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

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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]

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