Top 350+ Solved Wireless Sensor Networks (WSN) MCQ Questions Answer
Q. Following characteristics of wireless sensor networks point to the need for a specialized MAC protocol
a. most sensor nodes are idle much of the time
b. in-network processing can greatly improve bandwidth utilization
c. issues of energy efficiency, scalability and robustness remain paramount
d. all of above
Q. The main goal of the ___________is to reduce energy waste caused by idle listening, collisions, overhearing and control overhead
a. s-mac protocol
b. ieee802.15.4 standard
c. both
d. ieee802.15.3 standard
Q. The S-MAC protocol includes following major component
a. periodic listen and sleep
b. collision avoidance
c. message passing
d. all of above
Q. The S-MAC protocol includes following major component
a. periodic listen and sleep
b. message passing
c. a and b both
d. none of above
Q. In the S-MAC protocol, ___________is designed to reduce energy consumption during the long idle time when no sensing events happen, by turning off the radio periodically
a. periodic listen only
b. periodic listen and sleep
c. message passing
d. periodic sleep only
Q. __________in S-MAC is similar to the using an RTS/CTS exchange
a. collision avoidance
b. overhearing avoidance
c. both
d. one of above
Q. Following aspects of the energy cost in a sensor network make it challenging to reason about optimizing energy
a. multi-hop communication can be more efficient than direct transmission
b. when a node transmits, all other nodes within range can hear
c. neither a nor b
d. a and b both
Q. select the correct statement
a. since the nodes operate independently, their clocks may not be synchronized with one another
b. for time synchronization, the wired protocols assume the existence of highly accurate master clocks on some network nodes such as skew clock
c. a and b both
d. neither a nor b
Q. select the correct statement
a. since the nodes operate independently, their clocks may not be synchronized with one another
b. for time synchronization, the wired protocols assume the existence of highly accurate master clocks on some network nodes such as atomic clock
c. a and b both
d. neither a nor b
Q. The latency in channel can be decomposed into following components
a. send time
b. access time and receive time
c. propagation time
d. alln of above
Q. The latency in channel can be decomposed into following components
a. send time and access time
b. receive time and propagation time
c. a and b both
d. neither a nor b
Q. The Send time is
a. this is the time taken by the sender to construct the message
b. this is the delay incurred while waiting for access to the transmission channel due to contention, collisions etc
c. this is the time for message to travel across the channel to the destination node
d. this is the time for the network interface on the receiver side to get the message and notify the host of its arrival
Q. The Access time is
a. this is the time taken by the sender to construct the message
b. this is the delay incurred while waiting for access to the transmission channel due to contention, collisions etc
c. this is the time for message to travel across the channel to the destination node
d. this is the time for the network interface on the receiver side to get the message and notify the host of its arrival
Q. The Propagation time is
a. this is the time taken by the sender to construct the message
b. this is the delay incurred while waiting for access to the transmission channel due to contention, collisions etc
c. this is the time for message to travel across the channel to the destination node
d. this is the time for the network interface on the receiver side to get the message and notify the host of its arrival
Q. The Receive time is
a. this is the time taken by the sender to construct the message
b. this is the delay incurred while waiting for access to the transmission channel due to contention, collisions etc
c. this is the time for message to travel across the channel to the destination node
d. this is the time for the network interface on the receiver side to get the message and notify the host of its arrival