Quiz-3

1) Channel hopping is performed at which layer of HART?

1. Physical 
2. Data link
3. Network
4. Application

2) Which of the following modulations is utilized by Zwave?

1. Amplitude Phase Shift Keying(APSK)
2. Quadrature Phase Shift Keying(QPSK)
3. Frequency Shift Keying(FSK)
4. Gaussian Frequency Shift Keying(GFSK)

3) Near Field Communication (NFC) is based on the principle of

1. Reflection
2. Refraction
3. Magnetic induction
4. Electrical Conductance 

4) Inquiry is run by one Bluetooth device to 

1. Form a connection with another device 
2. Discover other devices near it
3. Participate in the network
4. Isolate from the network  

6) The sniff mode in Bluetooth is use for

1. Actively transmitting or receiving data
2. Sleeping and only listening for transmissions at a set interval
3. Switching in power-saving mode where a device sleeps for a defined period and then returns back to active mode
4. Deactivating the slave

 6) WASN stands for:

1. Wireless and Sensor networks 
2. Wired and Sensor networks
3. Wireless Ad-hoc Sensor Networks
4. None of these 

7) This process of bypassing radio dead spots in Z wave is doing using a message called 

1. Healing 
2. Beacon
3. Probe 
4. None of these 

8) Which channel encoding is used in Z-wave:

1.  RZ
2. NRZ
3. Manchester
4. None of these

9) Event aware topology management in WSNs include:

1. Timely detection of an event of interest 
2. Monitoring the event 
3. Adapting with the changes of event state
4. All of these 

10) The WSN nodes are prone to :

1. Malicious attacks 
2. Eavesdropping 
3. Interference 
4. All of these 

11) In a wireless sensor network, a node which are unable to perform an operation, because of power failure and environmental effects in known as 

1. normal node
2. selfish node
3. failed node 
4. badly failed node 

12) Bluetooth is a technology with:

1. Full duplex links
2. Half duplex links
3. Both the above 
4. None of the above 

13) Which of the following is a scheme for re-establishing the connectivity in the presence of dumb nodes in a wireless sensor networks?

1. INTSEM
2. CoRD
3. SMAC
4. DutyCon

14)The Hart protocol was designed for:

1. Home automation networking
2. Networked Smart Field devices
3. Vehicular networking
4. All of these

15) In Near Field Communication, the active devices are able to 

1. only collect information
2. only transmit information
3. collect and transmit information
4. only receive information

 

  Explanations