Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ELX > AA1 LT2 > Flashcards

AA1 LT2 Flashcards

1
Q

What factors determine the sizing of pathways for cables?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Where are in-floor conduit systems typically installed?

A

In concrete

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are cable trays and wireways used for?

A

To house, support and protect cables.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Do cable trays and wireways require dividing barriers?

A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

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

A

Vertically, bottom edge six inches from the floor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the purpose of a slotted wall duct?

A

Cable flexibility, neat installation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

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

A

Steel ‘messenger’ cable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

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

A

EMI can disrupt information flow and cause circuit failure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

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

A

Reduces performance degradation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the Type 66 connecting block system used for?

A

Connect voice or data wiring to customer premise equipment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What type of modular jack assemblies mount in BIX mounts?

A

Categories 3, 5, and 5e

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How are tip conductors identified?

A

Different colors from ring conductors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

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

A

Least amount necessary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What type of wire can modular jacks accommodate?

A

Both solid and stranded

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the first step in terminating modules?

A

Hold tool perpendicular to module and terminate.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

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

A

Building ground electrode system or accessible electrical service ground

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the minimum thickness of a Bus bar?

A

6 mm (0.23 in.)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Where should a grounding bus bar be installed?

A

Telecommunications closets with many connections

19
Q

What protective measures should be followed for backbone cable protection?

A

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

20
Q

What does the length test measure?

A

Ensure maximum link distance not exceeded

21
Q

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

A

NEXT, FEXT, ANEXT

22
Q

What is EL-FEXT?

A

Equal level far end crosstalk

23
Q

What are the two main components of a cable tracer?

A

Signal generator and signal receiver

24
Q

What is a wireway?

A

A trough with hinged or removable covers.

25
Q

What should be avoided when using nylon cable ties?

A

Tying too tightly around the cable bundle

26
Q

Why should staples not be used with Cat 5 cable?

A

Can cause crimped wire or insulation damage

27
Q

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

A

About 450 cm (18 in.)

28
Q

How many conductors may be terminated in each contact slot?

A

One.

29
Q

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

A

22-26 AWG solid copper wire

30
Q

What does the labeling on the termination block allow for?

A

Identification and easy visual inspection.

31
Q

What is the recommended maximum untwisting for Category 3 cable?

A

3 inches (7.62 cm)

32
Q

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

A

Near-end crosstalk (NEXT)

33
Q

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

A

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

34
Q

What do the data connector faceplates contain?

A

Both the data connector and one or more standard modular jacks

35
Q

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

A

6 AWG

36
Q

What is the minimum width of a Bus bar?

A

100 mm (4 in.)

37
Q

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

A

To ensure proper bonding and grounding

38
Q

What does the attenuation test measure?

A

Signal loss from end to end

39
Q

What is ANEXT?

A

Crosstalk between adjacent cables

40
Q

What is propagation delay?

A

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

41
Q

How can noise be mitigated in cabling?

A

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

42
Q

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

A

At least six times the internal diameter of the conduit.

43
Q

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

A

Signal loss in fibre, crosstalk in Cat 5

ELX (55 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions