Intro to IoT: Assignment Week 0

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Questions and Answers

Which technology plays a crucial role in automatically identifying and tracking objects by extracting data from tags through electromagnetic fields?

  • IoT Nodes
  • Sensors
  • Actuators
  • RFID (correct)

Zigbee is a communication protocol commonly used in IoT devices. How many layers does the Zigbee protocol stack define?

  • 1
  • 3
  • 2
  • 4 (correct)

In the context of cloud computing, which of the following components is typically NOT located within the cloud infrastructure itself?

  • Services
  • Clients
  • Local Servers (correct)
  • Applications

Which of the following sensor modules is specifically designed for measuring distance using ultrasonic waves?

<p>HC-SR04 (B)</p>
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Which of the following choices lists components that are all integral to a typical sensor network's architecture?

<p>All of these (A)</p>
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Which sensor is best suited to measuring orientation and angular velocity?

<p>None of these (C)</p>
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In the context of wireless networking standards, what does the acronym 'ISA' stand for in 'ISA 100.11A'?

<p>International Society of Automation (D)</p>
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Which of the following is NOT a fundamental differentiating factor when contrasting traditional data centers with cloud computing environments?

<p>Storage (C)</p>
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Which of these best describes how RFID is primarily used in the context of IoT?

<p>To identify and track objects automatically. (B)</p>
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Within the Zigbee protocol stack, which layer is responsible for defining the standards for radio frequency communication?

<p>Physical Layer (C)</p>
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Which aspect of cloud computing allows resources to be increased or decreased dynamically based on demand?

<p>Scalability (D)</p>
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If you need a sensor to accurately gauge the distance of an object within a range of 5cm to 300cm for a robotics project, which sensor is the most suitable?

<p>HC-SR04 (D)</p>
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In a wide-scale environmental monitoring sensor network, what role does the gateway primarily serve?

<p>Connecting the sensor network to other networks. (B)</p>
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For a drone that needs to maintain stable flight and accurately adjust its orientation in windy conditions, which sensor is essential?

<p>Gyroscope (C)</p>
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Which organization created the ISA100.11a wireless networking technology standard?

<p>International Society of Automation (B)</p>
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Which of the following factors most directly contributes to the reduced operational expenditure (OPEX) when migrating from a traditional data center to the cloud?

<p>Reduced hardware maintenance. (A)</p>
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In a sprawling agricultural environment employing a wireless sensor network, if several key routing nodes experience failures due to weather events, what is the most likely outcome?

<p>The network divides into isolated sub-networks, causing data gaps. (D)</p>
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Flashcards

What is RFID?

Technology that identifies and tracks objects automatically using tags and electromagnetic fields.

How many layers in Zigbee?

Four layers: Physical, Medium Access Control, Network, and Application.

Components of cloud computing?

Clients, services, applications, platform, storage and infrastructure.

What is HC-SR04?

Measures distance using ultrasonic waves between 2cm~450cm.

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Typical sensor network components?

Sensor nodes, routers, gateway, and sink.

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Measures orientation & angular velocity?

A gyroscope is responsible for measuring orientation and angular velocity.

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ISA in "ISA 100.11A" stands for?

International Society of Automation.

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Differences between traditional data center and cloud computing?

Scalability, flexibility, elasticity, automation, running costs and security.

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Smart grid = energy internet?

Smart grids are also known as the energy internet.

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Consequence of node failure?

It splits the network, if failure in stationary sensor network then it is likely that the point of failure can partition the network into two or more fragments.

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Study Notes

  • This set of questions is from the Assignment-Week 0 for Introduction to Internet of Things course.
  • Total marks for the assignment: 10.
  • Each question carries 1 mark.

Identifying Objects and Extracting Information

  • Radio-Frequency Identification (RFID) is used to automatically identify and track tags attached to objects.
  • RFID technology extracts information from tags via electromagnetic fields.

Zigbee Layers

  • Zigbee consists of 4 layers: Physical, Medium Access Control, Network, and Application.

Cloud Computing Components

  • Cloud computing components include: clients, services, applications, platform, storage, and infrastructure.
  • Local servers are not components of cloud computing.

Distance Measuring Sensor Module

  • HC-SR04 is an ultrasonic sensor module used for distance measurement.
  • HC-SR04 measures distances between 2cm to 450cm.

Typical Sensor Network Components

  • A typical sensor network comprises sensor nodes, routers, gateway, and sink.

Sensors for Orientation and Angular Velocity

  • A gyroscope measures orientation and angular velocity.

ISA100.11a

  • ISA100.11a is a wireless networking technology standard.
  • ISA stands for International Society of Automation.
  • ISA100.11a was developed by the International Society of Automation (ISA).

Differences Between Traditional Data Center and Cloud Computing

  • Major differences between traditional data center and cloud computing include scalability, flexibility, elasticity, automation, running costs, and security.
  • Storage is not a key difference.

Smart Grid

  • Smart grid is also known as the energy internet.

Node Failure in Stationary Sensor Network

  • If a node fails in a stationary sensor network, the network may be partitioned into two or more fragments at the point of failure.

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