Ch. 5 - Network Cabling

Question 1

Most common twisted pair types

Answer 1

Category (cat) 3, 5, 5e, 6, 6a, and 7

CAT 5e or higher used in modern LANs

Question 2

Wiring standard specification

Answer 2

TIA/EIA 568

Question 3

T568A cable pinout

Answer 3

green/ green orange/ blue blue/ orange brown/ brown

Question 4

T568B cable pinout

Answer 4

orange/ orange green/ blue blue/ green brown/ brown

Question 5

power for standard PoE devices

Answer 5

15.4 watts

Question 6

for newer PoE+ devices

Answer 6

25.5 watts

Question 7

(802.3at standard)

Answer 7

PoE+

Question 8

PoE requires ____ or better cabling

Answer 8

Cat 5

Question 9

100 Mbps, 100m distance, cat 5 or better cabling, 2 pair used

Answer 9

100Base-t Fast Ethernet

Question 10

1000 Mbps, 100m distance, cat 5 or better cabling (5e preferred), 4 pair used

Answer 10

1000Base-T Gigabit Ethernet

Question 11

10,000 Mbps, 100m distance, cat 6a or 7 or better cabling (7 preferred), 4 pair used

Answer 11

10GBase-T 10-Gigabit Ethernet

Question 12

SMF (Single Mode Fiber) core size

Answer 12

8-10 microns

Question 13

MMF (Multimode Fiber) core size

Answer 13

50 or 62.5 microns

Question 14

MMF connectors are classified by

Answer 14

Classified by the number of fibers

Question 15

SMF connectors are classified by

Answer 15

Classified by size and shape of the ferrule

Question 16

Most common 1.25-mm fiber connector is

Answer 16

LC (local connection)

Question 17

Two 2.5-mm connectors are the

Answer 17

SC (standard connector) and ST (straight tip)

Question 18

1000Base-LX distance

Answer 18

550m for MMF 5000m for SMF

Question 19

1000Base-SX distance

Answer 19

Up to 550, depending on modal bandwidth and fiber core diameter

Question 20

10GBase-SR distance

Answer 20

Up to 300, depending on modal bandwidth and fiber core diameter

Question 21

10GBase-LW

Answer 21

10,000m

Question 22

10GBase-LR

Answer 22

10,000m

Question 23

10GBase-ER

Answer 23

40,000m

Question 24

10GBase-EW

Answer 24

40,000m