This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Data link Protocols – Synchronous protocols – Character-Oriented Protocol ”.
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. Control information in a system using _______ protocol are characters from an existing character encoding system
- an asynchronous
- a character-oriented
- a bit-oriented
- b and c
B. a character-oriented
2. BSC operates in the _______ mode.
- simplex
- half-duplex
- full-duplex
- duplex
B. half-duplex
3. BSC uses _______ for flow control.
- stop-and-wait ARQ
- go-back-n ARQ
- selective-reject ARQ
- any of the above
A. stop-and-wait ARQ
4. In BSC, an _______ means that a frame was accepted.
- ACK
- ACK0
- ACK1
- b and c
D. b and c
5. Control characters for a character-oriented protocol can be represented by _______.
- one character
- two characters
- three characters
- any of the above
D. any of the above
6. A BSC frame starts with a _______ character.
- SOH
- SYN
- BCC
- STX
B. SYN
7. In BSC, the character following the _______ character is data.
- SOH
- SYN
- BCC
- STX
D. STX
8. In BSC, the header follows the _______ character.
- SOH
- SYN
- BCC
- STX
A. SOH
9. In BSC, the BCC character can follow the _______ character.
- ITB
- ETX
- ETB
- any of the above
D. any of the above
10. How many ETX characters are in one message?
- 1
- 2
- 3
- depends on how the message is split
A. 1
11. How many ETB characters in one message?
- 1
- 2
- 3
- depends on how the message is split
D. depends on how the message is split
12. What is the purpose of a BSC control frame?
- establishes connections
- flow and error control
- terminates connections
- all of the above
D. all of the above
13. When message data is mistaken for control data, this is called a lack of _______.
- synchronization
- data transparency
- flow control
- line discipline
B. data transparency
14. How does the BSC protocol handle message data that looks like control data?
- byte stuffing
- bit stuffing
- frame mapping
- byte mapping
A. byte stuffing
15. In BSC, a region of message data can be made transparent by inserting a _______ character before the STX character and before the ETX, ITB, or ETB character
- SYN
- SOH
- DLE
- BCC
C. DLE
