Chapter 5 Modern Internet

Question 1

What cable did 100BaseT4 use?

Answer 1

CAT 3

Question 2

What cable did 100BaseTX use?

Answer 2

CAT 5

Question 3

Give a summary of 100BaseTX (100BaseT)

Answer 3

Speed: 100 Mbps
signal: Baseband
Distance: 100 Meters between the hub and switch
Node Limit: 1024 / hub or switch
Topology: Star bus, physical star, logical bus
Cable: CAT 5

Question 4

Give a summary of 100BaseFX (100BaseT)

Answer 4

Speed: 100 Mbps
signal: Baseband
Distance: 2 Km between the hub and switch
Node Limit: 1024 / hub or switch
Topology: Star bus, physical star, logical bus
Cable: MMF with ST or SC connectors

Question 5

What standard applies to 1000BaseT

Answer 5

802.3ab
cat5e or 6 UTP
RJ45 connector
max 100 meters
Four pair/full duplex

Question 6

What cable does 1000BaseCX use and what is its distance max

Answer 6

copper cable
Twin axial cable
25 meters max.

Question 7

What is the limit of a 150 Ohm cable

Answer 7

25 meters

Question 8

What does 1000 BaseSX use

Answer 8

Multi mode fiber
Max length of 220-500 m
850 nm wavelength
Common LC connector

Question 9

How does 1000BaseLX work

Answer 9

Single mode lasers shoot up to 5 KM

Question 10

What is a UPC connector

Answer 10

Ultra physical contact are polished extensively for a superiro finish. Very low signal loss

Question 11

What is an APC connector

Answer 11

Angled Physical Connectors add an 8 degree angle which lowers signal loss further. Does not degrade from multiple insertions

Question 12

What is a SFP connector

Answer 12

Small form factor pluggable take up less space and support the same networking standards as a GBIC

Question 13

What is the formula for naming convention ‘10GBaseT’

Answer 13

# is the speed of transmissions
'Base' Signal Type (baseband)
x = the type of fiber (not always)
y = Physical Layer Signaling Standard
 - R = LAN based
- W = SONET / WAN based
#Basexy
10BaseF

Question 14

Give an overview of 10GBaseSy

Answer 14

Short Wave length (850 nm)

Multimode Fiber

Question 15

Give an overview of 10GBaseLy

Answer 15

Long wavelength (1310 nm)
Single-mode fiber
Max Distance 10 Km

Question 16

What is 10GBaseLR used for

Answer 16

Connects ethernet LANS to SONET equipment
Single-mode fiber
1310 wavelength
LC connector
max distance 10 km

Question 17

Give an overview of 10GBaseEy

Answer 17

Extra-long wavelength (1550 nm)
Single Mode fiber
Max Distance 40 Km

Question 18

Give an overview of 10GBaseL4

Answer 18

Four lasers at 1300 nm over legacy fiber
FDDI grade multimode
Max distance 300 m or 10 km over single mode fiber

Question 19

Give an overview of 10GBaseLRM

Answer 19

Long wavelength signal (1310 nm)
Legacy multimode fiber
Max distance 220 m

Question 20

Give an overview of 10GBaseZR

Answer 20

1550 nm wavelength
Single-mode fiber
Max distance 80 km
Ethernet LAN and SONET/WAN
LC or SC

Question 21

Give an overview of 10GBaseT

Answer 21

CAT6 or 6A
Max distance 55 m (6) or 100 m (6a)
Rj-45 Plug

Question 22

Give an overview of 10GBaseSR/SW

Answer 22

Multimode fiber
850 nm wavelength
Max distance 26-300 m

Question 23

Give an overview of 10GBaseER/EW

Answer 23

Single Mode fiber
1550 nm
LC or SC connector
max distance 40 km