Introduction To Industry 4.0 And Industrial Internet Of Things Week 7 NPTEL Assignment Answers 2025

NPTEL Introduction To Industry 4.0 And Industrial Internet Of Things Week 7 Assignment Answers 2024

1. Which of the following stands for LP in LPWAN?
a. Large Power
b. Light Power
c. Low Power
d. Long Range

✅ Answer :- c
Explanation: LPWAN stands for Low Power Wide Area Network, used in IoT for long-range, low-power communication.

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2. “We need to pay a license fee to use LoRa in the 868 MHz radio frequency band in Europe.” State True or False.
a. True
b. False

✅ Answer :- b
Explanation: LoRa operates in the unlicensed ISM bands, so no license fee is required in Europe.

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3. Which of the following is true about the SIGFOX network in terms of messages and payload?
a. Up to 50 messages/day with 8 bytes
b. Up to 75 messages/day with 10 bytes
c. Up to 140 messages/day with 12 bytes
d. Up to 200 messages/day with 15 bytes

✅ Answer :- c
Explanation: SIGFOX allows 140 messages per day, each with up to 12 bytes payload.

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4. Which library (header file) is used for interfacing the DHT22 sensor?
a. DHT.h
b. DHT22.h
c. DHT11.h
d. Adafruit_DHT.h

✅ Answer :- a
Explanation: The DHT.h library is commonly used to interface DHT11/DHT22 sensors in Arduino-based projects.

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5. Which of the following topologies are supported by Zigbee?
a. Point-to-Point and Star
b. Bus and Ring
c. Tree, and Mesh
d. Ring and Mesh

✅ Answer :- c
Explanation: Zigbee supports Star, Tree, and Mesh topologies for flexible and scalable networking.

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6. The physical and MAC layers of Zigbee communication protocol is based on ____________
a. IEEE 802.11
b. IEEE 802.15.4
c. IEEE 802.3
d. IEEE 802.16

✅ Answer :- b
Explanation: Zigbee is built on IEEE 802.15.4, designed for low-rate wireless personal area networks.

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7. “Xbee is a mesh communication protocol based on IEEE 802.15.4 whereas Zigbee is the product that uses the Xbee protocol.” True or False?
a. True
b. False

✅ Answer :- b
Explanation: Xbee is a hardware module that can use Zigbee protocol, not the other way around.

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8. Function of the coordinator node in a Zigbee network?
a. Data relay
b. End device connector
c. Acts as the root of the network and bridge between different networks
d. Control plane

✅ Answer :- c
Explanation: Coordinator node initializes the network and manages routing and addressing.

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9. Which of the following is/are the data characteristics of IIoT processing?
a. Polymorphism
b. Temporal relationships in data
c. Correlation in space, time, and other dimensions
d. All of the above

✅ Answer :- d
Explanation: IIoT data is complex and dynamic, involving all the above characteristics.

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10. Which of the following is false about the rule-based engine?
a. Extract causal and temporal patterns
b. Correlates multiple data streams
c. Cannot process data in near real-time
d. Decision-making based on predefined rules

✅ Answer :- c
Explanation: Rule-based engines can process near real-time data, so the statement is false.

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11. Limitation of current CEP systems?
a. Manual threshold specification
b. No run-time threshold updates
c. Not context-aware
d. All of the above

✅ Answer :- d
Explanation: These are major limitations in Complex Event Processing (CEP) systems.

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12. Which of the following is false about Smart Water Management System services?
a. Entirely non-replicable services
b. Fully customizable services
c. Application-specific services
d. Entirely replicable services

✅ Answer :- a
Explanation: Services in such systems are replicable and customizable; option a is false.

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13. “iRobot-Factory is a cognitive manufacturing factory using cognitive intelligence and edge computing.” True or False?
a. True
b. False

✅ Answer :- a
Explanation: iRobot-Factory uses AI and edge computing for smart manufacturing.

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14. Which of the following is false about the design of SmartSantander?
a. Heterogeneity
b. Reliability
c. Mobility
d. Unrealistic experimentation

✅ Answer :- d
Explanation: SmartSantander was designed for real-world realistic experiments, so the statement is false.

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15. Which of the following represents a type of Industrial Control System?
a. Programmable Logic Compiler
b. Decentralized Control Suite
c. Supervisory Control and Data Acquisition
d. Distributed Compiled System

✅ Answer :-c
Explanation: SCADA is a major Industrial Control System (ICS) used for monitoring and control.