Data Transmission Network - Multiple Choice Questions and Answers | Page-11

Questions

51 What is the minimum number of wires needed to send data over a serial communication link layer ?

A 1

B 2

C 3

D 4

Answer: Option [B]

52 The velocity of transmission of energy in free space is given by:

A C=f/1

B C=f/2

C C=f

D None of the above

Answer: Option [A]

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53 A teleprocessing system may consist of

A User systems

B Communication systems

C Computer center systems

D All of the above

Answer: Option [D]

54 The ground wave eventually disappears as one moves away from the transmitted because of

A Interference from the sky above

B Loss of line of sight condition

C Attenuation of energy by the ground

D Maximum single hop distance limitation

Answer: Option [C]

55 Microwave links are generally preferred to coaxial cable for television transmission because

A They are cheaper

B Of their greater bandwidths

C They have less overall phase distortion

D Of their relative immunity to impulse noise

Answer: Option [B]