Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2591: Fill in the blank: CSMA/CA introduces delay after detecting idle channel using the ______.
- A: ACK frame
- B: Contention Timer
- C: Interframe Space
- D: Encryption key
View Answer
C
Q2592: The doubling of wait time in CSMA/CA helps in ______.
- A: Collision resolution
- B: Increasing speed
- C: Encoding data
- D: Channel encryption
View Answer
A
Q2593: Which strategy in CSMA/CA defers access even when the channel appears idle?
- A: Contention Window
- B: Encryption Buffer
- C: Acknowledgement
- D: Interframe Space
View Answer
D
Q2594: In controlled access, what must stations do before sending data?
- A: Request access
- B: Transmit freely
- C: Encrypt the message
- D: Receive acknowledgement
View Answer
A
Q2595: Which of the following is NOT a controlled access method?
- A: Token Passing
- B: Carrier Sensing
- C: Polling
- D: Reservation
View Answer
B
Q2596: Controlled-access methods include ______, polling, and token passing.
- A: Selection
- B: Reservation
- C: Prioritization
- D: Queuing
View Answer
B
Q2597: Fill in the blank: In the ______ method, a station needs to reserve before sending data.
- A: Reservation
- B: Token Passing
- C: Polling
- D: Free Access
View Answer
A
Q2598: What is the purpose of the reservation frame in the reservation method?
- A: Transmit data
- B: Check encryption
- C: Make a reservation
- D: Encrypt packets
View Answer
C
Q2599: In the reservation method, what precedes data frames in each interval?
- A: Data packet
- B: Reservation frame
- C: Acknowledgement frame
- D: Polling signal
View Answer
B
Q2600: Polling works best in which kind of topology?
- A: Mesh
- B: Ring
- C: Bus
- D: Star
View Answer
D