Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers
Get Nptel Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers in this post.
Table of Contents
Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers (July-Dec 2025)
Question 1. Which sensor system type is characterized by an output that oscillates before reaching steady state?
a) Zero order system
b) First order system
c) Second order system
d) Linear system
Question 2. Which of the following is NOT a correct example of a transducer?
a) Microphone
b) Wire
c) Speaker
d) Antenna
Question 3. The response of which of the following sensors depends on the magnitude of the direction and orientation of input parameter?
a) Scalar sensor
b) Passive sensor
c) Analog sensor
d) Vector sensor
Question 4. Which type of Zigbee node is responsible for network initialization and maintenance?
a) Router
b) End Device
c) Coordinator
d) Sensor
Question 5. Which two layers does IEEE 802.15.4 provide a framework for?
a) MAC and PHY
b) IP and TCP
c) HTTP and SSL
d) FTP and DNS
Question 6. How often are time slots allocated in Wireless HART?
a) 1 per second
b) 10ms per slot
c) 100ms per slot
d) 1 second per device
Question 7. How do passive RFID tags operate?
a) Use an internal battery
b) Use an external solar panel
c) Are powered by the reader inductively
d) Are manually activated
Question 8. Bluetooth technology is based on which type of networking?
a) Mesh
b) Piconet (Ad-hoc)
c) Star
d) Bus
Question 9. What process is used by Z-wave to bypass radio dead spots?
a) Network Slicing
b) Subnetting
c) Healing
d) Network Partitioning
Question 10. Which of the following best represents the ‘trunk’ in the IoT analogy?
a) ARM (Architectural Reference Model)
b) IoT applications
c) Communication protocols
d) End-user interfaces
Question 11. What is the function of the Registration Interface (RI) in CoRE?
a) Processes user login
b) Assigns MAC addresses
c) Encrypts transmitted data
d) Registers IoT resources to the directory
Question 12. Which of the following is not a message type in CoAP?
a) CON
b) NON
c) RST
d) ECHO
Question 13. Which of the following is an IP-based solution proposed by IETF for IoT?
a) Zigbee Alliance
b) Bluetooth SIG
c) CoRE
d) Wi-Fi Alliance
Question 14. State true or false. Sensor calibration is typically used for weeding-out repeatable errors in sensor readings.
a) True
b) False
Question 15. Which of the following is NOT true about WirelessHART?
a) It is a license-free protocol
b) It is not compatible with any legacy devices
c) WirelessHART uses the IEEE 802.15.4 standard for its protocols designing
d) WirelessHART makes device placements more accessible and cheaper
Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers (Jan-Apr 2025)
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Que. 1) Fill in the blank space designated by the question mark:
a) Snubber
b) Repeater
c) Processor
d) Amplifier
Que. 2) What is the maximum data rate of Z-Wave communication technology?
a) 100 kbps
b) 250 kbps
c) 500 kbps
d) 1 Mbps
Que. 3) Which device converts electromagnetic energy into electricity and vice versa?
a) Speaker
b) Antenna
c) Microphone
d) Strain gauge
Que. 4) What does ‘Range’ indicate in a sensor?
a) The correctness of the output
b) The smallest change in input that can be detected
c) The difference between the standard value and the value produced by the sensor
d) The highest and the lowest value of the physical quantity within which the sensor can actually sense
Que. 5) Which coding scheme is used by the IEEE 802.15.4 standard for transmitting information?
a) CSS
b) THSS
c) OFDM
d) PSSS
Que. 6) What is the standard transmission range of IEEE 802.15.4?
a) 10 m to 75 m
b) 1 m to 5 m
c) 15 cm to 60 cm
d) 1 cm to 10 km
Que. 7) Which low-power radio communication technology was designed as a simpler and cheaper alternative to Zigbee for small to medium-range connectivity?
a) Bluetooth
b) Z-Wave
c) RFID
d) NFC
Que. 8) Which organization has developed the ISA 100.11a standard?
a) Instrument Society of America
b) International Society of Automation
c) International Studies Association
d) International Solar Alliance
Que. 9) What communication modes are supported between two NFC devices?
a) Broadcast-Multicast
b) Master-Slave
c) Active-Active or Active-Passive
d) All of these
Que. 10) Which of the following is/are the drawbacks of proprietary non-IP-based solutions?
a) Limited flexibility to end users
b) Interoperability
c) Limited last-mile connectivity
d) All of these
11) Which MQTT QoS Level is also known as “at most once” delivery?
A) QoS 0
B) QoS 1
C) QoS 2
D) None of these
12) Fill in the blank: In CoRE, the IoT client uses ______ for the discovery of IoT devices.
A) Lookup interface
B) Resource Directory
C) Registration Interface
D) None of these
13) Apart from MQTT, which IoT networking protocol supports the publish/subscribe framework?
A) XMPP
B) AMQP
C) DDS RTPS
D) All of these
14) Which of the following IoT protocols is based on the session layer of the OSI model?
A) MQTT
B) CoAP
C) AMQP
D) DTLS
15) Which of the following is not a component of RFID?
A) RFID Tag
B) RFID reader
C) Antenna
D) Router
Course Name: Introduction To Industry 4.0 And Industrial Internet Of Things
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Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers (JUL – DEC 2024)
Q1.What is the primary function of a transducer?
a. To store energy
b. To convert signal from one physical form to another physical form
c. To generate eddy current
d. To generate heat
Answer: b. To convert signal from one physical form to another physical form
Q2. Which device converts sound to an electrical signal?
a. Speaker
b. Antenna
c. Microphone
d. Strain gauge
Answer: c. Microphone
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These are Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers
Q3.Which sensor can detect gases like LPG, CH4, and CO?
a. DHT22
b. MQ-5
c. HC-SR04
d. PIR
Answer: b. MQ-5
Q4.What does ‘Resolution’ indicate in a sensor?
a. The correctness of the output
b. The smallest change in input that can be detected
c. The range of sensing
d. The difference between standard and measured values
Answer: b. The smallest change in input that can be detected
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These are NPTEL Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers
Q5 .Which modulation technique is used by Zigbee for the 2.4 GHz band?
a. BPSK
b. QPSK
c. OQPSK
d. FSK
Answer:c. OQPSK
Q6.What does 6LoWPAN optimize?
a. Load balancing in Legacy High-power networks
b. Packet transmission in Low-power and lossy networks (LLN)
c. Cryptography in Medium-power networks
d. Error detection in Long-range networks
Answer: b. Packet transmission in Low-power and lossy networks (LLN)
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These are NPTEL Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers
Q7 .How long is the Network ID in a Z-Wave network?
a. 1 Byte
b. 2 Bytes
c. 4 Bytes
d. 8 Bytes
Answer: c. 4 Bytes
Q8.Which range is typical for Class 1 Bluetooth radios?
a. 1 meter
b. 10 meters
c. 30 meters
d. 100 meters
Answer: d. 100 meters
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These are Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers
Q9.What does the Constrained RESTful Environments (CORE) framework include for service discovery?
a. Registration Interface (RI)
b. Resource Directory (RD)
c. REST based protocols such as HTTP and CoAP
d. All of the above
Answer: d. All of the above
Q10.Which policy controls the duration for which transmitted data is considered to be valid in an IoT network?
a. History policy
b. Latency budget policy
c. Lifespan policy
d. Deadline policy
Answer: c. Lifespan policy
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These are Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers
Q11.How many levels of QoS does MQTT support?
a. 2
b. 3
C. 4
d. 5
Answer: b. 3
Q12.Which protocol is CoAP based on?
a. TCP
b. FTP
c. UDP
d. HTTP
Answer: c. UDP
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These are Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers
Q13.For what kind of applications is AMQP optimized for?
a. Entertainment
b. Financial
c. Vehicular
d. Educational
Answer: b. Financial
Q14 .Which layer in IoT architecture is responsible for predictive analytics and data management?
a. Sensing layer
b. Networking layer
c. Service layer
d. Interface layer
Answer: c. Service layer
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These are Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers
Q15.State True or False. A sensor’s accuracy does not depend upon it’s resolution.
a. True
b. False
Answer: a. True
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These are Introduction to Industry 4 and Industrial IoT Week 1 Assignment Answers
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