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Network+ > Ethernet Standards > Flashcards

Ethernet Standards Flashcards

1
Q

100BASE-T specs

A

Speed: 100 Mbps
Signal: Baseband
Distance: 100m
Max computers: 1024/switch
Topology: star-bus, physical star, logical bus
Cable: Cat5 or better

quickly became able to full-duplex

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2
Q

Multispeed NIC

A

Able to transmit across various network speeds, typically auto sensing

will negotiate with switch to determine what speed to use

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3
Q

100BASE-FX Specs

A

Speed: 100 mbps
Signal: Baseband
Distance: 2 km
Max computers: 1024
topology: star-bus, physical star, logical bus
Cable: Multimode fiber (MMF), generally OM1 with ST or SC connectors

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4
Q

100BASE-SX

A

LED based alternative to 100BASE-FX

OM1 or OM2 fiber at 850 nm, used ST, SC, or LC

Backwards compatible with 10BASE-FL

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5
Q

Gigabit Ethernet

A

Also 1000BASE-T

Most common standard in offices today

4 pair cabling, max distance 100m

Cat 5e or Cat 6

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6
Q

1000BASE-SX

A

Speed: 1Gbps
Signal: Baseband (LED source)
Max length: 220 - 500 m (manufacturer dependent)
Cable: 850nm fiber (OM2 or better), commonly uses LC but sometimes SC

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7
Q

1000BASE-LX

A

Speed: 1Gbps
Signal: Baseband (laser source)
Max Length: 5 km (70km with repeaters)
Cable type: single mode fiber (OS1 or OS2), 1300 nm, commonly uses LC but sometimes SC

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8
Q

SFF Fiber Connectors

A

Small Form Factor

MT-RJ (Mechanical Transfer Registered Jack)
LC (Local Connector) - more popular in the US

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9
Q

PC connector

A

Physical Contact connector - fiber connection point (two pieces of fiber touch when inserted)

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10
Q

UPC connector

A

Ultra Physical contact connector - extensively polished to reduce signal loss

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11
Q

APC Connector

A

Angled physical contact connector - add an 8-degree angle to lower signal loss and prevent connection degradation from multiple insertions

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12
Q

Media Converter

A

Used to translate between network types (copper vs fiber)

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13
Q

Gigabit Interface Converter (transceiver/optic)

A

GBIC - removable module to plug a cable type into a device

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14
Q

SFP

A

Small form-factor pluggable

smaller transceivers, support the same networking standards as the GBIC transceivers

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15
Q

10GBASE-SR

A

Short Wavelength

Fiber type: MMF
Wavelength: 850 nm
Physical Layer: LAN
Max length: 33-400m, depending on cable type (OM1 just 33, OM4 400)

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16
Q

10GBASE-SW

A

Short Wavelength

Fiber type: MMF
Wavelength: 850 nm
Physical Layer: WAN/SONET
Max length: 33-400m, depending on cable type (OM1 just 33, OM4 400)

17
Q

10GBASE-LR

A

Long Wavelength

Fiber type: SMF
Wavelength: 1310 nm
Physical Layer: LAN
Max length: 10km

Most popular, least expensive 10GbE type

18
Q

10GBASE-LW

A

Long Wavelength

Fiber type: SMF
Wavelength: 1310 nm
Physical Layer: WAN/SONET
Max length: 10km

19
Q

10GBASE-ER

A

Extra Long Wavelength

Fiber type: SMF
Wavelength: 1550 nm
Physical Layer: LAN
Max length: 40km

20
Q

10GBASE-EW

A

Extra Long Wavelength

Fiber type: SMF
Wavelength: 1550 nm
Physical Layer: WAN/SONET
Max length: 40km

21
Q

10GBASE-T

A

Cable type: Cat 6/6a UTP - full duplex
Signal: Baseband
Max distance: 55m with Cat 6, 100m with Cat 6a

22
Q

Multi-Source Agreement

A

MSA

manfuactureres agree to make interoperable devices and standards, allows for 10 GbE equipment to communicate

23
Q

typical 10GbE Transceiver

A

SFP+

Enhanced small form-factor pluggable

24
Q

WDM

A

Wave division multiplexing

Allows one fiber cable to transmit and receive by using separate wavelengths (1310 nm send, 1550 nm receive)

25
Q

BiDi

A

Bidirectional transceivers, allow for single strand fiber transmission

26
Q

Backbone

A

A series of highspeed switches maintain central communication pathway (possible that servers also connect to this). Each floor/office/whatever distinction has a dedicated switch that connects to a backbone switch (through highspeed ports with fiber) and to every node on the floor/office/whatever

27
Q

40GBASE-T

A

Cat 8 UTP up to 30 m (fart)

Network+ (7 decks)

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