Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2561: Fill in the blank: The ______ helps to space transmissions and avoid collisions in CSMA/CA.
- A: Frame header
- B: Interframe Space
- C: Preamble
- D: Trailer
View Answer
B
Q2562: What is the purpose of the Contention Window in CSMA/CA?
- A: To store transmitted data
- B: To determine frame size
- C: To define waiting time before transmission
- D: To encrypt the signal
View Answer
C
Q2563: Which CSMA version is preferred in wireless networks due to its avoidance mechanism?
- A: CSMA
- B: CSMA/CD
- C: CSMA/CA
- D: ALOHA
View Answer
C
Q2564: Fill in the blank: In CSMA/CA, the station waits for a random backoff time defined by the ______.
- A: Preamble
- B: Frame size
- C: Contention Window
- D: Header
View Answer
C
Q2565: Which of the following is used by CSMA/CA to confirm successful transmission?
- A: Ping signal
- B: Acknowledgement signal
- C: Jamming signal
- D: Response code
View Answer
B
Q2566: In CSMA/CA, what happens if no acknowledgement is received?
- A: Transmission is considered successful
- B: Another station transmits
- C: The frame is retransmitted
- D: A jamming signal is sent
View Answer
C
Q2567: Which mechanism helps reduce chances of simultaneous transmission in CSMA/CA?
- A: Contention Window
- B: Jamming frame
- C: Sequence Number
- D: Synchronous ID
View Answer
A
Q2568: The Interframe Space in CSMA/CA is used to ______.
- A: Identify packet type
- B: Measure bandwidth
- C: Separate successive transmissions
- D: Control encryption
View Answer
C
Q2569: Fill in the blank: CSMA/CA is an effective protocol for ______ where collision detection is not practical.
- A: Optical fiber
- B: Ethernet
- C: Wireless networks
- D: Wired LANs
View Answer
C
Q2570: Which one of the following strategies is NOT part of CSMA/CA?
- A: Interframe Space
- B: Address Resolution Protocol
- C: Contention Window
- D: Acknowledgement
View Answer
B