Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2521: What is the primary goal of CSMA?
- A: To increase bandwidth
- B: To avoid retransmissions
- C: To minimize collisions and improve performance
- D: To reduce power consumption
View Answer
C
Q2522: What does CSMA require a station to do before sending data?
- A: Check destination address
- B: Send a broadcast message
- C: Sense the medium
- D: Encrypt the data
View Answer
C
Q2523: Fill in the blank: CSMA follows the principle of '______ before transmit'.
- A: speak
- B: move
- C: listen
- D: go
View Answer
C
Q2524: How does CSMA detect whether the medium is busy or idle?
- A: By polling the receiver
- B: Using a timer
- C: By sensing the medium
- D: Through IP checks
View Answer
C
Q2525: In the CSMA protocol, if the medium is busy, what action does a station take?
- A: Wait until idle
- B: Force transmit anyway
- C: Change its address
- D: Disconnect from the network
View Answer
A
Q2526: What is the vulnerable time in CSMA dependent on?
- A: Frame size
- B: Transmission delay
- C: Propagation delay
- D: Encryption time
View Answer
C
Q2527: Fill in the blank: CSMA is based on a simple idea— ______ the medium before transmission.
- A: encrypting
- B: checking
- C: ignoring
- D: sensing
View Answer
D
Q2528: Which of the following is a behavior model in CSMA?
- A: Three persistence
- B: Binary backoff
- C: Exponential scan
- D: Slotted randomization
View Answer
A
Q2529: In CSMA, which persistence strategy sends data immediately if the medium is idle?
- A: 1-persistent
- B: Non-persistent
- C: p-persistent
- D: Backoff
View Answer
A
Q2530: What does a non-persistent CSMA station do when it finds the medium busy?
- A: Wait a random time before trying again
- B: Keep sensing continuously
- C: Send anyway immediately
- D: Abort transmission
View Answer
A