This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Data Link Layer – Data Link Control – Error Control ”.
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. Error control is mainly a function of the _______ layer.
- physical
- data link
- presentation
- application
B. data link
2. _______ is the handling of lost or damaged frames
- Line discipline
- Flow control
- Error control
- All of the above
C. Error control
3. Error control consists of _______.
- error detection
- error correction
- error modification
- all of the above
D. all of the above
4. Which data link layer function answers the question: How can errors be detected and handled?
- line discipline
- flow control
- error control
- session management
C. error control
5. Stop-and-wait ARQ is a _______ technique.
- line discipline
- flow control
- error control
- session management
C. error control
6. Go-back-n ARQ is a technique for _______
- line discipline
- flow control
- error control
- session management
C. error control
7. Selective-reject ARQ is a technique for _______.
- line discipline
- flow control
- error control
- session management
C. error control
8. Sliding window ARQ is usually implemented as _______
- selective reject ARQ
- go-back-n ARQ
- go-reject ARQ
- a or b
D. a or b
9. A sender using stop-and-wait ARQ sends data frames numbered _______
- 0 and 1 only
- sequentially, beginning with 0
- sequentially, beginning with 1
- the frames are not numbered
A. 0 and 1 only
10. A receiver using stop-and-wait ARQ sends ACK frames numbered _______
- 0 and 1 only
- sequentially, beginning with 0
- sequentially, beginning with 1
- the frames are not numbered
A. 0 and 1 only
11. A receiver using stop-and-wait ARQ sends NAK frames numbered _______
- 0 and 1 only
- sequentially, beginning with 0
- sequentially, beginning with 1
- the frames are not numbered
D. the frames are not numbered
12. A sender using stop-and-wait ARQ retransmits a frame when _______
- a NAK is received
- an ACK is received
- the timer expires
- a or c
D. a or c
13. Selective reject ARQ is a _______ error control method.
- stop-and-wait ARQ
- sliding window ARQ
- go-back-n ARQ
- any of the above
B. sliding window ARQ
14. Go-back-n ARQ is a _______ error control method
- stop-and-wait ARQ
- sliding window ARQ
- selective reject ARQ
- any of the above
B. sliding window ARQ
15. NAK frames are not numbered in _______
- stop-and-wait ARQ
- go-back-n ARQ
- selective reject ARQ
- all of the above
A. stop-and-wait ARQ
