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NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 1 TYPE OF QU...

NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 1 TYPE OF QUESTION:MCQ/MSQ Number ofquestions:15 Total marks: 15 X 1= 15 QUESTION 1: Which of the following are the enablers of IoT? a. RFID b. Nanotechnology c. Sensors d. All of the these Correct Answer: d. All of the these Detailed Solution:The enablers of IoT are – a. RFID b. Nanotechnology c. Sensors See lecture 1 (Introduction to IoT – Part - I) @ 12:41 QUESTION 2: Which of the following is/are NOT a characteristic of IoT? a. Efficient, scalable and associated architecture. b. Ambiguous naming and addressing. c. Abundance of sleeping nodes, mobile and non-IP devices. d. None of these Correct Answer: b.Ambiguous naming and addressing. Detailed Solution:The characteristics of IoT are – a. Efficient, scalable and associated architecture b. Unambiguous naming and addressing c. Abundance of sleeping nodes, mobile and non-IP devices  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur See lecture 1 (Introduction to IoT – Part - I) @ 16:02 QUESTION 3: State whether the following statement is True or False. Statement: The increasing number of devices in IoT is expected to result in an address crunch. a. True b. False Correct Answer: a. True Detailed Solution: The increasing number of devices in IoT is expected to result in an address crunch. See lecture 2 (Introduction to IoT – Part - II) @ 01:19 QUESTION 4: State whether the following statement is True or False. Statement: The gateway has a unique network prefix, which can be used to identify them globally. a. True b. False Correct Answer: a. True Detailed Solution: The gateway has a unique network prefix, which can be used to identify them globally. See lecture 2 (Introduction to IoT – Part - II) @ 6:58 QUESTION 5:  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Sometimes, when there is a need for the nodes to communicate directly to the Internet, ______________ can be used. a. Sensors b. Actuators c. Tunneling d. None of these Correct Answer: c. Tunneling Detailed Solution: Sometimes,there is a need for the nodes to communicate directly to the Internet. This is achieved by tunneling. See lecture 2 (Introduction to IoT – Part - II) @ 11:44 QUESTION 6: In _______________ a node/network is connected to multiple networks for improved reliability. a. Transparent roaming b. Multi-homing c. None of these d. Both (a) and (b) Correct Answer: b. Multi-homing Detailed Solution: In multi-homing, a node/network is connected to multiple networks for improved reliability. See lecture 2 (Introduction to IoT – Part - II) @ 15:22  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 7: The IPv6 notation uses ___________________ values. a. Roman b. Hexadecimal c. Both (a) and (b) d. None of these Correct Answer: b. Hexadecimal Detailed Solution: The IPv6 notation uses hexadecimal values. See lecture 2 (Introduction to IoT – Part - II) @ 16:33 QUESTION 8: A _____________ detects (senses) changes in the ambient conditions or in the state of another device or a system, and forwards or processes this information in a certain manner. a. Sensor b. Actuator c. Both (a) and (b) d. None of these Correct Answer: a. Sensor. Detailed Solution: A sensor detects (senses) changes in the ambient conditions or in the state of another device or a system, and forwards or processes this information in a certain manner.. See lecture3 (Sensing) @ 03:17 QUESTION 9:  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur A microphone is an example of an _____________. a. Input device and actuator b. Only actuator c. Only Transducer d. Input device and transducer Correct Answer: d. Input device and transducer Detailed Solution:A microphone is an example of an input device and transducer. See lecture 3 (Sensing) @ 10:31 QUESTION 10: The ________________ of a sensor is the smallest change it can detect in the quantity that it is measuring. a. Resolution b. Bias c. Noise d. None of these Correct Answer: a. Resolution Detailed Solution: The resolution of a sensor is the smallest change it can detect in the quantity that it is measuring.. See lecture 3 (Sensing) @ 12:33 QUESTION 11: Based on the data type, sensors are classified as _______________________. a. Scalar and Vector/Multimedia b. Only scalar c. Both (a) and (b) d. Only vector Correct Answer: a. Scalar and Vector/Multimedia Detailed Solution:Based on the data type, sensors are classified as Scalar and Vector/Multimedia. See lecture 3 (Sensing) @ 13:05  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 12: Solenoid valve is an example of ______________________. a. Sensor b. Actuator c. Processing unit d. None of these Correct Answer: b. Actuator Detailed Solution:Solenoid valve is an example of actuator. See lecture 4 (Actuation) @ 02:49 QUESTION 13: An actuator requires a ______________________ and ______________________. a. Control signal and a bias signal b. Control signal and a source of energy c. Noise signal and a source of energy d. None of these Correct Answer: b. Control signal and source of energy Detailed Solution: An actuator requires a control signal and source of energy. See lecture 4 (Actuation) @ 03:50 QUESTION 14:  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur State whether the following statement is True or False. Statement: Pneumatic rack and pinion actuators are used for valve controls of water pipes. a. True b. False Correct Answer: a. True Detailed Solution: Pneumatic rack and pinion actuators are used for valve controls of water pipes. See lecture 4 (Actuation)@ 07:52 QUESTION 15: Which of the following is NOT a function of an IoT gateway? a. Switching b. Routing c. Protocol conversion d. Generating noise Correct Answer: d. Generating noise Detailed Solution: Switching, routing, and protocol conversion are the functions of an IoT gateway. See lecture 5 (Basics of IoT Networking – Part - I) @ 19:27 ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 2 TYPE OF QUESTION: MCQ/MSQ Number of questions: 15 Total marks: 15 X 1= 15 QUESTION 1: The full form of MQTT is a. Message Queue Telemetry Transport b. Message Query Telemetry Transport c. Message Queue Telemedicine Transport d. None of these Correct Answer: a. Message Queue Telemetry Transport Detailed Solution: The full form of MQTT is Message Queue Telemetry Transport. See lecture 6 (Basics of IoT Networking – Part II) @ 01:51 QUESTION 2: In MQTT, a ________________ controls the publish-subscribe messaging pattern. a. Publishers b. Message Broker c. Subscribers d. All of these Correct Answer: b. Message Broker Detailed Solution: In MQTT, a message broker controls the publish-subscribe messaging pattern..  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur See lecture 6 (Basics of IoT Networking – Part II) @ 03:33 QUESTION 3: Which of the following is NOT a component of MQTT? a. Publishers b. Users c. Brokers d. None of these Correct Answer: b. Users Detailed Solution: The three components of MQTT are – a) Publishers b) Subscribers c) Brokers See lecture 6 (Basics of IoT Networking – Part II) @ 04:50 QUESTION 4: ______________ is an extension of MQTT which uses lightweight attribute based encryption. It has ___________ main stages. a. SMQTT, three b. BMQTT, three c. SMQTT, four d. None of these Correct Answer: c. SMQTT, four Detailed Solution: SMQTT is an extension of MQTT which uses lightweight attribute based encryption. It has four main stages. See lecture 6 (Basics of IoT Networking – Part II) @ 13:45  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 5: Which of the following is based on Request-Response model between end-points. a. MQTT b. CoAP c. Both (a) and (b) d. Neither (a) nor (b) Correct Answer: b. CoAP Detailed Solution: CoAP is based on Request-Response model between end-points. See lecture 7 (Basics of IoT Networking – Part III) @ 00:31 QUESTION 6: The two sub-layers of CoAP are - a. Messaging and Holding b. Messaging and Backoff c. Messaging and Teardown d. Messaging and Request/response Correct Answer: d. Messaging and Request/response Detailed Solution: CoAP has two sub-layers which are – a) Messaging b) Request/response  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur See lecture 7 (Basics of IoT Networking – Part III) @ 04:44 QUESTION 7: Which of the following is used for real-time exchange of structured data? a. MQTT b. SMQTT c. XMPP d. CoAP Correct Answer: c. XMPP Detailed Solution: XMPP is used for real-time exchange of structured data. See lecture 7 (Basics of IoT Networking – Part III) @ 11:28 QUESTION 8: XMPP uses the ________________ architecture. a. Publish-subscribe b. Client-server c. Both (a) and (b) d. Neither (a) nor (b) Correct Answer: b. Client-server Detailed Solution: XMPP uses the client-server architecture. See lecture 7 (Basics of IoT Networking – Part III) @ 12:03  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 9: With respect to AMQP, which of the following message delivery guarantees allow for each message to be delivered certainly as well as to be delivered multiple times. a. At-least-once b. At-most-once c. Exactly-once d. Both (a) and (b) Correct Answer: a. At-least-once Detailed Solution: The message delivery guarantees of AMQP are –  At-most-once – each message is delivered once or never.  At-least-once – each message is certain to be delivered, but may do so multiple times.  Exactly-once – message will always certainly arrive and do so only once. See lecture 8 (Basics of IoT Networking – Part IV) @ 05:35 QUESTION 10: Which of the following is/are NOT an AMQP frame type? a. Open b. Close c. End d. None of these Correct Answer: d. None of these Detailed Solution: Open, close, and end are valid frame types of the AMQP protocol. See lecture 8 (Basics of IoT Networking – Part IV) @ 06:34  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 11: Which of the following is/are NOT the function/functions of the Bindings component of the AMQP protocol? a. Receives messages and routes them to queues b. Separate queues for separate business process c. Consumer receive messages from queues d. All of these Correct Answer: d. All of these Detailed Solution: The Bindings component of the AMQP protocol manages the rules for distributing messages (who can access what messages, destination of the message) See lecture 8 (Basics of IoT Networking – Part IV) @ 08:05 QUESTION 12: Which of the following is/are NOT exchange types in AMQP? a. Direct b. Indirect c. Fan-out d. Topic Correct Answer: b. Indirect Detailed Solution: The AMQP exchange types are – a) Direct  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur b) Fan-out c) Topic d) Header See lecture 8 (Basics of IoT Networking – Part IV) @ 08:56 QUESTION 13: State whether the following statement is True or False. Statement: The IEEE 802.15.4 is a well-known standard for low data-rate Wireless Personal Area Network (WPAN). a. True b. False Correct Answer: a. True Detailed Solution: The IEEE 802.15.4 is a well-known standard for low data-rate Wireless Personal Area Network (WPAN). See lecture 9 (Connectivity Technologies – Part-I) @ 02:57 QUESTION 14: The networking topologies supported in the IEEE 802.15.4 are - a. Only Star b. Star and Mesh c. Only Mesh d. None of these  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Correct Answer: b. Star and Mesh Detailed Solution: The networking topologies defined in IEEE 802.15.4 are star and mesh. See lecture 9 (Connectivity Technologies – Part-I) @ 08:56 QUESTION 15: State whether the following statement is True or False. Statement: Periodic transmission of beacon messages does not occur in beacon enabled networks (IEEE 802.15.4). a. False b. True Correct Answer: a. False Detailed Solution: Periodic transmission of beacon messages occur in beacon enabled networks (IEEE 802.15.4). See lecture 9 (Connectivity Technologies – Part-I) @ 13:21 ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 3 TYPE OF QUESTION: MCQ/MSQ Number ofquestions:15 Total marks: 15 X 1= 15 QUESTION 1: State whether the following statement is true or false. Statement: Wired HART lacks a network layer. a. True b. False Correct Answer: a. True Detailed Solution:Wired HART lacks a network layer. See lecture 11 (Connectivity Technologies-III) @ 05:22 QUESTION 2: The HART physical layer is derived from ____________ protocol and operates only in __________ GHz ISM band. a. IEEE 802.15.4, 2.4 b. IEEE 802.15.4, 4.8 c. IEEE 802.16.5, 4.8 d. None of these Correct Answer: a. IEEE 802.15.4, 2.4 Detailed Solution:The HART physical layer is derived from IEEE 802.15.4 protocol and operates only in 2.4 GHz ISM band. See lecture 11 (Connectivity Technologies-III) @ 05:43  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 3: State whether the following statement is True or False Statement: Super-frames in HART consist of grouped 20ms wide timeslots. a. True b. False Correct Answer: b. False Detailed Solution:Super-frames in HART consist of grouped 10ms wide timeslots. See lecture 11 (Connectivity Technologies-III) @ 07:05 QUESTION 4: _________________ identifies channels consistently affected by interference and removes themfrom use. a. Channel hopping b. Channel aggregating c. Channel blacklisting d. Frequency aggregating Correct Answer: c. Channel Blacklisting Detailed Solution:Channel Blacklisting identifies channels consistently affected by interference and removes them from use. See lecture 11 (Connectivity Technologies-III) @ 07:30 QUESTION 5: The _________________ supervises each node in the network and guides them on when and where to send packets. a. Application manager b. Network manager c. Trust manager d. None of these Correct Answer: b. Network manager Detailed Solution: The Network manager supervises each node in the network and guides them on when and where to send packets.. See lecture 11 (Connectivity Technologies-III) @ 12:14  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 6: NFC is designed for use by devices within _________ to each other? a. Close proximity b. No near contact c. Both (a) and (b) d. None of these Correct Answer: a. Close proximity Detailed Solution: NFC is designed for use by devices within close proximity to each other. See lecture 11 (Connectivity Technologies-III) @ 17:43 QUESTION 7: ______________ contain information which is readable by other devices, however it cannot read information itself. a. Active NFC devices b. Dumb NFC devices c. Passive NFC devices d. None of these Correct Answer: c. Passive NFC devices Detailed Solution: Passive NFC devices contain information which is readable by other devices, however it cannot read information itself. See lecture 11 (Connectivity Technologies-III) @ 18:33 QUESTION 8: NFC devices work on the principle of ___________________? a. Magnetic introduction b. Magnetic induction c. Both (a) and (b) d. None of these Correct Answer: b. Magnetic induction Detailed Solution: NFC devices work on the principle of magnetic induction. See lecture 11 (Connectivity Technologies-III) @ 20:00  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 9: Which of these is NOT a mode of operation NFC? a. Server-to-Server b. Peer-to-Peer c. Read/Write d. Card emulation Correct Answer: a. Server-to-server Detailed Solution: There are primarily three modes of operation in NFC as – a. Peer-to-peer b. Read/Write c. Card emulation See lecture 11 (Connectivity Technologies-III) @ 23:00 QUESTION 10: State whether the following statement is true or false Statement: Paging in Bluetooth is the process of forming a connection between two Bluetooth devices. a. True b. False Correct Answer: a. True Detailed Solution: Paging in Bluetooth is the process of forming a connection between two Bluetooth devices. See lecture 12 (Connectivity Technologies-IV) @ 05:32  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 11: There are ______ modes of operation in Bluetooth. a. 3 b. 4 c. 5 d. None of these Correct Answer: b. 4 Detailed Solution: There are 4 modes of operation in Bluetooth. See lecture 12 (Connectivity Technologies-IV) @ 06:48 QUESTION 12: Zwave uses __________ for signaling and control? a. Light b. RF c. Sound d. None of these Correct Answer: b. RF Detailed Solution: Zwave uses RF for signaling and control. See lecture 13 (Connectivity Technologies-V) @ 2:40 QUESTION 13: Which of the following is/are not a constraint on sensor nodes? a. Must consume high power b. Not be adaptive to the environment c. Both (a) and (b) d. None of these Correct Answer: c. Both (a) and (b) Detailed Solution: Sensor nodes - a. Must consume extremely low power b. Be adaptive to the environment See lecture 14 (Sensor Networks-I) @ 14:35  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 14: ___________ are simply those that are unable to perform an operation; this could be because of power failure and environmental events. a. Normal nodes b. Failed nodes c. Badly failed nodes d. None of these Correct Answer: b. Failed nodes Detailed Solution: Failed nodes are simply those that are unable to perform an operation; this could be because of power failure and environmental events. See lecture 15 (Sensor Networks-II) @ 03:52 QUESTION 15: Dumb behavior of sensor nodes is _______________ in nature (as it is dependent on the effects of the environmental conditions). a. Temporal b. Spatial c. Both (a) and (b) d. None of these Correct Answer: a. Temporal Detailed Solution: Dumb behavior of sensor nodes is Temporal in nature (as it is dependent on the effects of the environmental conditions). See lecture 15 (Sensor Networks-II) @05:40 ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 4 TYPE OF QUESTION: MCQ/MSQ Number of questions: 15 Total marks: 15 X 1= 15 QUESTION 1: State whether the following statement is true or false. Statement: Coverage in WSN is defined as the area-of-interest is covered satisfactorily. a. True b. False Correct Answer: a. True Detailed Solution: Coverage in WSN is defined as the area-of-interest is covered satisfactorily. See lecture 17 (Sensor Networks-IV) @ 01:44 QUESTION 2: If transmission range >= 2* sensing range, a. Coverage implies greater coverage b. Coverage implies connectivity c. Both (a) and (b) d. None of these Correct Answer: b. Coverage implies connectivity Detailed Solution: If transmission range >= 2* sensing range, coverage implies connectivity. See lecture 17 (Sensor Networks-IV) @ 04:14 QUESTION 3: The two types of reporting in WSN are - a. Event driven and machine driven b. Event driven and weather driven  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur c. Event driven and on demand d. None of these Correct Answer: c. Event driven and on demand Detailed Solution: The two types of reporting in WSN are Event driven and on demand See lecture 17 (Sensor Networks-IV) @ 08:09 QUESTION 4: The objective of coverage in WSN is to use a _______________ number of sensors and _______________ the network lifetime. a. minimum, minimize b. minimum, maximize c. maximum, minimize, d. maximum, maximize Correct Answer: b. minimum, maximize Detailed Solution: The objective of coverage in WSN is to use minimum number of sensors and maximize the network lifetime. See lecture 17 (Sensor Networks-IV) @ 08:47 QUESTION 5: State true or false. The disadvantages of stationary Wireless Sensor Networks are - Statement-I: Node failure may result in partition of networks. Statement-II: Topology cannot change automatically. a. Statement-I True, Statement-II False b. Both Statements are False c. Both Statements are True d. None of these Correct Answer: c. Both Statements are True Detailed Solution: The disadvantages of stationary Wireless Sensor Networks are – a. Node failure may result in partition of networks.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur b. Topology cannot change automatically. See lecture 18 (Sensor Networks-V) @ 1:11 QUESTION 6: A _________________ in MWSN moves in order to collect data from sensor nodes and goes to the sink and delivers the collected data from different sensor nodes. a. Drop b. Molecule c. Mule d. None of these Correct Answer: c. Mule Detailed Solution: A mule in MWSN moves in order to collect data from sensor nodes and goes to the sink and delivers the collected data from different sensor nodes. See lecture 18 (Sensor Networks-V) @ 07:12 QUESTION 7: ________________ allows distributed sensing carried by humans and the goal is not just to collect data but to allow the common people to assess and share the knowledge. a. Voluntary sensing b. Compressive sensing c. Dynamic sensing d. Participatory sensing Correct Answer: d. Participatory sensing Detailed Solution: Participatory sensing allows distributed sensing carried by humans and the goal is not just to collect data but to allow the common people to assess and share the knowledge. See lecture 18 (Sensor Networks-V) @ 13:01 QUESTION 8: Which of the following is/are NOT feature/features of UAV networks? a. Mesh or star networks b. Multi-tasking c. Large coverage area  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur d. None of these Correct Answer: d. None of these Detailed Solution: The following are the features of UAV networks - a. Mesh or star networks b. Multi-tasking c. Large coverage area See lecture 19 (UAV Networks) @ 02:43 QUESTION 9: Which of the following is NOT a UAV network constraint? a. Frequent link breakages b. Prone to malfunction c. Very Complex d. None of these Correct Answer: d. None of these Detailed Solution: The following are UAV network constraints - a. Frequent link breakages b. Prone to malfunction c. Very Complex See lecture 19 (UAV Networks) @ 09:32 QUESTION 10: In _____________________ configuration, UAVs form multiple star topology. One node from each group connects to the ground station. a. Multi-star b. Ring c. Both (a) and (b) d. None of these Correct Answer: a. Multi-star Detailed Solution: In multi-star configuration, UAVs form multiple star topology. One node from each group connects to the ground station. See lecture 19 (UAV Networks) @ 12:03  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 11: The full form of FANET is? a. Flying Ad Hoc Network b. Fast Ad Hoc Network c. Fidelity Ad Hoc Network d. None of these Correct Answer: a. Flying Ad Hoc Network Detailed Solution: The full form of FANET is Flying Ad Hoc Network. See lecture 19 (UAV Networks) @ 14:11 QUESTION 12: Low-end sensor nodes are - a. Whose deployment has high density in order to increase network lifetime and survivability. b. Who perform basic functions such as data aggregation, auto configuration, and power saving. c. Both (a) and (b) d. None of these Correct Answer: c. Both (a) and (b) Detailed Solution: Low-end sensor nodes are - a. Whose deployment has high density in order to increase network lifetime and survivability. b. Who perform basic functions such as data aggregation, auto configuration, and power saving. See lecture 20 (Machine to Machine Communication) @ 10:46 QUESTION 13: Which of the following are the components of the M2M ecosystem? a. Trees b. Ocean c. Device Providers d. Non-service users Correct Answer: c. Device Providers  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Detailed Solution: The components of the M2M ecosystem are as follows – a. Device Providers b. Internet Service Providers (ISPs) c. Platform Providers d. Service Providers e. Service Users See lecture 20 (Machine to Machine Communication) @ 13:00 QUESTION 14: State whether the following statement is true or false Statement: The M2M Device Platform enables access to objects connected to the Internet anywhere any time. a. True b. False Correct Answer: a. True Detailed Solution: The M2M Device Platform enables access to objects connected to the Internet anywhere any time. See lecture 20 (Machine to Machine Communication) @ 16:47 QUESTION 15: State whether the following statement is true or false Statement: The M2M Application Platform provides integrated services based on device collected data-sets. a. True b. False Correct Answer: a. True Detailed Solution: The M2M Application Platform provides integrated services based on device collected data-sets. See lecture 20 (Machine to Machine Communication) @ 17:53 ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 5 TYPE OF QUESTION: MCQ/MSQ Number of questions: 15 Total marks: 15 X 1= 15 QUESTION 1: Company ABC manufactures a room temperature monitor which sends data via protocol X and company MNO manufactures another kind of room temperature sensor which sends data via protocol Y. With respect to this, which among the following correctly captures the said scenario? a. Homogeneity of IoT b. Heterogeneity of IoT Correct Answer: b. Heterogeneity of IoT Detailed Solution: IoT is characterized by heterogeneity where different kinds of devices, each communicating with different set of protocols are designed. Refer first part of Lecture 21.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 2: When two IoT devices wish to communicate, semantic conflict in such a scenario in IoT interoperability refers to____________________. a. Two devices built by the same manufacturer b. Two devices sensing the same physical parameter c. Two devices having different deployment location d. Two devices having different processing and business logic Correct Answer: d. Two devices having different processing and business logic Detailed Solution: Semantic conflict refers to when different IoT devices have different processing and business execution logic. Refer Lecture 21@5:32 QUESTION 3: Which of the following issues needs to be addressed while solving user interoperability? a. Device characterization and identification b. Syntactic interoperability c. Semantic interoperability d. All of these Correct Answer: d. All of these Detailed Solution:All of the options given should be addressed while solving user interoperability issues. Refer Lecture 21@15:16.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 4: Which UMB interoperability component is responsible for converting physical devices into virtually abstracted ones? a. UMB Adaptor b. UMB Core c. UMB Hypervisor d. UMB Abstractor Correct Answer: a. UMB Adaptor Detailed Solution: UMB-A is responsible for converting physical devices into virtually abstracted ones. (Please refer Lecture 21@27:16) QUESTION 5: A Protocol Translation Unit (PTU) acts as a middleware between two IoT devices with different native protocols to enable them communicate with each other by translating the language of one device to the other one and vice versa. a. True b. False Correct Answer: a. True Detailed Solution: Refer Lecture 21@22:16 and onwards where PTU has been explained.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 6: Suppose that a smart CCTV camera has been configured using C++ language. With respect to the device’s cosign identification as per the standard definition (A,B,C,D), which among the following the information “Configuration Lang:C++” will be most appropriately mapped ? a. A b. B c. C d. D Correct Answer: d. D Detailed Solution:For a device’s cosign (A,B,C,D), ‘D’ refers to the definition of the object, hence is the most appropriate to which configuration language, which may be considered a definition will be mapped. Refer Lecture 21@21:16. QUESTION 7: Which among the following are components of an Arduino UNO Board? a. LED Power Indicator b. Digital I/O Pins c. Analog IN Pins d. All of these Correct Answer: d. All of these  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Detailed Solution: An Arduino UNO board contains several components, which also contain the ones listed above. Refer Lecture 22 on Arduino Board details. QUESTION 8: What is the series of micro controller chips powering Arduino UNO boards? a. ATM series b. X86 series c. ARM 64 series d. ATMEGA series Correct Answer: d. ATMEGA series Detailed Solution:Arduino UNO micro controllers are powered by ATMEGA series. Refer to any standard documentation on Arduino UNO. QUESTION 9: In Arduino IDE the ‘Verify’ and ‘Upload’ buttons perform the exact same task. a. False b. True Correct Answer: a. False Detailed Solution: In Arduino IDE, ‘Verify’ compiles the sketch and checks for its correctness, while ‘Upload’ uploads the sketch to the Arduino board. Refer Lecture 22@13:22  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 10: Suppose that an Arduino UNO board is connected to a pneumatic sensor which sends tyre pressure as floating point numbers. Which among the functions will you use to read from the sensor? a. digitalRead() b. analogWrite() c. analogRead() d. None of these Correct Answer: c. analogRead() Detailed Solution: As per the basics of Arduino programming. When you have real numbers in analog format, you use analogRead(). Refer Lecture 22.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 11: Consider the following Arduino sketch. What must be inserted in the place of ‘??’ within the second pinMode() function in void setup()? a. INPUT b. OUTPUT c. None of these d. Anyone of these is okay Correct Answer: b. OUTPUT Detailed Solution: Since pin ‘g’ is writing digital values, it is required to set in OUTPUT mode. Refer  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Lecture 22-23. QUESTION 12: For integrating different types of sensors (such as DHT) with Arduino, you would need to install and #include the sensor specific libraries in your sketch. a. True b. False Correct Answer: a. True Detailed Solution:Each different type of sensor has its specific libraries and functions which must be included with the Arduino sketch. Refer Lecture 24. QUESTION 13: Which of the following best describes the command given below? ServoDemo.write(180); a. Creates an instance of the servo b. Pin writes 180 to the servo c. Servo moves 180 degrees d. All of these Correct Answer: c. Servo moves 180 degrees Detailed Solution: As per the basics of Arduino libraries. See lecture 25 @ 08:15  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 14: In an Arduino sketch, for the default function void setup(), which of the following is true? a. Point where the code terminates. b. Point where the code starts. c. It iterates over the different tasks in the program. d. None of the above. Correct Answer: b. Point where code starts. Detailed Solution: As per the basics of Arduino programming.See lecture 22@13:52 QUESTION 15: Which among the following can also be described as a relay, which is an actuator? a. Pneumatic actuator b. Motor type actuator c. Electro-mechanical switch d. Thermal switch Correct Answer: c. Electro-mechanical switch Detailed Solution: Relay is a type of electro-mechanical switch and is also an actuator. Refer Lecture 25@3:57 ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 6 TYPE OF QUESTION: MCQ/MSQ Number of questions: 15 Total marks: 15 X 1= 15 QUESTION 1: Python doesn’t support strict rules for syntax and static variable declaration like C a. True b. False Correct Answer: a. True Detailed Solution: As per Python program. (Please refer to lecture INTRODUCTION TO PYTHON PROGRAMMING- I @ 4:23) QUESTION 2: Fill in the blanks. is a data-type in Python. a. List b. Tuple c. Dictionary d. All of these Correct Answer: d. All of these Detailed Solution: As per Python program. (Please refer to lecture INTRODUCTION TO PYTHON PROGRAMMING- I @ 15:18) QUESTION 3: Fill in the blanks. are the variables declared inside a function. a. Immediate variables b. Global variables c. Local variables  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur d. None of these Correct Answer: c. Local variables Detailed Solution: As per Python program (Please refer to lecture INTRODUCTION TO PYTHON PROGRAMMING- I @ 25:41). QUESTION 4: What does the open() function return for file operations? a. File mode b. File object c. File name d. None of these Correct Answer: b. File object Detailed Solution: As per the basics of Python programming. (Please refer to lecture INTRODUCTION TO PYTHON PROGRAMMING- II @ 3:00) QUESTION 5: Python does not follow rigid indentation. a. True b. False Correct Answer: b. False Detailed Solution: As per the basics of Python programming. (Please refer to lecture INTRODUCTION TO PYTHON PROGRAMMING- I @ 8:18) QUESTION 6: Which of the following is used to display an image in Python? a. image.show() b. image.open() c. image.name() d. image.mode() Correct Answer: a. image.show() Detailed Solution: As per the basics of Python programming. (Please refer to lecture INTRODUCTION TO PYTHON PROGRAMMING- II @ 18.26 )  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 7: Which of the following models does python follow for networking. a. Client-server b. P2P c. All of these d. None of these Correct Answer: a. Client-server Detailed Solution: In python programming, python provides network services for client- server models. (Please refer to lecture INTRODUCTION TO PYTHON PROGRAMMING- II @ 23:29 ) QUESTION 8: In python, ”with” ensures the file is closed after the operation is completed, but not when an exception occurs. a. True b. False Correct Answer: b. False Detailed Solution: As per the basics of Python programming (Please refer to lecture INTRODUCTION TO PYTHON PROGRAMMING- II @4:58). QUESTION 9: In Raspberry Pi, GPIO acts only as a digital output. a. True b. False Correct Answer: b. False Detailed Solution: Raspberry Pi GPIO acts as both digital output and digital input. (Please refer to lecture 28@10:14).  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 10: Which of the following exits the nano editor in the terminal? a. Ctrl+O b. Ctrl+X c. Ctrl+A d. None of these Correct Answer: b. Ctrl+X Detailed Solution: Ctrl+X exists the editor. See lecture 29 @ 10:25 QUESTION 11: Does Raspberry Pi provide configuration options for cameras ? a. Yes b. No Correct Answer: a. Yes Detailed Solution: Raspberry Camera can be configured using raspi-config. See lecture 29 @ 19:04 QUESTION 12: Does python provide a module for pi-camera ? a. Yes b. No Correct Answer: a. Yes Detailed Solution: Raspberry Camera can be configured using the Python camera module python-picamera. See lecture 29 @ 19:59. QUESTION 13: Which of the following converts energy to motion? a. Actuator b. Raspberry Pi c. All of these d. None of these  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Correct Answer: a. Actuator Detailed Solution: Actuator converts energy to motion. See lecture 30 @ 03:37 QUESTION 14: Which of the following is a property of a Relay. a. Mechanical switch b. Electrochemical switch c. None of these d. All of these Correct Answer: a. Mechanical switch Detailed Solution: Relay is a mechanical switch. (Please refer to lecture 30@ 6:20) QUESTION 15: Sensors can be neither analog nor digital. a. True b. False Correct Answer: b. False Detailed Solution: Sensors can be analog or digital. (Please refer to lecture 30 @ 3:20) ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 7 TYPE OF QUESTION: MCQ/MSQ Number of questions: 15 Total marks: 15 X 1= 15 QUESTION 1: Raspberry Pi is like a mini computer which can perform a wide range of general purpose tasks. a. True b. False Correct Answer: a. True Detailed Solution: Raspberry Pi devices act just like mini computers and can be configured to perform many things. Refer to the lectures on Raspberry Pi QUESTION 2: What is the complete form of GPIO pins on Raspberry Pi devices. a. General Public Input/Output b. Generative Purpose Input/Output c. General Purpose Input/Output d. Global Purpose Input/Output Correct Answer: c. General Purpose Input/Output  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Detailed Solution: GPIO stands for General Purpose Input/Output. Refer to any standard documentation on Raspberry Pi. Also visit (https://projects.raspberrypi.org/en/projects/physical-computing/1) QUESTION 3: The Python program which you execute on Raspberry Pi to read data from sensors and control actuators has the same syntax and style as any other Python program. a. False b. True Correct Answer: b. True Detailed Solution It does not matter for what a Python program is written, all Python programs follow the same syntax and style. QUESTION 4: During remote server access by a Raspberry Pi, where the Raspberry Pi acts as a client, the client needs the following? a. Only IP address of server b. Only port number c. Both server IP address and port number d. Client’s IP address Correct Answer: c. Both server IP address and port number Detailed Solution: A client can communicate with a server only if both IP address and port numbers are known. (Please refer Lecture 31@14:13)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 5: Which among the following are valid data processing activities a. Data Splitting b. Data filtering c. Data plotting d. All of the given Correct Answer: d. All of the given Detailed Solution: As per the basics of Python programming (Please refer to lecture INTRODUCTION TO PYTHON PROGRAMMING- II @19:44).  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 6: Consider the following Python code snippet. Assume the syntax is correct and all required libraries are imported var = ‘Sensor@Actuator%Arduino’ pt = var.split(‘%’) print(pt) What will be the output (See every detail, including the apostrophes carefully)? a. [‘Sensor’,’Actuator’,’Arduino’] b. [‘Sensor@Actuator’,’Arduino’] c. [‘Sensor’,’Actuator%Arduino’] d. [‘Sensor@Actuator%Arduino’] Correct Answer: b. [‘Sensor@Actuator’,’Arduino’] Detailed Solution: As per Python programming directives and the working of the split function(). Refer Python documentation and Lecture 32@26:00  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 7: Which among the following functions do you use while using MATPLOTLIB to add title to a plot? a. plot() b. add() c. label() d. title() Correct Answer: d. title() Detailed Solution: The title() functions adds title to a plot while using matplotlib. Refer Lecture 32@12:00 QUESTION 8: In traditional non software-defined network consisting of a network of switches, suppose OSPF is being used as the routing protocol. In this context which among the following is true. a. All the switches execute OSPF distributively b. Only one switch executes OSPF c. No switch executes OSPF d. All of these are true Correct Answer: a. All the switches execute OSPF distributively Detailed Solution: Traditional networks are distributive, hence all the switches of the network execute OSPF. Refer Lecture 33 from 3:50 onwards.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 9: In SDN, the Operating System (OS) is separated (i.e not strongly coupled) from the physical hardware for each switch. a. True b. False Correct Answer: a. True Detailed Solution: SDN separates the physical and logical plane of the switch. So OS (part of logical plane) is separated from the hardware (part of the physical plane) for each switch. Refer Lecture 33 from 9:20 onwards. QUESTION 10: Which among the following is a popular protocol implementing SDN? a. OpenSwitch b. OpenStack c. OpenFlow d. OpenEdge Correct Answer: c. OpenFlow Detailed Solution: OpenFlow by ONF is the most popular protocol implementing the principles of SDN. Refer to any standard documentation on OpwnFlow.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 11: With respect to Software Defined Networking (SDN), which among the following is true? a. SDN couples the data plane and control plane. b. SDN has no relation to either data plane or control plane c. SDN separates the data plane and control plane. d. None of the stated. Correct Answer: c. SDN separates the data plane and control plane Detailed Solution: SDN separates the data plane and control plane. It is the fundamental principle of SDN. Refer Lecture 33 from 12:17 onwards, SDN Architecture.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 12: Consider the following figure below. To which issue of SDN does this particular figure can be related to? a. Controller placement issue b. Flow Rule placement issue c. Hardware placement issue d. Analysis placement issue Correct Answer: b. Flow Rule placement issue Detailed Solution: The given figures shows the tabular structure of how flow rules are installed within SDN switches, so it pertains to flow rule placement issues. Refer Lecture 33@18:54, Rule Placement. QUESTION 13: Suppose that there are two LANs, each configured to be SDN enabled with their own set of switches and controller. Which among the following directional APIs will be used for communication between the two controllers? a. Northbound API b. East-Westbound API c. Southbound API d. Northeastbound API  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Correct Answer: b. East-Westbound API Detailed Solution: East-Westbound APIs are responsible for communication between different SDN controllers and domains. Refer Lecture 34, APIs in SDN QUESTION 14: Which among the following is true? a. Backup Controllers have no use is SDN b. There is no difference between the main controller and backup controller c. Backup controllers take over when the main controller goes down d. It is not a good idea to keep backup controllers. Correct Answer: c. Backup controllers take over when the main controller goes down Detailed Solution: Backup Controllers are required to take over the network control when the main controller fails. Refer Lecture 34@8:24 QUESTION 15: IoT being data intensive and having a lot of security concerns, it is a good idea to integrate SDN with IoT to mitigate many of these issues. a. True b. False Correct Answer: a. True  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Detailed Solution: SDN can be integrated with IoT to reap several benefits of both. Refer Lecture 35. ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 8 TYPE OF QUESTION: MCQ/MSQ Number of questions: 15 Total marks: 15 X 1= 15 QUESTION 1: Traditional Wireless Mobile Networks are cost expensive in terms of _____________? a. Only CAPEX b. Only OPEX c. Both CAPEX and OPEX d. Neither CAPEX and OPEX Correct Answer: c. Both CAPEX and OPEX Detailed Solution: Traditional wireless mobile networks are cost expensive both with respect to capital expenditure (CAPEX) and Operational Expenditure (OPEX). Refer Lecture 36@2:45 QUESTION 2: High mobility of users is one of the key challenges in rule placement for software defined wireless mobile networks. a. True b. False  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Correct Answer: a. True Detailed Solution: Dynamic user mobility restricts the ease with which rules can be placed for software defined wireless mobile networks. Refer Lecture 36@8:43 QUESTION 3: Which among the following is a solution for mobility-aware flow rule placement in SDIoT? a. Mobility-Flow b. Mobile-Flow c. Mobi-Flow d. M-Flow Correct Answer: c. Mobi-Flow Detailed Answer: Mobi-Flow has been proposed to provide a solution for mobility-aware flow rule placement. Refer Lecture 36@13:09 onwards QUESTION 4: Cloud, Utility, Grid and ______________________ have been the major trends in computing a. Clone b. Cluster c. Closure d. Cloud Correct Answer: b. Cluster Detailed Answer: Cloud, Utility, Grid and Cluster computing are some of the major trends in computing. Please refer Lecture 37@5:43 onwards  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 5: Cloud computing models allow different users to share the same physical resources? a. True b. False Correct Answer: a. True Detailed Solution: Cloud computing uses virtualization heavily and thus it allows different users to share the same underlying physical infrastructure. QUESTION 6: As per NIST Visual Model of Cloud Computing, ‘Hybrid Cloud’ model and PaaS model both fall in the same category. a. True b. False Correct Answer: b. False Detailed Solution: ‘Hybrid Cloud’ is an example of cloud deployment model while ‘PaaS’ is an example of cloud service model. Refer Lecture 37@13:28  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 7: When you are accessing Google docs or Microsoft Word online for accessing the features of a document writing software from your browser without specifically installing them, which among the following cloud service models is the most appropriate one that you are using. a. SaaS b. PaaS c. IaaS d. DaaS Correct Answer: a. SaaS Detailed Solution: This is an example of SaaS, since you are accessing a word/document processing software as a client over the network. The actual software itself runs on some remote cloud server (Please refer Lecture 37@26:14 AND 38@13:16) QUESTION 8: An organization A wants to deploy a cloud infrastructure, whereby it wants to push majority of the data to a cloud whose servers can be situated anywhere within the globe, but it wants certain private data to be pushed only to cloud servers that are present on-premise and are accessible by only authenticated members of the organization. In this context which among the following deployment model should be used? a. Private Cloud b. Public Cloud c. Hybrid Cloud d. Any of these Correct Answer: c. Hybrid Cloud Detailed Solution: Hybrid cloud deployment model supports both the features of public and private cloud. Refer lecture 37, ppt No. 18.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 9: Cloud services and resources should be rapidly ______________ in order to achieve their required performance a. entrusted b. elastic c. enterprise d. None of the given Correct Answer: b. elastic Detailed Answer: Rapid elasticity is one of the key requirements for cloud computing paradigms and models. Refer Lecture 37@20:54 QUESTION 10: Suppose that a start-up wants to enter into online book delivery business. It wants to create the user interface and the application by itself, but it does not have any networking or storage facility, so it wants to adopt the cloud computing practice. In this respect, which among the following cloud service models is most suitable for the start-up. a. Only SaaS b. Neither PaaS nor IaaS c. Both PaaS and IaaS can be adopted d. Neither SaaS, PaaS or IaaS Correct Answer: c. Both PaaS and IaaS can be adopted Detailed Answer: Since both IaaS and PaaS provides infrastructure and storage support to clients, either of PaaS or IaaS can be employed. Refer Lecture 38@3:00, comparision of different models.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 11: Data security and client authentication is an issue in which of the following cloud service models? a. SaaS b. SaaS and PaaS c. IaaS d. All of them Correct Answer: d. All of them Detailed Solution: Security is a pertinent issue in all of the cloud service models, which includes SaaS, PaaS and IaaS. Refer to any standard discussion on challenges and issues on cloud computing and Lecture 39. QUESTION 12: Network, ___________________ and application level securities are the three aspects of cloud infrastructure securities. a. Client b. Web c. Host d. Wireless Correct Answer: c. Host Detailed Solution: Network, host and application level securities are the fundamental aspects of cloud infrastructure securities. Refer Lecture 39@16:42.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 13: When a new user logs into a cloud framework, the first thing that needs to be done is ______________________________. a. User should be authenticated b. User should immediately be granted all the resources c. User should log off d. User should be penalized Correct Answer: a. User should be authenticated Detailed Solution: User authentication is one of the primary security issue and any user which logs into the cloud framework must first be authenticated. Refer Lecture 39@26:53. QUESTION 14: Service Level Agreements (SLAs) are mutually agreed by the client (customer) and cloud service provider (CSP) at the beginning. With respect to SLAs, what are the views that SLAs provide? a. Customer Point of View b. CSP Point of View c. Both Customer and CSP Point of View d. Neither Customer nor CSP Point of View Correct Answer: c. Both Customer and CSP Point of View Detailed Solution: SLAs provide both the customer point of view and the CSP point of view between the customer and the CSP. Refer Chapter 10 (Page 245) of “Introduction to IoT” by Sudip Misra, Anandarup Mukherjee, Arijit Roy, Cambridge University Press.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 15: CloudAnalyst simulation tool provides GUI and is written on top of CloudSim modules. a. Yes b. No Correct Answer: a. Yes Detailed Solution: CloudAnalyst is built on top of CloudSim and also provides a GUI. Refer Lecture 40@12:02 onwards. ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 9 TYPE OF QUESTION:MCQ/MSQ Number of questions: 15 Total marks: 15 X 1= 15 QUESTION 1: Which component of OpenStack do you use to access all the other components? a. Horizon b. Glance c. Neutron d. None of these Correct Answer: a. Horizon Detailed Solution: Horizon is the dashboard of OpenStack which provides the GUI and from where you can access other components. Please refer Lecture 41@3:54  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 2: Which among the following is NOT a component of OpenStack? a. Horizon b. Heat c. Plasma d. Neutron Correct Answer: c. Plasma Detailed Solution: Plasma is not a component of OpenStack. The rest are various components, including Nova, Glance, Swift etc. Refer lecture 41, ppt No. 4 QUESTION 3: Sensor cloud is simply dumping and organizing of sensor data on cloud computing platforms. a. True b. False Correct Answer: b. False Detailed Solution: Sensor cloud incorporates many aspects and not simply dumping of senor data over cloud platforms. Refer Lecture 42@3:45 onwards  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 4: Which among the following are limitations of traditional Wireless Sensor Networks (WSNs)? a. Procurement Issues b. Deployment Issues c. Maintenance Issues d. All of the given Correct Answer: d. All of the given Detailed Solution: For traditional WSNs, procurement, deployment and maintenance are all critical issues that needs to be taken care of. Refer Lecture 42@9:49 onwards. QUESTION 5: In a typical sensor cloud architecture, the sensor cloud infrastructure that provides the virtualization lies ______________________________ a. At the same layer as physical sensor devices b. At the application layer c. In between the physical sensor layer and the application layer d. Sensor cloud does not support virtualization Correct Answer: c. In between the physical sensor layer and the application layer Detailed Answer: In a typical sensor cloud architecture, the sensor cloud infrastructure that provides the virtualization lies in between the physical sensor layer and the application layer. Refer Lecture 42@12:00 onwards.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 6: Generally speaking, Sensor Cloud Service Providers (SCSPs) are also always the owners of the physical sensors a. Yes b. No Correct Answer: b. No Detailed Solution: SCSPs are providers of the virtualized sensor services, but they may not the owners of the physical sensors in a typical deployment. Refer Lecture 42, ‘Actors in Sensor-cloud’. QUESTION 7: In a typical sensor cloud architecture with virtualization, one virtual sensor can be associated with how many physical sensors? a. Only one b. One or more than one c. None d. Only two Correct Answer: b. One or more than one Detailed Solution: One instance of a virtual sensor in sensor cloud architecture can be mapped with one, two or more physical sensors below. Refer Lecture 43, Optimal composition of virtual sensors  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 8: Sensor virtualization aims to achieve more _________________________ in providing sensor based services a. Complexity b. Flexibility Correct Answer: b. Flexibility Detailed Solution: Sensor virtualization and sensor cloud architecture are designed to provide more flexibility and convenience than traditional sensor based services. Refer to the lectures on Sensor Cloud and its motivation closely. QUESTION 9: Suppose that you want to start a business to provide some IoT based application, but you do not have the means to develop the application layer logic, neither you have the means to purchase and deploy physical sensors. You can however, rent cloud servers for use and write interface logic for interfacing with other modules. Which among the following actors will be the most suitable for you? a. Physical sensor owner b. Application layer developer c. Sensor Cloud Service Provider (SCSP) d. You cannot start the business Correct Answer: c. Sensor Cloud Service Provider (SCSP) Detailed Answer: SCSPs provide the sensor virtualization layer in between the application layer and the physical sensor layer and thus this is the best business model as per the requirements and constraints given. Refer to the standard architecture of sensor cloud and utility of SCSPs.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 10: Which among the following is implemented along with sensor cloud to make its services and performance better? a. Cashing b. Caching c. Casing d. Calling Correct Answer: b. Caching Detailed Solution: Caching is very important in sensor cloud and is implemented along with sensor cloud to make the performances better. Refer Lecture 43@17:38 onwards. QUESTION 11: Which among the following cases is most likely to reduce the overall price of sensor-cloud implementation provided that the data traverses through multiple sensor hops starting from the origin sensor to the sink node, and provided that all owners are honest and charge for only what is required? a. If physical sensors are owned by multiple owners with high profit margin b. If all physical sensors are owned by a single owner with uniform profit margin Correct Answer: b. If all physical sensors are owned by a single owner with uniform profit margin Detailed Solution: If all the physical sensors are owned by a single owner, then the single owner will charge an uniform price for data traversing through the sensors. On the other hand, if multiple sensor owners are there, different owners will charge different rates, which may increase the price. Refer pricing in sensor-cloud, Lecture 43@25:40 onwards.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 12: Fog computing is aimed to replace cloud computing completely and has no scope for integration with cloud a. True b. False Correct Answer: b. False Detailed Solution: Fog computing is designed to assist and compliment cloud based technologies in providing better services, not remove cloud all together. Refer Lecture 44@3:46 onwards, Introduction to Fog, especially how it is connected to cloud computing. QUESTION 13: Suppose data from an IoT device first goes to Fog layer for some basic processing, after which it goes to Cloud layer for advanced processing, then the processed data comes back to the Fog layer and then, it finally comes back to the origin sensor node. In the return journey no processing of data takes place anywhere, just transfer of data takes place. If ‘Tf’ is the time taken by the data to travel from sensor to fog and vice versa, and ‘Tc’ is the time taken by the data to travel from fog to cloud and vice versa, ‘Tfp’ is the data processing time at fog and ‘Tcp’ is the data processing time at cloud, what is the total round trip time ‘T’ taken by data starting from the origin sensor node, processing the data and then back to the sensor node after being processed. a. T = Tf + Tc + Tfp + Tcp b. b. T = Tf + Tc c. T = 2(Tf + Tc) + Tfp + Tcp d. T = 4(Tf + Tc + Tfp + Tcp) Correct Answer: c. T = 2(Tf + Tc) + Tfp + Tcp Detailed Solution: Since data comes back to the origin sensor node, the traversal latency Tf and Tc will be counted twice. But, since processing takes place only once during onward journey, processing delay is only one time. Therefore, T = 2(Tf + Tc) + Tfp + Tcp. Refer to the lecture on cloud latency, Lecture 44@14:28 onwards.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 14: Consider the standard Fog computing architecture. In which of the following layer will ‘very time sensitive data’ be processed? a. Nearest fog node b. Distant aggregate fog node c. Cloud d. Does not matter Correct Answer: a. Nearest fog node Detailed Solution: Since the data is very time sensitive, it is required that the nearest fog node processes the data so that immediate action can taken. This is the benefit of having fog computing. Refer to Working of Fog, Lecture 45@13:20 onwards. QUESTION 15: “Network, Accelerator, Compute and Storage” constitute the part of which view of fog computing architecture, as defined by OpenFog Consortium Architecture Working Group? a. System View b. Node View c. Software View d. None of these Correct Answer: b. Node View Detailed Solution: Fog Computing Architectural framework has several views, node, system and software among them. Network, Accelerator, Compute and Storage” fall under Node View. Refer Chapter 11 (Page 260) of “Introduction to IoT” by Sudip Misra, Anandarup Mukherjee, Arijit Roy, Cambridge University Press, 2021.  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 10 TYPE OF QUESTION:MCQ/MSQ Number ofquestions:15 Total marks: 15 X 1= 15 QUESTION 1: Data fusion enables optimum utilization of massive data gathered from multiple sources. a. True b. False Correct Answer: a. True Detailed Solution: Data fusion enables optimum utilization of massive data gathered from multiple sources. (Please refer Lecture 47@5:40) QUESTION 2: Which of the following is a stage in data fusion? a. Decision level b. Feature level c. Pixel level d. All of the above Correct Answer: d. All of the above Detailed Solution : Decision level, feature level, pixel level and signal level are the four stages of data fusion. (Please refer Lecture 47@11:00)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 3: Which of the following is one of the challenges of Data fusion? a. Imperfection b. Conflicts c. Ambiguity d. All of the above Correct Answer: d. All of the above Detailed Solution : The challenges of data fusion involves Imperfection, Conflicts and Ambiguity. (Please refer Lecture 47@9:16) QUESTION 4: Which of the following is one of the theory of evidence-based mathematical methods of data fusion? a. Belief function b. Bayesian analysis c. ANN d. None of these Correct Answer: a. Belief function Detailed Solution: Belief function is one of the theory of evidence-based mathematical methods of data fusion. (Please refer Lecture 47 @11:49) QUESTION 5: DLNA stands for Digital Living Network Alliance. a. True b. False Correct Answer: a. True Detailed Solution: DLNA stands for Digital Living Network Alliance. (Please refer Lecture 48@13:45)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 6: Which of the following are the functional layers in smart parking? a. Information collection b. System Deployment c. Service Dissemination d. All of these Correct Answer: d. All of these Detailed Solution: Information collection, System Deployment and Service Dissemination are the three functional layers in smart parking (Please refer Lecture 47@17:25) QUESTION 7: Which of the following statements are true about the HAN standards? Statement I: Physical and MAC layers are defined by IEEE802.15.4. Statement II: Network layer is defined by Zigbee. Statement III: Application layer is defined by IEEE802.15.4 a. Statements I and II b. Statements I and III c. Statements II and III d. Statements I, II and III Correct Answer: a. Statements I and II Detailed Solution: Physical and MAC layers are defined by IEEE802.15.4. Network layer and Application layers are defined by Zigbee. (Please refer Lecture 48@16:11)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 8: Which of the following are true about X-10? Statement I: It allows remote control of compliant transmitters. Statement II: It has low speed and data rate. Statement III: It is adopted by GE. a. Statement I and II b. Statement II and III c. Statement I and III d. Statement I, II and III Correct Answer: d. Statement I, II and III Detailed Solution: X-10 allows remote control of compliant transmitters, has low speed and data rate and is adopted by GE. (Please refer Lecture 48@17:04) QUESTION 9: Fill in the blank. ____________enables vehicles to wirelessly share a diverse range of information. a. Local area network b. V2X Paradigm c. V2A Paradigm d. Metropolitan area network Correct Answer: b. V2X Paradigm Detailed Solution: V2X enables vehicles to wirelessly share a diverse range of information (Please refer Lecture 49@10:48)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 10: Which of the following is a property of Vehicular Ad-hoc Networks? a. Is based on DSRC b. Is based on WAVE c. Guaranteed low latency d. All of these Correct Answer: d. All of these Detailed Solution: VANETs are based on DSRC and WAVE. They also have guaranteed low-latency in mobile environments. (Please refer Lecture 49@16:50) QUESTION 11: Knob is a switch type of INN. a. True b. False Correct Answer: a. True Detailed Solution: Knob is a switch type of INN. (Please refer Lecture 49@23:56) QUESTION 12: Which of the following is responsible for central coordination in Body-brain architecture? a. Body b. INN c. Spinal cord d. None of these Correct Answer: d. None of these Detailed Solution: The brain is responsible for central coordination in Body-brain architecture (Please refer Lecture 49@23:03)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 13: Which of the following stands for DSRC? a. Directed Short Range Communication b. Dedicated Short Range Communication c. Directed Small Range Communication d. Dedicated Small Range Communication Correct Answer: b. Dedicated Short Range Communication Detailed Solution: DSRC stands for Dedicated Short Range Communication (Please refer Lecture 50@7:27) QUESTION 14: Ad-hoc is a domain of VANET. a. True b. False Correct Answer: a. True Detailed Solution: Ad-hoc is a domain of VANET. (Please refer Lecture 50@14:12) QUESTION 15: What are the disadvantages of V2X communication? a. Increased traffic safety b. Tracking of movement c. Efficient use of fuel d. None of these Correct Answer: b. Tracking of movement Detailed Solution: Disadvantages of V2X communication includes tracking of movement, violation of privacy, loss of data control, etc. (Please refer Lecture 50@21:04) ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 11 TYPE OF QUESTION:MCQ/MSQ Number ofquestions:15 Total marks: 15 X 1= 15 QUESTION 1: What are some of the other names of the smart grids? a. Electricity with a brain b. Energy internet c. Electronet d. All of these Correct Answer: d. All of these Detailed Solution: Smart grids are also known as Electricity with a brain, Energy internet, and Electronet. (Please refer Lecture 51@8:33) QUESTION 2: Smart Grid follows which type of the flow of energy? a. Bidirectional b. Unidirectional c. All of these d. None of these Correct Answer: a. Bidirectional Detailed Solution: Smart grid is a modernized grid that enables bidirectional flow of energy. (Please refer Lecture 51@9:43)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 3: Which of the following is not a benefit associated with smart grids? a. Efficient transmission of electricity b. Lower electricity rates c. Unreliable and insecure electricity d. Improved security Correct Answer: c. Unreliable and insecure electricity Detailed Solution: Smart Grids provide efficient transmission of electricity, lower electricity rates and Improved security. (Please refer Lecture 51@11:26) QUESTION 4: Which of the following is a component of smart grid communication? a. Gateways b. Smart meters c. MDMSs d. All of these Correct Answer: d. All of these Detailed Solution: The components of Smart Grid are Smart meters, Gateways, DAUs and MDMSs (Please refer Lecture 52 @12:16) QUESTION 5: Fill in the blank. ___________ can be used as an energy source in on-peak hours. a. PMUs b. DAUs c. PEVs d. None of these Correct Answer: c. PEVs Detailed Solution: PEVs or Plug-In Electric Vehicles can be used as an energy source in on-peak hours(Please refer Lecture 52 @6:29)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 6: Which of the following is a type of Dynamic System Attacks? a. Replay Attacks b. Dynamic data injection attacks c. Covert attacks d. All of these Correct Answer: d. All of these Detailed Solution: Replay Attacks, Dynamic data injection attacks and Covert attacks are all types of Dynamic System Attacks (Please refer Lecture 52@19:55) QUESTION 7: Which of the following statements are true about gateways? Statement I: Each gateway connects a few closely located smart meters. Statement II: Gateways communicate mostly based on WiFi. Statement III: They help in two-way communication. a. Statements I and II b. Statements I and III c. Statements II and III d. Statement I, II and III Correct Answer: d. Statements I, II and III Detailed Solution: The gateways connect a few closely located smart meters, communicate mostly on WiFi and help in two-way communication. (Please refer Lecture 52@14:11)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 8: Fill in the blank. ____________ is a centralized coordinator for smart grid communication. a. Gateway b. Smart meter c. PMU d. MDMS Correct Answer: d. MDMSs Detailed Solution: MDMS is a centralized coordinator for smart grid communication. (Please refer Lecture 52@15:32) QUESTION 9: Fill in the blank. ____________ are available protocols for smart home appliances. a. C-Bus b. DECT c. EnOcean d. All of these Correct Answer: d. All of these Detailed Solution: C-Bus, DECT, EnOcean and Universal Powerline Bus (Please refer Lecture 52@12:35)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 10: Fill in the blank. IIoT is a network of____________. a. Physical objects b. Systems c. Platforms d. All of the above Correct Answer: d. All of the above Detailed Solution: IIoT is a network of physical objects, systems, platforms and applications (Please refer Lecture 53@15:24) QUESTION 11: IIoT is based on Rip & Replace approach. a. True b. False Correct Answer: b. False Detailed Solution: IIoT is based on wrap & re-use approach. (Please refer Lecture 53@9:53) QUESTION 12: Which of the following happened in the 1st Revolution? a. Mass production b. Internet evolution c. Automation d. None of these Correct Answer: d. None of these Detailed Solution: Mass production, internet evolution, automation happened in forth revolution. (Please refer Lecture 53@10:06)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 13: Which of the following is a challenge of IIoT? a. Worker health and safety b. Environmental production c. Optimized operations d. All of these Correct Answer: d. All of these Detailed Solution: Worker health and safety, environmental production and optimized operations are all the safety challenges of IIoT. (Please refer Lecture 54@15:15) QUESTION 14: Monitoring and restoration of the traditional electrical grid is done manually. a. True b. False Correct Answer: a. True Detailed Solution: Monitoring and restoration of the traditional electrical grid is done manually (Please refer Lecture 51@5:34) QUESTION 15: What is Hadoop used in? a. Distributed processing of large datasets b. Large clusters of computers c. All of these d. None of these Correct Answer: c. All of these Detailed Solution: Hadoop is used for distributed processing of large datasets across Large clusters of computers (Please refer Lecture 55@23:18) ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 12 TYPE OF QUESTION: MCQ/MSQ Number ofquestions:15 Total marks: 15 X 1= 15 QUESTION 1: The two types of data analysis are _____________. a. Qualitative and Quantitative b. Repetitive and Quantitative c. Repetitive and Qualitative d. All of these Correct Answer: a. Qualitative and Quantitative Detailed Solution: Qualitative and Quantitative are the two types of data analysis. (Please refer Lecture 56@2:33) QUESTION 2: Which of the following is a principle of Qualitative analysis? a. Notice things b. Think about things c. Collect things d. All of these Correct Answer: d. All of these Detailed Solution: The three principles of Qualitative analysis are: Notice things, think about things and collect things. (Please refer Lecture 56@4:12)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 3: Select the statement(s) that denote the type of ANOVA. Statement I: One way analysis Statement II: Two way analysis Statement III: K-way analysis a. Statement I b. Statement II c. Statements I, II, and III d. None of these Correct Answer: c. Statements I, II, and III Detailed Solution: The types of ANOVA includes One way analysis, Two way analysis and K-way analysis (Please refer Lecture 56@11:57) QUESTION 4: What is the type of the data dispersion? a. Range b. Average absolute deviation c. Variance d. All of these Correct Answer: d. All of these Detailed Solution: Range, average absolute deviation and variation are the type of data dispersions. (Please refer Lecture 56@13:43)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 5: The process by which numerical data is analyzed is known as __________. a. Qualitative analysis b. Quantitative analysis c. None of these d. All of these Correct Answer: b. Quantitative analysis Detailed Solution: Quantitative analysis is the process by which numerical data is analyzed. (Please refer Lecture 56@4:47) QUESTION 6: The mathematical equation that is formulated in the form of relationships between variables is known as __________. a. Logical model b. Relational model c. Data dispersion d. Statistical model Correct Answer: d. Statistical model Detailed Solution: The mathematical equation that is formulated in the form of relationships between variables is known as Statistical model (Please refer Lecture 56@7:53)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 7: What are the two types of statistical models? a. Qualitative and quantitative b. Complete and incomplete c. Regression and dispersion d. None of these Correct Answer: b. Complete and incomplete Detailed Solution: Complete and incomplete are two types of statistical models (Please refer Lecture 56@8:11) QUESTION 8: Contingency table is also known as? a. Cross tabulation b. Cross table c. All of these d. None of these Correct Answer: c. All of these Detailed Solution: Contingency table is also known as Cross tabulation and Cross table. (Please refer Lecture 56@14:36)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 9: Advances in sensor and connectivity have disabled preventive care. a. True b. False Correct Answer: b. False Detailed Solution: Advances in sensor and connectivity have disabled preventive care. (Please refer Lecture 58@4:22) QUESTION 10: Which of the following is a feature of IoT Healthcare?. a. Non-invasive monitoring b. Cloud-based analytics c. Wireless transmission d. All of these Correct Answer: d. All of these Detailed Solution: Non-invasive monitoring, Cloud-based analytics and Wireless transmission are all types of IoT healthcare. (Please refer Lecture 58@12:36) QUESTION 11: Which of the following are components of IoT? a. Sensing layer b. Aggregated layer c. Processing layer d. All of these Correct Answer: d. All of these Detailed Solution: Sensing layer, Aggregated layer, Processing layer and cloud platform are components of IoT. (Please refer Lecture 58@8:17)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 12: Which of the following is the advantage of activity monitoring? a. Hard integration b. Long term monitoring c. Expensive d. None of these Correct Answer: b. Long term monitoring Detailed Solution: Long term monitoring is one of the advantages of Activity monitoring. (Please refer Lecture 59@16:17) QUESTION 13: Deep learning based data analysis cannot be performed on videos a. True b. False Correct Answer: b. False Detailed Solution: Deep learning based data analysis can be done on sensor data, images and videos. (Please refer Lecture 59@19:34)  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur QUESTION 14: Which of the following is true for in-place activity monitoring data analysis? a. Low power b. Good network connection required c. On-device d. Group-based analytics Correct Answer: c. On device Detailed Solution: In-place activity monitoring data analysis is on-device and power intensive (Please refer Lecture 59@20:10) QUESTION 15: Fill in the blank. Processing the handheld activity device data with artificial intelligence can be used for ________. a. Fall detection b. Heart rate detection c. Vehicle detection d. All of these Correct Answer: a. Fall detection Detailed Solution: Processing the handheld activity device data with artificial intelligence can be used for detecting sudden fall of a person. (Please refer Lecture 60@11:56) ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 0 TYPE OF QUESTION: MCQ/MSQ Number of questions: 10 Total marks: 10 X 1= 10 QUESTION 1: Which of the following allows us to identify objects and extract information? a. RFID b. Sensors c. Actuators d. IoT Nodes Correct Answer: a. RFID Detailed Solution: RFID Technology allows us to automatically identify and track tags that are attached to the objects. It extracts information from the tags through electromagnetic fields. See lecture 1 @ 12:57 QUESTION 2: How many layers does Zigbee consist of? a. 1 b. 2 c. 3 d. 4 Correct Answer: d. 4 Detailed Solution: Zigbee consists of 4 layers: Physical, Medium Access Control, Network, and Application. See lecture 48 @ 16:11 QUESTION 3: Which of the following is not a component of cloud computing? a. Clients b. Local Servers c. Services d. Applications  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Correct Answer: b. Local Servers Detailed Solution: Cloud computing components include clients, services, applications, platform, storage, and infrastructure. See lecture 37 @ 23:29 QUESTION 4: Which of the following is a distance measuring sensor module? a. DHT22 b. HC-SR04 c. TSL2591 d. HC-SR505 Correct Answer: b. HC-SR04 Detailed Solution: HC-SR04 is the distance measuring module ultrasonic sensor, which measures the distance between 2cm~450cm. See lecture 3 @ 5:00 QUESTION 5: Which of the following is a component in a typical sensor network? a. Sink b. Gateway c. Router d. All of these Correct Answer: d. All of these Detailed Solution: A typical sensor network comprises of sensor nodes, routers, gateway, and sink. QUESTION 6: Which of the following sensors are responsible for measuring orientation and angular velocity? a. Accelerometer b. GPS c. Temperature d. None of these  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Correct Answer: d. None of these Detailed Solution: A gyroscope is responsible for measuring orientation and angular velocity. See lecture 59 @ 15:41 QUESTION 7: “ISA 100.11A” is a wireless networking technology standard. ISA stands for _______. a. International Society of Automation b. International Society of Advancement c. Industrial Society of Automation d. Industrial Society of Advancement Correct Answer: a. International Society of Automation Detailed Solution: ISA100.11a is a wireless networking technology standard developed by the International Society of Automation (ISA). See lecture 13@ 15:55 QUESTION 8: Which of the following is not a difference between traditional data center and cloud computing? a. Scalability b. Flexibility c. Elasticity d. Storage Correct Answer: d. Storage Detailed Solution: Major differences between traditional data center and cloud computing include scalability, flexibility, elasticity, automation, running costs, and security See lecture 39 @ 11:02 QUESTION 9: Smart grid is also known as the energy internet. a. True b. False  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Correct Answer: a. True Detailed Solution: Smart grid is also known as the energy internet. See lecture 51 @ 7:51 QUESTION 10: Can a point of node failure result in the partition of the network in the stationary sensor network? a. Yes b. No Correct Answer: a. Yes Detailed Solution: If there is a failure in the stationary sensor network then it is likely that the point of failure can partition the network into two or more fragments. See lecture 18 @ 01:10 ************END***********  NPTEL Online Certification Courses Indian Institute of Technology Kharagpur Introduction to Internet of Things Assignment-Week 1 TYPE OF QUESTION: MCQ/MSQ Number of questions: 15 Total marks: 15 X 1= 15 QUESTION 1: What is the full form of IoT? a. Internet of Tasks b. Internet of Things c. Internet of Tasks d. None of these Correct Answer: b. Internet of Things Detailed Solution: The full form of IoT is “Internet of Things” See lecture 1 (Introduction to IoT – Part - I) @ 1:30 QUESTION 2: Which of the following technologies have u