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MCQ

Q.

In an HFC network, the upstream data are modulated using the _______ modulation technique

A

QAM

B

QPSK

C

PCM

D

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MCQ

1.

The standard for data transmission over an HFC network is called _______

A

MCNS

B

DOCSIS

C

CMTS

D

ADSL

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2.

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

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3.

______ cable consists of an inner copper core and a second conducting outer sheath.

A

Twisted-pair

B

Coaxial

C

Fiber-optic

D

Shielded twisted-pair

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4.

Which of the following primarily uses guided media?

A

cellular telephone system

B

local telephone system

C

satellite communications

D

radio broadcasting

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5.

In _______, the resources need to be reserved during the setup phase; the resources remain dedicated for the entire duration of data transfer phase until the teardown phase.

A

datagram switching

B

circuit switching

C

frame switching

D

none of the above

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