NPTEL Introduction To Industry 4.0 And Industrial Internet Of Things Week 1 Assignment Answers 2025
1. Fill in the blank space designated by the question mark.
a. Snubber
b. Repeater
c. Processor
d. Amplifier
Answer :- c
2. What is the maximum data rate of Z-Wave communication technology?
a. 100 kbps
b. 250 kbps
c. 500 kbps
d. 1 Mbps
Answer :- a
3. Which device converts electromagnetic energy into electricity and vice versa?
a. Speaker
b. Antenna
c. Microphone
d. Strain gauge
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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
Answer :-
5. Which coding scheme is used by the IEEE 802.15.4 standard for transmitting information?
a. CSS
b. THSS
c. OFDM
d. DSSS
Answer :-
6. What is the standard transmission range of IEEE 802.15.4?
a. 10 m to 75 m
b. 1 m to 9 m
c. 15 cm to 60 cm
d. 1 cm to 10 km
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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
Answer :-
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
Answer :-
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
Answer :-
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
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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
Answer :-
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
Answer :-
13. Apart from MQTT, which IoT networking protocol supports the publish/subscribe framework?
a. XMPP
b. AMQP
c. DDS RTPS
d. All of these
Answer :-
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
Answer :-
15. Which of the following is not a component of RFID?
a. RFID Tag
b. RFID reader
c. Antenna
d. Router
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