Computer Science - Networking

21. 

An example of an analog communication method is

A. laser beam
B. microwave
C. voice grade telephone line
D. All of the above
E. None of the above

Answer: Option D

Explanation:

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

22. 

Which of the following layer protocols are responsible for user and the application programme support such as passwords, resource sharing, file transfer and network management?

A. Layer 7 protocols
B. Layer 6 protocols
C. Layer 5 protocols
D. Layer 4 protocols
E. None of the above

Answer: Option A

Explanation:

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

23. 

What frequency range is used for FM radio transmission?

A. Very Low Frequency : 3 kHz to 30. kHz
B. Low Frequency : 30 kHz to 300 kHz
C. High Frequency : 3 MHz to 30 MHz
D. Very High Frequency : 30 MHz to 300 MHz
E. None of the above

Answer: Option D

Explanation:

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

24. 

Transmission of computerised data from one location to another is called

A. data transfer
B. data flow
C. data communication
D. data management
E. None of the above

Answer: Option C

Explanation:

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

25. 

Compared to analog signals, digital signals

A. allow faster transmission
B. are more accurate
C. both (a) and (b)
D. All of the above
E. None of the above

Answer: Option C

Explanation:

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