AA1 LT2

Question 1

What factors determine the sizing of pathways for cables?

Answer 1

Cable quantity, size, bend radius requirements, and allowance for growth

Question 2

Where are in-floor conduit systems typically installed?

Answer 2

In concrete

Question 3

What are cable trays and wireways used for?

Answer 3

To house, support and protect cables.

Question 4

Do cable trays and wireways require dividing barriers?

Answer 4

Yes

Question 5

How should the plywood be installed on the walls of the telecommunications closet?

Answer 5

Vertically, bottom edge six inches from the floor

Question 6

What is the purpose of a slotted wall duct?

Answer 6

Cable flexibility, neat installation

Question 7

What is one method for supporting vertical backbone cable runs over long distances?

Answer 7

Steel ‘messenger’ cable

Question 8

What is electromagnetic interference (EMI) and how can it affect a circuit?

Answer 8

EMI can disrupt information flow and cause circuit failure

Question 9

What is the importance of keeping connections to a minimum in installations?

Answer 9

Reduces performance degradation

Question 10

What is the Type 66 connecting block system used for?

Answer 10

Connect voice or data wiring to customer premise equipment

Question 11

What type of modular jack assemblies mount in BIX mounts?

Answer 11

Categories 3, 5, and 5e

Question 12

How are tip conductors identified?

Answer 12

Different colors from ring conductors

Question 13

How much cable should be untwisted to make a connection in order to maintain data rate?

Answer 13

Least amount necessary

Question 14

What type of wire can modular jacks accommodate?

Answer 14

Both solid and stranded

Question 15

What is the first step in terminating modules?

Answer 15

Hold tool perpendicular to module and terminate.

Question 16

What are the two primary choices for grounding in a building?

Answer 16

Building ground electrode system or accessible electrical service ground

Question 17

What is the minimum thickness of a Bus bar?

Answer 17

6 mm (0.23 in.)

Question 18

Where should a grounding bus bar be installed?

Answer 18

Telecommunications closets with many connections

Question 19

What protective measures should be followed for backbone cable protection?

Answer 19

Avoid routing near electrical power cables, route near the middle of the building, install lightning protection, ground other cables

Question 20

What does the length test measure?

Answer 20

Ensure maximum link distance not exceeded

Question 21

What are the three types of crosstalk that concern cable installers?

Answer 21

NEXT, FEXT, ANEXT

Question 22

What is EL-FEXT?

Answer 22

Equal level far end crosstalk

Question 23

What are the two main components of a cable tracer?

Answer 23

Signal generator and signal receiver

Question 24

What is a wireway?

Answer 24

A trough with hinged or removable covers.

Question 25

What should be avoided when using nylon cable ties?

Answer 25

Tying too tightly around the cable bundle

Question 26

Why should staples not be used with Cat 5 cable?

Answer 26

Can cause crimped wire or insulation damage

Question 27

How much spare wire should you leave at outlets and connection points?

Answer 27

About 450 cm (18 in.)

Question 28

How many conductors may be terminated in each contact slot?

Answer 28

One.

Question 29

What type of wire is the Type 66 Connecting Block designed to terminate?

Answer 29

22-26 AWG solid copper wire

Question 30

What does the labeling on the termination block allow for?

Answer 30

Identification and easy visual inspection.

Question 31

What is the recommended maximum untwisting for Category 3 cable?

Answer 31

3 inches (7.62 cm)

Question 32

At Category 5e levels, what must the connectors be specially configured to reduce?

Answer 32

Near-end crosstalk (NEXT)

Question 33

After trimming off excess jacket, what is the next step in terminating modules?

Answer 33

Press protective cap onto top of module, until it snaps.

Question 34

What do the data connector faceplates contain?

Answer 34

Both the data connector and one or more standard modular jacks

Question 35

What is the normal minimum AWG size for copper conductors in commercial buildings?

Answer 35

6 AWG

Question 36

What is the minimum width of a Bus bar?

Answer 36

100 mm (4 in.)

Question 37

What is the purpose of installing a bonding conductor along each backbone cable pathway?

Answer 37

To ensure proper bonding and grounding

Question 38

What does the attenuation test measure?

Answer 38

Signal loss from end to end

Question 39

What is ANEXT?

Answer 39

Crosstalk between adjacent cables

Question 40

What is propagation delay?

Answer 40

The time required for a signal to travel from one end of the transmission path to the other.

Question 41

How can noise be mitigated in cabling?

Answer 41

Separate Voice and Data Cross-connect fields, No Split Pairs, Maintain Cable Pair Twist

Question 42

What is the recommended inside radius of a bend in conduit?

Answer 42

At least six times the internal diameter of the conduit.

Question 43

What problems can arise if nylon cable ties are wrapped too tightly?

Answer 43

Signal loss in fibre, crosstalk in Cat 5