Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2791: CSMA/CD is essential in Ethernet because the medium is:
- A: Unshared
- B: Privately switched
- C: Shared and can cause collisions
- D: Fully duplexed
View Answer
C
Q2792: Which of the following is **not** a part of CSMA/CD?
- A: Carrier Sensing
- B: Collision Detection
- C: Token Passing
- D: Backoff Algorithm
View Answer
C
Q2793: Fill in the blank: Ethernet is based on the _______ network principle.
- A: circuit
- B: switching
- C: broadcast
- D: point-to-point
View Answer
C
Q2794: In CSMA/CD, when a collision occurs, the station must:
- A: Shut down
- B: Quit the network
- C: Stop transmission and wait for a random time
- D: Continue transmitting
View Answer
C
Q2795: Fill in the blank: The main reason for using CSMA/CD in Ethernet is to avoid ______.
- A: delay
- B: broadcast
- C: bandwidth wastage
- D: collision
View Answer
D
Q2796: What is the role of the backoff algorithm in CSMA/CD?
- A: To increase signal speed
- B: To decrease bandwidth
- C: To handle errors
- D: To manage retransmission timing
View Answer
D
Q2797: Which protocol uses the "listen before talk" principle?
- A: CSMA/CD
- B: TCP/IP
- C: FTP
- D: HTTP
View Answer
A
Q2798: Which of the following describes 1-Persistent CSMA best?
- A: The device always waits
- B: The device transmits immediately when the channel is idle
- C: The device uses a timer
- D: The device never checks the channel
View Answer
B
Q2799: Which of the following access methods is **not** used in LAN environments?
- A: CSMA/CD
- B: Token Passing
- C: FDMA
- D: CSMA/CA
View Answer
C
Q2800: In 1-Persistent CSMA, what happens if the channel is busy?
- A: The device waits and retries immediately after it is idle
- B: The device stops
- C: The device picks a random backoff time
- D: The device restarts
View Answer
A