Top 350+ Solved Wireless Sensor Networks (WSN) MCQ Questions Answer
Q. Timeout-MAC (T-MAC) letting the nodes timeout when nothing happens
a. during their sleep periods.
b. during their active periods.
c. before the active period.
d. after the active perio
Q. Berkeley MAC (B-MAC) was developed to tackle the problems of
a. t-mac
b. s-mac
c. lpl
d. all of above
Q. Long preamble used in Berkeley MAC (B-MAC) has long preamble consist of
a. application data
b. other payloads
c. has fixed length and may carry sender, receiver, and packet size information
d. has variable length and may carry sender, receiver, and packet size information
Q. Long preamble used in Berkeley MAC (B-MAC) has to be send at least for duration of
a. wakeup time
b. less than wakeup time
c. sleeping time
d. less than sleeping time
Q. The MAC protocol,
a. guarantee that the transmission will be successful
b. does not guarantee that the transmission will be successful
c. guarantee that the retransmission will be successful
d. none of above
Q. incorrect statement is
a. the lower the received signal strength indicator -rssi, better the signal.
b. link quality indicator (lqi) positive number ranging from approximately 110 to 50
c. link quality indicator (lqi) positive number ranging from approximately 0 to 100
d. packet reception ratio measured in fraction
Q. The packet reception ratio (PPR) is depicted against the distance
a. at long distance between nodes, the prr increases
b. at short distance between nodes, the prr decreases
c. at long distance between nodes, the prr decreases
d. ppr is independent of distance between nodes
Q. In the clear communication zone communication is
a. at least a 90%
b. almost impossible, but interference might still occur.
c. interference free.
d. from almost 100% to 0%
Q. The purpose of error control is to
a. guarantee communication is error-free & in-sequence,
b. guarantee communication is duplicate-free, and loss-free
c. guarantee communication is error-free and loss-free
d. a and b both
Q. Backward Error Control –
a. should not try to prevent errors but only discover errors.
b. should try to prevent errors
c. should try to prevent errors and avoid discovery of errors
d. none of the above
Q. Forward Error Control-
a. should not try to prevent errors but only discover errors.
b. should try to prevent errors only
c. should try to prevent errors and avoid discovery of errors
d. attempts to prevent errors instead of only detecting them
Q. Select correct statement for naming
a. name reveal a about the position of the node and its role.
b. name reveal about the position of the node, but not about the role.
c. name does not reveal anything about the position of the node. reveal something about the role.
d. name does not reveal anything about the position of the node as well as its role.
Q. Select correct statement for addressing of node
a. address reveal a about the position of the node and its role.
b. address reveal about the position of the node, but not about the role.
c. address does not reveal anything about the position of the node. reveal something about the role.
d. address does not reveal anything about the position of the node as well as its role.
Q. Centralized Topology Control
a. is very hard to perform
b. requires significant communication overhead
c. react well in case of changes.
d. all are leading nodes
Q. Distributed Topology Control
a. is very simple to perform
b. requires less time to stabilize
c. more flexible, situation-aware
d. less precise than centralized control.