Cables

Question 1

Used in plenum spaces

Answer 1

Plenum cabling

Question 2

Adhere to a fire safety standard of NFPA 90A
Made from fire retardant plastic which is a low smoke polyvinyl chloride and fluorinated ethylene polymer.
Less flexible

Answer 2

Plenum cabling

Question 3

2 types of Category 6 cables

Answer 3

Cat6

Cat6a (augmented)

Question 4

Cable that is backwards compatible, has stricter specifications, and a faster speed over ethernet lines.

Answer 4

Cat6

Question 5

How fast is Cat6 cables?

Answer 5

10GBASE - T

Question 6

2 types of Category 5 cables

Answer 6

Cat5

Cat5e (extended)

Question 7

What are the two speeds of cat5 cables?

Answer 7

100BASE-T

1000BASE-TX

Question 8

Which cat5 is guaranteed for a distance of 100m?

Answer 8

1000BASE-TX

Question 9

Cable internal Scheme:

gGoBbObrBr

Answer 9

T-568A

Question 10

Cable internal scheme:

oOgBbGbrBr

Answer 10

T-586B

Question 11

Equal but opposite signals travel on each pair member

Answer 11

Differential signaling

Found on twisted pair cabling

Question 12

What is balanced pair operation

Answer 12

Differential signaling

receiver examines differences between cables, determines what is noise and cancels it

Question 13

How is unshielded twisted pair protected from emi?

Answer 13

plastic sheath only

Question 14

How is shielded twisted pair protected from emi?

Answer 14

Jacket
shield braid
shield foil
may have a ground wire

Question 15

data transmission by using pulses of light

Answer 15

fiber optics

Question 16

What is the basic design of a fiber optic cable?

Answer 16

Outer Jacket
Strength member
Coating
Cladding
Core

Question 17

Which type of fiber optic cable is more expensive, but better for longer distances?

Answer 17

Single mode

Question 18

Which type of fiber optic cable has sharp refraction by cladding?

Answer 18

Multi-mode step index

Question 19

What are the three types of fiber optic cabling?

Answer 19

Single mode
multi-mode: step index
Multi-mode: graded index

Question 20

What is the design of a coaxial cable?

Answer 20

Outer jacket
Braided shield
Foil Shield
Dielectric
Center Conductor

Question 21

What are the 2 types of coaxial cables?

Answer 21

RG-6

RG-59

Question 22

This cable is suitable for radio
Commonly used by cable companies
Suitable for longer distances and higher bandwidth
Has a larger core

Answer 22

Coaxial RG-6

Question 23

This cable has shorter distances and lower bandwith
Is commonly used as a patch cable between devices
Has a smaller core

Answer 23

Coaxial RG-59

Question 24

Benefits of coaxial cable

Answer 24

Multiple channel support
lower error rates than twisted cable
high capacity for bandwith
rigid design

Question 25

Limitations of coaxial cable

Answer 25

signal leakage
noise from external fields
ground loops

Question 26

Cable type:
Unshielded
10/100 Mbps
100 MHz
Not good for large corporations
Prone to EMI and cross talk

Answer 26

Cat5

Question 27

Cable type:
Unshielded
1000 Mbps/ 1Gbps
100 MHz
More expensive
Less cross-talk

Answer 27

Cat5e

Question 28

Cable type:
Shielded or unshielded
1000 Mbps/ 1Gbps
>250 MHz
Length limit of 55 m  or 33 m

Answer 28

Cat6

Question 29

Cable type:
Shielded
10000 Mbps/ 10 Gbps
500 MHz

Answer 29

Cat6e