Data Link Control MCQs - Data Communication and Networking

In this section of Data Communication and Networking – Data Link Control MCQ (Multiple Choice) Based Questions and Answers,it cover the below lists of topics, All the Multiple Choice Questions and Answers (MCQs) have been compiled from the book of Data Communication and Networking by The well known author behrouz forouzan.

This Section covers below lists of topics.

Error control , error detection and error correction MCQs.
Stop-and-Wait ARQ MCQs.
Go-Back-N ARQ MCQs.
Selective Repeat ARQ MCQs.
Flow control mechanisms MCQs.
HDLC protocol MCQs

PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE

1. In a Go-Back-N ARQ, if the window size is 63, what is the range of sequence numbers?

0 to 63
0 to 64
1 to 63
1 to 64

2. In Go-Back-N ARQ, if frames 4, 5, and 6 are received successfully, the receiver may send an ACK _______ to the sender.

5
6
7
any of the above

3. ARQ stands for _______.

Automatic repeat quantization
Automatic repeat request
Automatic retransmission request
Acknowledge repeat request

4. For Stop-and-Wait ARQ, for 10 data packets sent, _______ acknowledgments are needed

exactly 10
less than 10
more than 10
none of the above

5. HDLC is an acronym for _______

High-duplex line communication
High-level data link control
Half-duplex digital link combination
Host double-level circuit

6. Data link control deals with the design and procedures for ______ communication

node-to-node
host-to-host
process-to-process
none of the above

7. ______ in the data link layer separates a message from one source to a destination, or from other messages going from other sources to other destinations

Digitizing
Controlling
Framing
none of the above

8. In _______ framing, there is no need for defining the boundaries of frames.

fixed-size
variable-size
standard
none of the above

9. In ________ framing, we need a delimiter (flag) to define the boundary of two frames.

fixed-size
variable-size
standard
none of the above

10. _________framing uses two categories of protocols: character-oriented and bit-oriented.

Fixed-size
Variable-size
Standard
None of the above

11. In a ________ protocol, the data section of a frame is a sequence of characters.

bit-oriented
character-oriented
either (a) or (b)
none of the above

12. In a _________ protocol, the data section of a frame is a sequence of bits.

byte-oriented
bit-oriented
either (a) or (b)
none of the above

13. In _ protocols, we use

character-oriented; byte stuffing
character-oriented; bit stuffing
bit-oriented; character stuffing
none of the above

14. Byte stuffing means adding a special byte to the data section of the frame when there is a character with the same pattern as the ______

header
trailer
flag
none of the above

15. In protocols, we use

byte-oriented; bit stuffing
character-oriented; bit stuffing
bit-oriented; bit stuffing
none of the above

16. Bit stuffing means adding an extra 0 to the data section of the frame when there is a sequence of bits with the same pattern as the ________

header
trailer
flag
none of the above

17. _______ control refers to a set of procedures used to restrict the amount of data that the sender can send before waiting for acknowledgment

Flow
Error
Transmission
none of the above

18. ____ control refers to methods of error detection and correction

Flow
Error
Transmission
none of the above

19. The Simplest Protocol and the Stop-and-Wait Protocol are for ______ channels

noisy
noiseless
either (a) or (b)
neither (a) nor (b)

20. The Stop-And-Wait ARQ, Go-Back-N ARQ, and the Selective Repeat ARQ are for ______ channels

noisy
noiseless
either (a) or (b)
neither (a) nor (b)

21. The ____ Protocol has neither flow nor error control

Stop-and-Wait
Simplest
Go-Back-N ARQ
Selective-Repeat ARQ

22. The _______Protocol has flow control, but not error control

Stop-and-Wait
Simplest
Go-Back-N ARQ
Selective-Repeat ARQ

23. The _______Protocol has both flow control and error control

Stop-and-Wait
Go-Back-N ARQ
Selective-Repeat ARQ
both (b) and (c)

24. In the _____ Protocol, the sender sends its frames one after another with no regard to the receiver

Stop-and-Wait
Simplest
Go-Back-N ARQ
Selective-Repeat ARQ

25. In the _____ Protocol, the sender sends one frame, stops until it receives confirmation from the receiver, and then sends the next frame.

Stop-and-Wait
Simplest
Go-Back-N ARQ
Selective-Repeat ARQ

26. The ___Protocol, adds a simple error control mechanism to the _Protocol

Stop-and-Wait ARQ; Stop-and-Wait
Go-Back-N ARQ; Stop-and-Wait
Selective Repeat ARQ; Go-Back-N ARQ
none of the above

27. In the _________Protocol, if no acknowledgment for a frame has arrived, we resend all outstanding frames.

Stop-and-Wait ARQ
Go-Back-N ARQ
Selective-Repeat ARQ
none of the above

28. In the _________ protocol we avoid unnecessary transmission by sending only frames that are corrupted

Stop-and-Wait ARQ
Go-Back-N ARQ
Selective-Repeat ARQ
none of the above

29. Both Go-Back-N and Selective-Repeat Protocols use a _________

sliding frame
sliding window
sliding packet
none of the above

30. In Go-Back-N ARQ, if 5 is the number of bits for the sequence number, then the maximum size of the send window must be _____

31. In Go-Back-N ARQ, if 5 is the number of bits for the sequence number, then the maximum size of the receive window must be _____

32. In Selective Repeat ARQ, if 5 is the number of bits for the sequence number, then the maximum size of the send window must be _____

33. In Selective Repeat ARQ, if 5 is the number of bits for the sequence number, then the maximum size of the receive window must be _____

34. High-level Data Link Control (HDLC) is a _______ protocol for communication over point-to-point and multipoint links.

bit-oriented
byte-oriented
character-oriented
none of the above

35. The most common protocol for point-to-point access is the Point-to-Point Protocol (PPP), which is a _________protocol

bit-oriented
byte-oriented
character-oriented
none of the above

36. ______ control refers to a set of procedures used to restrict the amount of data that the sender can send before waiting for acknowledgment.

Flow
Error
Transmission
none of the above

37. _________control in the data link layer is based on automatic repeat request, which is the retransmission of data.

Flow
Error
Transmission
none of the above

38. In Stop-and-Wait ARQ, we use sequence numbers to number the frames. The sequence numbers are based on __________arithmetic

modulo-2
modulo-4
modulo-m
none of the above

39. In Stop-and-Wait ARQ, the acknowledgment number always announces in ______ arithmetic the sequence number of the next frame expected

modulo-2
modulo-4
modulo-m
none of the above

40. In the Go-Back-N Protocol, if the size of the sequence number field is 8, the sequence numbers are in ________ arithmetic

modulo-2
modulo- 8
modulo-256
none of the above

41. Stop-and-Wait ARQ is a special case of Go-Back-N ARQ in which the size of the send window is 1.

2
1
8
none of the above

42. In _________, the station configuration is unbalanced. We have one primary station and multiple secondary stations.

43. In _________, the configuration is balanced. The link is point-to-point, and each station can function as a primary and a secondary

44. In PPP, the ________ is responsible for establishing, maintaining, configuring, and terminating links

NCP
LCP
CHAP
PAP

45. In PPP, ________ is a simple authentication procedure with a two-step process:

NCP
LCP
CHAP
PAP

46. In PPP, _______ is a three-way hand-shaking authentication protocol in which the password is kept secret; it is never sent online.

NCP
LCP
CHAP
PAP

Data Communication and Networking – Data Link Control MCQs