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DataComm Ch14 Quiz

This uses a 53 byte cell size to send data.

X.25

Frame relay

ATM

MPLS

This technology uses PPPoE to authenticate.

Dial-up

ISDN

Cable

DSL

This type of DSL has faster download as compared to upload speeds.

SDSL

ADSL

VDSL

This device is used to combine multiple signals into one.

Modem

Router

Multiplexer

CSU/DSU

This protocol is used to transfer signals over the backbone of the Internet over fiber.

SONET

DSL consists of all the following advantages over dial-up except for ___________ .

Speed

Throughput

End-user security

Which protocol allows for greater throughput by assigning each signal a separate wavelength?

DWDM

OC-3

ATM

Which device allows for a digital signal to be sent across spans which are outside the physical limits of the wire?

Amplifier

Repeater

Multiplexer

Exchanger

This device is used to change a digital signal to an analog signal and vice versa.

Repeater

Switch

Modem

Router

You need to provide at least 50 Mbps to your office. What is the minimum one-line solution you could use?

OC1

OC3

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