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Q.

________ are used for short-range communications such as those between a PC and a peripheral device.

A

Radio waves

B

Microwaves

C

Infrared waves

D

none of the above

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MCQ

1.

A(n) _____ medium provides a physical conduit from one device to another.

A

guided

B

unguided

C

either (a) or (b)

D

none of the above

Discussion

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2.

The modern telephone network is now ________

A

digital

B

analog

C

digital as well as analog

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none of the above

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3.

The local loop has _______ cable that connects the subscriber telephone to the nearest end office.

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twisted-pair

B

coaxial

C

fiber-optic

D

none of the above

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4.

The protocol that is used for signaling in the telephone network is called ______

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POP

B

SSS

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SS7

D

none of the above

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5.

In _______ switching, the paths in the circuit are separated from one another spatially

A

time-division

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space-division

C

two-dimensional

D

three-dimensional

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