WAN MCQs - Chapterwise Multiple Choice Questions & Answers on Wide Area Networks

Questions

1 Which device in communication satellite listens to some portion of a spectrum, amplifies the incoming signal, and then rebroadcasts it at another frequency ?

A Transponder

B Repeater

C Gateway

D None of these

View Answer Comment

Answer: Option [A]

2 Which device is used at a receiving end of an optical fiber ?

A Led

B Interferometer

C Photodiode

D None of these

View Answer Comment

Answer: Option [C]

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3 In optical fiber, light does not propagate best in ‘window’ centered at

A 850 nm

B 1300 nm

C 1500 nm

D None of these

View Answer Comment

Answer: Option [C]

4 Which of the following protocols cannot be used on satellite-based wide area networks ?

A CDMA

B Polling

C FDM

D None of these

View Answer Comment

Answer: Option [D]

Satellite based wide area networks use five classes of protocols polling, ALOHA, FDM, TDM, and CDMA.

5 How many 64-kbps digital voice channels can be encoded by a 50-Mbps transponder in satellite communication ?

A 320

B 640

C 800

D None of these

View Answer Comment

Answer: Option [C]

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