Chapter 5

Question 1

Describe 100BaseT4.

Answer 1

Used CAT 3 cable

Question 2

Describe 100BaseTX.

Answer 2

used CAT 5 cable

• dominant 100Mbps ethernet standard “fast ethernet”
• 100m between hub and node

Question 3

Describe 100BaseFX.

Answer 3

• 100Mbps using fiber optic
• SC and ST connectors
• max 2km

Question 4

Describe 1000BaseT

Answer 4

uses four-pair utp/stp max length 100

Question 5

What is IEEE 802.3ab

Answer 5

most widely implemented 1000BaseT standard.

Question 6

What is IEEE 802.3z?

Answer 6

Contained the 1000Base X standards CX, SX, LX

Question 7

Describe 1000BaseCX.

Answer 7

• uses twinaxial cable

- 150 ohm, cable length of 25 meters.

Question 8

Describe 1000BaseSX

Answer 8

• multimode
• 220m - 500m cable length
• 850 nm LED
• commonly use LC connectors

Question 9

Describe 1000BaseLX.

Answer 9

• single mode (laser) cables

- make 5km; with repeaters 70 km

Question 10

What is SFF?

Answer 10

Small form factor connectors.

• MTRJ: Mechanical Transfer Registered Jack
• Local connector(LC)

Question 11

What is GBIC?

Answer 11

• Gigabit interface converter.

- modlar port; can pull out RJ-45 port replace with SC

Question 12

Describe 10 Gigabit ethernet.

Answer 12

-has some fiber standards and two copper standards.
-Format of 10GBasexy
-“x” is the type of fiber usually
“y” is either “r” for lan based signaling or “W” for Sonet/Wan based signalling.

Question 13

Describe 10GBaseSY

Answer 13

• multimode, 850nm, max length 300m

- SR = LAN; SW-SONET/WAN

Question 14

Describe 10GBaseLY

Answer 14

-longwave(1310nm) single mode max 10km

Question 15

Describe 10GbaseEY

Answer 15

-extra longwave(1550nm), single mode, max length 40km

Question 16

Describe 10GBaseL4

Answer 16

• four lasers at 1300nm wavelength over legacy fiber.
• up to 300 meters on FDDI grade multimode
• 10km over single mode cable

Question 17

Describe 10GBaseLRM

Answer 17

-up to 220 meters.

Question 18

Describe 10GBaseZR

Answer 18

• not a part of IEEE standards
• 1550nm over singlemode
• 80km
• LAN and SONET

Question 19

Descrbe 10GBaseT

Answer 19

• 10Gbps
• CAT6 max cable length of 55 meters
• CAT6a, 100 meters.

Question 20

What is a MSA?

Answer 20

multisource agreements transceivers plugs into 10 GBE equipment