CH.6/5

Question 1

What does fiber optic cabling consists of? Pg.280/281

Answer 1

A thin flexible glass or plastic fiber covered by a rubberized outer coating. It has transmission speeds of 100 Mbps-10Gbps and a maximum distance of several miles.

Question 2

T/F. Fiber optic is vulnerable to EMI and wire-tapping because of it’s use of electric voltage to transmit data. Pg.281

Answer 2

False. Fiber uses light pulses to transmit it’s data.

Question 3

Even though fiber is have faster transmission rates and is less vulnerable to electrical interference, why is not being used more in local area networks(LANs). Pg.281

Answer 3

Cost. Fiber is very expensive

Question 4

Name the modes that fiber comes in. Pg281

Answer 4

Single mode and Multimode

Question 5

What are some traits of SMF? Pg.281/282

Answer 5

Can transmit up to 10Gbps for up to 40KM(25.85 miles),depending on the standard
Uses a single light source(typically a laser) that travels straight down the fiber cable
Supports lower bandwidth at longer distances
Commonly used as the backbone of cabling

Question 6

What are some traits of MMF? Pg.281

Answer 6

Typically uses LED, it permits multiple modes of light to propagate through the cable(which shortens cable distances but delivers more available bandwidth.
MMF allows light to travel down multiple modes(paths0 at the same time, as the light travels down the fiber it bounces off the cable walls, weakening as it transmit.
Used in gigabit/Ethernet(laser source)
Transmit 10Gbps for up to 550M(1084 feet)

Question 7

RG-6 Pg282

Answer 7

coax cable, 304 meters-max, digital cable/sat tv

Question 8

RG-8 pg.282

Answer 8

coax, 10base5-ethernet, 10Mbps-max speed, 500 meters-max distance, Thicknet

Question 9

RG-58

Answer 9

Coax-10base2, 10Mbps max spd, 185meters max dis, thinnet

Question 10

RG-59

Answer 10

coax, up to 228 meters, analog cable tv

Question 11

cat3 UTP

Answer 11

10baseT, 10Mbps max spd, up to 100 meters

Question 12

cat5 UTP/STP

Answer 12

100baseT, 100Mbps, up to 100meters, 100mbps and less uses 2 pairs of wires

Question 13

cat5e UTP

Answer 13

1000baseT, 1Gbps, up to 100 meters, 1Gbps and higher use four pairs of wires

Question 14

cat6 UTP

Answer 14

10GbaseT, 10Gbps, up to 55 meters, can support 1Gbps upto 100 meters

Question 15

cat6a UTP

Answer 15

10GbaseT, 10Gbps, 100 meters max

Question 16

cat7 UTP

Answer 16

10GbaseT, 10Gbps, 100 meters max, every wire pair is individually shielded

Question 17

MMF fiber

Answer 17

1000BaseLX/1000BaseSX, 1Gbps, up to 550 meters

For fiber, max length depends on fiber size and quality

Question 18

MMF /10GbaseSR or 10GbaseSW

Answer 18

10Gbps max spd, up to 300 meters max

Question 19

SMF

Answer 19

10CBaseER 10GBaseEW, 10Gbps max spd, 40 KM max distance

Question 20

What are some fiber-optic connector types? Pg.283/284

Answer 20

ST-straight tip(developed by AT&T)
SC-subscriber connector aka square connector
LC-local connector(developed by Lucent Technologies

Question 21

How are networking components used? Pg.284

Answer 21

They provide connectivity to the network, make the network larger and provide auxiliary services to end users.

Question 22

What are some connectivity devices? Pc. 285-287

Answer 22

Modems, acess points, hubs. patch panels, bridges, switches, and routers.

Question 23

T/F A firewall can be a hardware or software solution for security.g.288

Answer 23

True