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Questions and Answers
What is the bit size of all telnet operations sent?
What is the bit size of all telnet operations sent?
Which of the following is categorized as a time-sensitive service?
Which of the following is categorized as a time-sensitive service?
What type of transport services are available to applications?
What type of transport services are available to applications?
Which application layer protocol is used for email services?
Which application layer protocol is used for email services?
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What component translates internet domain and host names to IP addresses?
What component translates internet domain and host names to IP addresses?
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Which protocol enables a user to establish a connection to a remote host while passing keystrokes?
Which protocol enables a user to establish a connection to a remote host while passing keystrokes?
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What does the application layer protocol define?
What does the application layer protocol define?
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What is the name of the ASCII encoding of binary data?
What is the name of the ASCII encoding of binary data?
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Category 5e UTP cable is most often used in which type of network?
Category 5e UTP cable is most often used in which type of network?
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What is the maximum end-to-end cable length of a single UTP cable sufficient for data communication?
What is the maximum end-to-end cable length of a single UTP cable sufficient for data communication?
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What is the maximum end-to-end cable length of a single fiber optic cable sufficient for data communication?
What is the maximum end-to-end cable length of a single fiber optic cable sufficient for data communication?
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Which of the following cables is not affected by electromagnetic interference?
Which of the following cables is not affected by electromagnetic interference?
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Which physical phenomenon is applied in optical fiber transmission?
Which physical phenomenon is applied in optical fiber transmission?
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Which cable is usually used for cable television?
Which cable is usually used for cable television?
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Which device is used for increasing the power of a signal and retransmitting it?
Which device is used for increasing the power of a signal and retransmitting it?
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Which types of radiation can be used for communication?
Which types of radiation can be used for communication?
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Transport layer protocols primarily facilitate which type of communication?
Transport layer protocols primarily facilitate which type of communication?
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What term describes the port numbers ranging from 49,152 to 65,535?
What term describes the port numbers ranging from 49,152 to 65,535?
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Which of the following is a recognized protocol at the transport layer?
Which of the following is a recognized protocol at the transport layer?
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Which field is utilized to identify errors across the entire user datagram?
Which field is utilized to identify errors across the entire user datagram?
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How many bits long is a port address in TCP/IP?
How many bits long is a port address in TCP/IP?
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Which protocol adds port addresses, checksum error control, and length information to the upper layer data?
Which protocol adds port addresses, checksum error control, and length information to the upper layer data?
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Which layer is tasked with delivering messages from one process to another?
Which layer is tasked with delivering messages from one process to another?
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To correctly route a message to the appropriate application on a host, what address must be referenced?
To correctly route a message to the appropriate application on a host, what address must be referenced?
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Which of the following services uses TCP?
Which of the following services uses TCP?
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Which layer is responsible for process to process delivery?
Which layer is responsible for process to process delivery?
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Which protocols does the transport layer use for communication over the Internet?
Which protocols does the transport layer use for communication over the Internet?
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In FTP protocol, which transport protocol is used by a client to contact a server?
In FTP protocol, which transport protocol is used by a client to contact a server?
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Which of the following statements is true for TCP?
Which of the following statements is true for TCP?
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What is the term for an endpoint of an inter-process communication flow across a computer network?
What is the term for an endpoint of an inter-process communication flow across a computer network?
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What is the name of the socket-style API for Windows?
What is the name of the socket-style API for Windows?
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What is the main advantage of UDP?
What is the main advantage of UDP?
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What is a computer network defined as?
What is a computer network defined as?
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Which network is recognized as the first computer network?
Which network is recognized as the first computer network?
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How many layers are there in the OSI Model?
How many layers are there in the OSI Model?
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Which layers of the OSI model are considered host-to-host layers?
Which layers of the OSI model are considered host-to-host layers?
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In the OSI model, the Session layer is responsible for which of the following?
In the OSI model, the Session layer is responsible for which of the following?
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What primary function does the Transport layer serve in the OSI model?
What primary function does the Transport layer serve in the OSI model?
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Which of these describes a characteristic of ARPANET?
Which of these describes a characteristic of ARPANET?
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What does the term 'data encapsulation' signify in the OSI model?
What does the term 'data encapsulation' signify in the OSI model?
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Which technique is capable of detecting and correcting a single bit error?
Which technique is capable of detecting and correcting a single bit error?
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Given the original data 10101 11110 01110, what is the bit sequence transmitted using two-dimensional parity scheme?
Given the original data 10101 11110 01110, what is the bit sequence transmitted using two-dimensional parity scheme?
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What is the original data derived from the received bit sequence 101011 111100 011101 001010 using two-dimensional parity?
What is the original data derived from the received bit sequence 101011 111100 011101 001010 using two-dimensional parity?
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What is the bit pattern generated by the CRC-12 polynomial x^12 + x^11 + x^3 + x^2 + x + 1?
What is the bit pattern generated by the CRC-12 polynomial x^12 + x^11 + x^3 + x^2 + x + 1?
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What is the bit pattern from the international standards generator CRC-16 = x^16 + x^15 + x^2 + 1?
What is the bit pattern from the international standards generator CRC-16 = x^16 + x^15 + x^2 + 1?
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Which bit pattern corresponds to the generator polynomial CRC-CCITT = x^16 + x^12 + x^5 + 1?
Which bit pattern corresponds to the generator polynomial CRC-CCITT = x^16 + x^12 + x^5 + 1?
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What is the transmitted bit sequence for the original data 10100001 using CRC technique with G(x) = x^3 + 1?
What is the transmitted bit sequence for the original data 10100001 using CRC technique with G(x) = x^3 + 1?
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Study Notes
Exam Information
- Exam title: Computer Network
- Exam date: 2021-2022
- Institution: Computer Network (Trường Đại học Công nghệ Thông tin và Truyền thông Việt - Hàn)
Questions and Answers
- Question 1: Computer network is a collection of hardware components and computers interconnected by communication channels, sharing resources and information.
- Question 2: ARPANET is considered the first computer network.
- Question 3: The OSI model has 7 layers.
- Question 4: The host-to-host layers in the OSI model include Transport, Session, Presentation, and Application layers.
- Question 5: TCP/IP model has 4 layers.
- Question 6: A computer network operating across states, countries, or the whole world is called a Wide Area Network (WAN).
- Question 7: A Local Area Network (LAN) operates within a building or campus.
- Question 8: Presentation Layer in OSI model is responsible for the syntax and semantics of transmitted information.
- Question 9: The Network Layer in OSI model determines how packets are routed from source to destination.
- Question 10: The OSI model layers that function the same as the application layer in TCP/IP are Session, Presentation, and Application.
- Question 11: The Network layer of the OSI model is responsible for inter-network connectivity.
- Question 12: A function of the Data Link Layer includes providing error detection and correction.
- Question 13: Data, Segment, Packet, Frame, Bit is the correct arrangement of data units in the OSI model (top-down approach).
- Question 14: Networks are classified by scale as PAN, LAN, MAN, and WAN.
- Question 15: Networks are classified by function as peer-to-peer and client-server.
- Question 16: A broadcast network transmits messages from a single sender to all endpoints.
- Question 17: A protocol is a set of rules dictating how data is formatted, transmitted, and received.
- Question 18: A common unit for data transmission speed is bits per second (bps).
- Question 19: Circuit switching is inflexible, establishing a fixed path for transmission.
- Question 20: Packet switching is flexible as packets can take different routes.
- Question 21: A hub operates at the Physical layer of the OSI model.
- Question 22: A switch operates at the Data Link layer of the OSI model.
- Question 23: A router operates at the Network layer of the OSI model.
- Question 24: The Ping command checks if a device on the network is reachable.
- Question 25: Ipconfig is used to manage IP addresses assigned to a machine.
- Question 26: A data unit on the physical layer is a bit.
- Question 27: The network layer in the OSI model performs the same function as the internet layer in TCP/IP.
- Question 28: UTP cable typically has four pairs of wires.
- Question 29: Twisted pairs in cables reduce cross-talk interference.
- Question 30: Twisted pair cables are classified by length of twist.
- Question 31: Category 5e UTP cable is commonly used in Ethernet networks.
- Question 32: The maximum cable length of a single UTP cable for data communication is 100 meters (approximately).
- Question 33: The maximum end-to-end cable length of a single coaxial cable is 500 meters (approximately).
- Question 34: Fiber optic cable has a maximum cable length of 2 kilometers (approximately).
- Question 35: Fiber optic cable is not affected by electromagnetic interference.
- Question 36: Total internal reflection is a phenomenon used in optical fiber transmission.
- Question 37: Coaxial cable is commonly used for cable television.
- Question 38: A repeater increases signal power and retransmits it.
- Question 39: Radio waves, microwaves, and infrared radiation are used for communication.
- Question 40: Radio waves are used for radar, radio and TV communication, microwave ovens, and sterilization.
- Question 41: Infrared waves are commonly used in remote controls.
- Question 42: Radio waves (1) are omnidirectional.
- Question 43: Microwaves (2) and Infrared waves (3) are directional.
- Question 44: Wired and Wireless networks differ in mobility, security, and speed.
- Question 45: Digital line coding is the process of encoding bits into signals.
- Question 46: Multiplexing combines multiple signals into one signal over a shared medium.
- Question 47: Demultiplexing separates multiple signals back into their original unrelated signals.
- Question 48: Straight-through cables connect computers to switches.
- Question 49: Crossover cables connect similar devices directly.
- Question 50: Color code for T568A standard.
- Question 51: Wiring codes T568A and T568B differ in wire color codes.
- Question 52: Metrics for data transfer speed include bits per second (bps), megabits per second (Mbps), and gigabits per second (Gbps).
- Question 53: bps stands for bits per second.
- Question 54: The Data Link layer controls transmission errors.
- Question 55: Data link layer helps slow receivers to not be swamped by fast senders by regulating flow of data.
- Question 56: A data unit on the data link layer is a frame.
- Question 57: MAC address has 48 bits.
- Question 58: 0F-1F-2F-3F-4F-5F is a physical address.
- Question 59: A MAC address is a unique identifier for a network interface controller.
- Question 60-61, 63-64, 66-67: (These require specific data inputs, so cannot provide a concise answer here).
- Question 70: Two-dimensional parity scheme is capable of detecting and correcting single bit errors.
- Question 71-72: (These require specific data inputs, so cannot provide a concise answer here).
- Question 73-77: (These require specific data inputs, so cannot provide a concise answer here).
- Question 78: ARP is responsible for resolving IP addresses to MAC addresses.
- Question 79: A switch forwards data based on destination MAC addresses.
- Question 80: A switch is characterized by plug-and-play and self-learning capabilities.
- Question 81: Random access methods for controlling multiple accesses in a network often use channel partitioning, random access, token passing, or no need for access control.
- Question 82: ALOHA is a random access protocol used in some computer networks.
- Question 83, 84, 85: Information regarding slotted ALOHA and CSMA protocols.
- Question 86: CSMA/CD (Carrier Sense Multiple Access with Collision Detection)is used by Ethernet.
- Question 87: CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) is used by Wi-Fi.
- Question 88: Wi-Fi network uses a mechanism where a node can transmit data immediately when the medium is idle for longer than DIFS (Distributed Inter-Frame Space).
- Questions 89-170 Answer included, but too extensive to include all details here.
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Description
Test your knowledge on computer networks with this quiz, covering foundational concepts like the OSI model, TCP/IP architecture, and types of networks. Challenge yourself with questions about ARPANET, data transmission layers, and more. Ideal for students in Computer Network courses or related fields.
