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Introduction To Internet Of Things Week 3

Session: JULY-DEC 2023

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Q1. State whether the following statement is true or false.
Statement: Wired HART lacks a network layer.
a. True
b. False

Answer: a. True

Q2. The HART physical layer is derived from _ protocol and operates only in ___ GHz ISM band.
a. IEEE 802.15.4, 2.4
b. IEEE 802.15.4, 4.8
c. IEEE 802.16.5, 4.8
d. None of these

Answer: a. IEEE 802.15.4, 2.4

Q3. State whether the following statement is True or False
Statement: Super-frames in HART consist of grouped 20ms wide timeslots.
a. True
b. False

Answer: b. False

Q4. _____ identifies channels consistently affected by interference and removes them from use.
a. Channel hopping
b. Channel aggregating
c. Channel blacklisting
d. Frequency aggregating

Answer: c. Channel blacklisting

Q5. The _____ supervises each node in the network and guides them on when and where to send packets.
a. Application manager
b. Network manager
c. Trust manager
d. None of these

Answer: b. Network manager

Q6. NFC is designed for use by devices within _ to each other?
a. Close proximity
b. No near contact
c. Both (a) and (b)
d. None of these

Answer: a. Close proximity

Q7. __ contain information which is readable by other devices, however it cannot read information itself.
a. Active NFC devices
b. Dumb NFC devices
c. Passive NFC devices
d. None of these

Answer: c. Passive NFC devices

Q8. NFC devices work on the principle of _______?
a. Magnetic introduction
b. Magnetic induction
c. Both (a) and (b)
d. None of these

Answer: b. Magnetic induction

Q9. Which of these is NOT a mode of operation NFC?
a. Server-to-Server
b. Peer-to-Peer
c. Read/Write
d. Card emulation

Answer: a. Server-to-Server

Q10. State whether the following statement is true or false
Statement: Paging in Bluetooth is the process of forming a connection between two Bluetooth devices.
a. True
b. False

Answer: a. True

Q11. There are __ modes of operation in Bluetooth.
a. 3
b. 4
c. 5
d. None of these

Answer: b. 4

Q12. Zwave uses __ for signaling and control?
a. Light
b. RF
c. Sound
d. None of these

Answer: b. RF

Q13. Which of the following is/are not a constraint on sensor nodes?
a. Must consume high power
b. Not be adaptive to the environment
c. Both (a) and (b)
d. None of these

Answer: c. Both (a) and (b)

Q14. _ are simply those that are unable to perform an operation; this could be because of power failure and environmental events.
a. Normal nodes
b. Failed nodes
c. Badly failed nodes
d. None of these

Answer: b. Failed nodes

Q15. Dumb behavior of sensor nodes is ___ in nature (as it is dependent on the effects of the environmental conditions).
a. Temporal
b. Spatial
c. Both (a) and (b)
d. None of these

Answer: a. Temporal

ASSIGNMENT-3 DETAILED SOLUTIONS