04 - Modern Ethernet

Question 1

100BaseT Summary

Answer 1

Speed: 100 Mbps
Distance: 100 meters
Cable: Cat 5 or better

Question 2

1000BaseT Summary

Answer 2

Speed: 1 Gbps
Distance: 100m
Cable: Cat 5e or better

Question 3

1000BaseLX Summary

Answer 3

Speed: 1 Gbps
Distance: 5km
Cable: SMF with LC or SC

Question 4

1000BaseSX Summary

Answer 4

Speed: 1 Gpbs
Distance: 220-500m
Cable: MMF with SC

Question 5

10GBaseT Summary

Answer 5

Speed: 10 Gbps
Distance: 55m w/ Cat 6 - 100m w/ Cat 6a

Question 6

Fiber-optic SFF connectors

Answer 6

Small Form Factor

• MT-RJ (Mechanical Transfer Registered Jack)
• LC
• the most popular connectors

Question 7

Two types of Fiber connections

Answer 7

• PC (Physical Contact) because 2 pieces of fiber touch when inserted
• flat-surface - left a little gap between the connection points due to imperfections in the glass

Question 8

Two types of PC connections

Answer 8

UPC - Ultra Physical Contact - polished to reduce signal loss

APC - Angled Physical Contact - add an 8-degree angle to the curved end, lowering signal loss

Question 9

GBIC

Answer 9

Gigabit Ethernet Interface Converter

- modular ports for Media Converters

Question 10

SFP

Answer 10

Small Form-factor Pluggable

- Smaller version of GBIC

Question 11

WDM

Answer 11

Wave Division Multiplexing

- allows multiple signals to travel on a single fiber

Question 12

BiDi

Answer 12

Bidirectional Transceivers

- single optical port designed to send on one wavelength and receive on another

Question 13

What standard does IEEE 802.3ab describe?

Answer 13

1000BaseT

Question 14

What is the big physical difference between 1000BaseSX and 100BaseFX?

Answer 14

1000BaseSX uses the SC connector exclusively.

Question 15

What is the standard connector for the 10 GbE fiber standard?

Answer 15

There is no standard.