Introduction To Internet Of Things Week 1 NPTEL Assignment Answers 2025

NPTEL Introduction To Internet Of Things Week 1 Assignment Answers 2024

Q1. What is the full form of IoT?
a. Internet of Tasks
b. Internet of Things
c. Internet of Tasks
d. None of these
✅ Answer: b. Internet of Things
Explanation: IoT stands for Internet of Things, which refers to a network of physical objects (devices) embedded with sensors, software, and connectivity to exchange data with other systems via the Internet.

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Q2. Which of the following technologies have unified and has resulted in the evolution of IoT?
a. Low-power embedded systems
b. Cloud Computing
c. Machine Learning
d. All of these
✅ Answer: d. All of these
Explanation: The convergence of low-power embedded systems, cloud computing, and machine learning has led to the development and rapid evolution of IoT.

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Q3. Which of the following are the enablers of IoT?
a. RFID
b. Nanotechnology
c. Sensors
d. All of these
✅ Answer: d. All of these
Explanation: All listed options—RFID, nanotechnology, and sensors—play key roles in enabling the functionality of IoT devices.

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Q4. Which of the following is/are a function of an IoT Gateway?
a. Connects the IoT LAN to a WAN
b. Can implement several LAN and WAN
c. Forwards packets between LAN and WAN on the IP layer
d. All of these
✅ Answer: d. All of these
Explanation: An IoT gateway acts as a bridge between local IoT networks and external networks, performing packet forwarding, protocol translation, and network connection.

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Q5. True or False: “The same address of an IoT device may be repeated in the domain of another gateway. The gateway has a unique network prefix, which can be used to identify them globally.”
a. True
b. False
✅ Answer: a. True
Explanation: Gateways use unique prefixes to avoid address conflicts, so device addresses can be reused in different gateway domains.

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Q6. The IPv4 notation uses __________ number of bits to represent an address.
a. 33
b. 32
c. Both (a) and (b)
d. None of these
✅ Answer: b. 32
Explanation: IPv4 addresses are 32-bit binary numbers, usually expressed in decimal as four octets separated by periods.

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Q7. (Duplicate of Q6)
✅ Same answer and explanation as above.

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Q8. The “Source Address” field in the IPv6 header is of _______ bits in length.
a. 32
b. 64
c. 128
d. None of these
✅ Answer: c. 128
Explanation: IPv6 addresses are 128 bits long, which allows for a vastly larger address space than IPv4.

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Q9. A device which detects or measures a physical property and records, indicates, or otherwise responds to it is called ___________ ?
a. A sensor
b. An actuator
c. A transducer
d. A processor
✅ Answer: a. A sensor
Explanation: A sensor measures physical properties such as temperature, pressure, or light and converts them into signals for processing.

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Q10. A microphone is an example of an
a. Input device and actuator
b. Only actuator
c. Only Transducer
d. Input device and transducer
✅ Answer: d. Input device and transducer
Explanation: A microphone converts sound waves into electrical signals, so it functions as a transducer and is also an input device.

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Q11. True or False: A sensor is only sensitive to the measured property for which it has been made.
a. True
b. False
✅ Answer: a. True
Explanation: A sensor is typically calibrated and designed to measure a specific physical property only, like temperature or humidity.

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Q12. Based on the data type, sensors are classified as __________ .
a. Only scalar
b. Only vector
c. Scalar and Vector/Multimedia
d. None of these
✅ Answer: c. Scalar and Vector/Multimedia
Explanation: Sensors are classified based on the type of data they generate: scalar (single value like temperature) or vector/multimedia (images, motion, etc.).

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Q13. True or False: The more is the resolution of a sensor, the less accurate it its precision.
a. True
b. False
✅ Answer: b. False
Explanation: Higher resolution generally implies better precision, although accuracy depends on calibration and quality.

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Q14. The sensitivity of a sensor under real conditions may differ from the value specified. This is called
a. Physical error
b. Sensitivity error
c. Rounding error
d. None of these
✅ Answer: b. Sensitivity error
Explanation: When a sensor’s actual sensitivity deviates from its specified value due to environmental or operational conditions, it’s called a sensitivity error.

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Q15. A sensor node is made up of which of the following?
a. Sensor/Sensing units
b. A processing unit
c. A power unit
d. All of these
✅ Answer: d. All of these
Explanation: A typical sensor node includes sensing, processing, and power units, and sometimes communication modules.