This set of Data communication and Networking Multiple Choice Questions and Answers (MCQs) focuses on “Data link Protocols – Asynchronous protocols ”.
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. Asynchronous protocols are widely used in _______
- repeaters
- routers
- modems
- bridges
C. modems
2. _______ frame the data unit in asynchronous transmission
- Error control bits
- Start and stop bits
- Flags
- ACK characters
B. Start and stop bits
3. _______ layer protocols contain rules for line discipline, flow control, and error handling
- Data link
- Network
- Physical
- Transport
A. Data link
4. The gaps between characters in asynchronous transmission are _______ in length
- variable
- fixed-size
- exactly one character
- one bit
A. variable
5. Since asynchronous protocols are _______, they are being replaced by synchronous protocols
- expensive to implement
- inherently slow
- require complex hardware
- require complex software
B. inherently slow
6. XMODEM, BLAST, and Kermit are all _______ protocols
- character-oriented
- bit-oriented
- synchronous protocols
- asynchronous protocols
D. asynchronous protocols
7. In an XMODEM exchange, the sender can receive _______ frame
- an ACK
- a NAK
- a CAN
- any of the above
D. any of the above
8. The most widely used asynchronous protocol is _______
- XMODEM
- YMODEM
- BLAST
- Kermit
D. Kermit
9. In XMODEM and Kermit, the sender waits for _______ before transmission begins.
- an ACK
- a NAK
- a CAN
- any of the above
B. a NAK
10. Kermit is a _______
- terminal emulation program
- file transfer protocol
- LAN
- a and b
D. a and b
11. Kermit uses the _______ character to notify the receiver that a control character is next
- DEL
- DLE
- #
- Ctrl
C. #
