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Ethernet Standards Network + > Wan Technologies > Flashcards

Wan Technologies Flashcards

1
Q

T1

A

Transmission speed of 1.544 Mbps

North America DS1

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2
Q

T3

A

Transmission speed of 44.736 Mbps

North America DS3

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3
Q

BRI

A

128 Kbps - 2 B channels 64 Kbps each
2B + D
ISDN

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4
Q

PRI

A

1.544 Mbps - 2 B channels 64 Kbps each
23B + D
T1

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5
Q

E1

A

2.048 Mbps

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6
Q

E3

A

34.368 Mbps

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7
Q

Optical Carrier (OC) OC-3

A

155.52 Mbps

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8
Q

OC-192

A

9.953 Gbps

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9
Q

Synchronous Digital Heirarchy (SDH) is?

A

Synchronous Digital Heirarchy (SDH) is the european version of SONET.

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10
Q

What does SONET stand for?

A

Synchronous Optical Network.

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11
Q

What does OLT stand for?

A

Optical line termination

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12
Q

What does PON stand for?

A

Passive optical network is one in which unpowered optical splitters are used to split the fiber so it can service a number of loactions. it brings fiber to the curb, building or home. It’s passive because no power is used.

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13
Q

DWDM?

A

Is a form of multiplexing optical signals. It replaces SONET/SDH regenerators with erbium doped fiber amplifiers (EDFAs) and can also amplify the signal and enable it to travel a greater distance.

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14
Q

The main components of a DWDM system are?

A

Terminal multiplexer
Line repeaters
Terminal demultiplexer

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15
Q

An alternative to DWDM is?

A

CWDM - coarse wavelength-division multiplexing - used with television cabling.

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16
Q

What is DWDM?

A

DWDM is a form of multiplexing optical signals. Dense wavelength-division multiplexing. It replaces SONET/SDH regenerators with erbium doped fiber amplifiers (EDFAs) and also can amplify the signal and enable it to travel a greater distance.

17
Q

What is PAD?

A

PAD - Packet assembler/disassembler - Devise that makes it possible for each packet to take a different route to reach its destination during a single communication session. X.25. It’s required at each end of the X.25 connection.

Ethernet Standards Network + (2 decks)

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