3. Networking Connectors and Wiring Standards

Question 1

Why would a network administrator use plenum-rated cable during an installation? (Choose two).

A. Low combustion temperature
B. High combustion temperature
Reduces toxic gas released during a fire
D. Is not susceptible to any interference

Answer 1

B, C.

Plenum-rated means that the cable’s coating doesn’t begin burning until a much higher temperature of heat, doesn’t release as many toxic fumes as PVC when it does burn, and is rated for use in air plenums that carry breathable air, usually as nonenclosed fresh-air return pathways that share space with cabling.

Question 2

Which of the following Ethernet unshielded twisted-pair cabling types is/are commonly used?

A. 10BaseT
B. 100BaseTX
C. 1000BaseTX
D. All of the above

Answer 2

D.

UTP is commonly used in twisted-pair Ethernet like 10BaseT, 100BaseTX, 1000BaseTX, and so on.

Question 3

In which of the following categories is UTP cable not rated?

A. Category 2
B. Category 3
C. Category 5e
D. Category 9

Answer 3

D.

Unshielded twisted-pair has standards from Category 2 through 8 for use on Ethernet networks.
There is no Category 9 defined.

Question 4

What type of connector does UTP cable typically use?

A. BNC
B. ST
C. RJ-45

Answer 4

C.

UTP usually connects with RJ-45.
You use a crimper to attach an RJ connector to a cable.

Question 5

Which of the following provides the longest cable run distance?

A. Single-mode fiber
B. Multimode fiber
C. Category 3 UTP
D. Coax

Question 6

You need to crimp on a connector using an RJ-45 connector. Whitch pin-out configuration would you use to connect a host to a switch?

A. UTP
B. Straight-through
C. Crossover
D. Rolled

Question 7

Why is fiber-optic cable immune to electromagnetic interference (EMI) and radio frequency interference (RFI)?

A. Because it transmits analog sygnals using electricity.
B. Because it transmits analog sygnals using light impulses.
C. Because it transmits digital sygnals using light impulses.
D. Because it transmits digital sygnals using electricity.

Question 8

What type of cable transmits lights from end to end?

A. Coax
B. Fiber-optic
C. UTP
D. Category 2

Question 9

What is the main difference between single-mode fiber (SMF) and multimode fiber (MMF)?

A. Electrical signals
B. Number of light rays
C. Number of digital signals
D. That signal-mode can be run a shorter distance.

Question 10

What type of cable should be used if you need to make a cable run longer than 100 meters?

A. Category 5e
B. Category 6
C. Fiber-optic
D. Coaxial

Question 11

Which of the following are fiber-optic connectors? (Choose 3)

A. BNC
B. ST
C. RJ-11
D. SC
E. LC
F. RJ-45

Question 12

You need to connect 2 devices on a network and they need to send voice traffic. Which of the following cables will you use?

A. Cat 3
B Cat 5
C. CSU/DSU
D. Rolled

Question 13

How many hosts on a half-duplex segment can talk at one time?

A. Zero
B. One
C. Two
D. Unlimited

Question 14

On wich type of cable does EMI have the least effect?

A. Coax
B. Fiber-optic
C. UTP
D. STP

Question 15

How many devices can be connected to a full-duplex segment?

A. Zero
B. One
C. Two
D. Four

Question 16

How many wires are used in a 100 =BaseTX UTP transmission?

A. Two
B. Four
C. Six
D. Eight

Question 17

A crossover cable is used to connect all of the following except_______________.

A. Switch to switch
B. Host to host
C. Hub to switch
D. Host to switch

Question 18

How is T1 crossover cable wired?

A. Pins 1, 2, 4, and 5 are connected to 4, 5, 1, and 2.

B. Pins 2, 3, 4, and 5 are connected to 4, 5, 1, and 2.

C. Pins 1, 2, 4, and 5 are connected to 3, 4, 5, and 6.

D. Pins 4, 5, 6, and 7 are connected to 4, 5, 1, and 2.

Question 19

The purpose of the demarcation point is to separate the customer from whom?

A. The branch office
B. Headquarters
C. The data center
D. The service provider

Question 20

You need to make a T568B cable for a Fast Ethernet link. How many pairs will u use?

A. One
B. Two
C. Three
D. Four