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Computer Networks Objective Type Interview Questions with Answers | Page-6

26 Which transmission mode is used for data communication along telephone line ?
A Parallel
B Asynchronous
C Synchronous
D Serial

Answer: Option [D]
27 In fiber optic, the signal source is
A Light
B Radio
C Very low frequency
D Microwave frequency

Answer: Option [A]


28 Which of the following is not a guided medium ?
A Coaxial cable
B Twisted pair wire
C Fiber-optic cable
D Atmosphere

Answer: Option [D]
29 The inner core of an optical fiber is ______
A Copper
B Glass or plastic
C Liquid
D Bimetallic

Answer: Option [B]
30 Coaxial cables are widely used in
A Cable TV networks
B Telephone networks
C Both (A) and (B)
D Computer networks

Answer: Option [C]

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