Computer Science - Networking

21. 

If the ASCII character G is sent and the character D is received, what type of error is this?

A. single-bit
B. multiple-bit
C. burst
D. recoverable

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

22. 

Which layer of OSI determines the interface of the system with the user?

A. Network
B. Application
C. Data-link
D. Session
E. None of the above

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

23. 

The transfer of data from a CPU to peripheral devices of a computer is achieved through

A. modems
B. computer ports
C. interfaces
D. buffer memory
E. None of the above

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

24. 

What is the number of separate protocol layers at the serial interface gateway specified by the X.25 standard?

A. 4
B. 2
C. 6
D. 3
E. None of the above

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

25. 

Many data communication networks have been established which provide a wealth of on-demand information services to people at home. What is the name of the system which provides an interactive, graphics-rich service that permits user to select what they want?

A. Teletex system
B. Fax system
C. Videotex system
D. Microwave system
E. None of the above

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.



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