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MCQ

Q.

The United States is divided into many _______

A

LECs

B

LATAs

C

IXCs

D

none of the above

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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.

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

A

PSK

B

QAM

C

PCM

D

ASK

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3.

. The _______ address in the header of a packet in a datagram network normally remains the same during the entire journey of the packet

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source

B

destination

C

local

D

none of the above

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. In _______ there are no setup or teardown phases.

A

datagram switching

B

circuit switching

C

frame switching

D

none of the above

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5.

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

A

twisted-pair

B

coaxial

C

fiber-optic

D

none of the above

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