Brainscape's Knowledge GenomeTM

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


See full index

4th Year, Week 3 (VDV and Door Security) > VDV Applications > Flashcards

VDV Applications Flashcards

1
Q

Noise intensity is measured in ____.

A

Decibels

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

The fall protection threshold is __ feet.

A

6’

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

The four ladder duty ratings are ?

A 
Type IAA (375lb)
Type 1 (250lb)
Type 2 (225lb)
Type 3 (200lb)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Any chemical on the jobsite is required to have a(n) ____, which contains data about safe use of the chemical.

A

SDS (Safety Data Sheet)

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

Solid State Devices can be damaged or destroyed by a static discharge as little as ___ V.

A

10V

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

In 1977, ____ was created to bring together OEM’s, designers, installers, and distributers to standardize the industry.

A

BICSI

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

What are the two types of Security Systems?

A
  1. ) Access Control Systems

2. ) Surveillance Systems

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

A(n) ____ is a network of hardwired or wireless video monitors that transmits sound and video, usually for large groups of people located in a common area.

A

Audio-Visual System.

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

What are the two basic cable types?

A
  1. ) Copper

2. ) Fiber-optic

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

A(n) ____ is a device that connects telecom devices to form a wireless network.

A

Wireless Access Point (WAP)

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

WAP’s are easily installed with Cat ___ or better.

A

5e

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

What factors are considered when choosing cable paths?

A
  1. ) Physical Layout
  2. ) Capacity
  3. ) Installation Environment
  4. ) Support System
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

110 Blocks are preferred by manufacturers because they have lower ____ and are more ____.

A

Lower Noise and More Compact.

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

A 110 type cross-connect can be arranged for use with either ____ or ____.

A

Jumper Wires or Patch Cords.

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

Insulation Displacement with a punchdown tool makes terminating faster and provides ____ and ____ results.

A

Consistent and Repeatable

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

All test equipment must be used per the ____ from the ____.

A

Written Instructions from the OEM.

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

____ is the reduction of power in any type of signal.

A

Attenuation.

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

____ is a type of interference caused by signals from adjacent circuits.

A

Crosstalk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

____ is the measure of signal interference as measured at the far end of the cable.

A

Far End Crosstalk (FEXT)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Attenuation to crosstalk ratio (ACR) is the ratio of ____ to ____.

A

Attenuation to Near End Crosstalk (NEXT)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

A ____ is an analytical tool that can be created by certain types of test instruments and is used to certify all the fibers in a specific cable.

A

Cable Loss Report

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

The higher the category of copper cabling, the ____ the twisting of the conductors is.

A

Tighter.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

A tightly twisted wire pair ensures that both wires experience the exact same ____ and ____ of external noise.

A

Shape and Volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Twisted pair conductors are called the ____ and ____.

A

Tip and Ring.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

In normal four pair cables, the white of the twisted pair is usually the ____.

A

Tip.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Substituting a higher rated cable will cost ____ than a specified lower-rated cable.

A

More.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is the maximum length of a horizontal cabling run?

A

100 Meters (about 300’)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Does the maximum length of a cabling run include patchcords at the end?

A

Yes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

In copper communication systems, ____ are used to send signals.

A

Voltage Levels

30
Q

What are the two main types of fiber?

A

Single-mode and Multi-mode

31
Q

The construction of a fiber strand includes 6 layers. They include…….

A

Core, Cladding, Coating, Buffer, Strength Member, Jacket.

32
Q

T/F: The glass in a fiber core and its cladding refract light in the same way.

A

False. Cladding refracts it while the core is designed to carry light waves.

33
Q

T/F: Fuse connectors have extremely low signal loss due to the integrity of the fusion splice and the factory-polished end.

A

True.

34
Q

The measure of how well a fiber-optic cable works is the amount of ____, or signal loss, as light travels through it.

A

Attenuation

35
Q

T/F: Warranty claims on fiber-optic cables is extremely rare.

A

True.

36
Q

Abbreviations and symbols are used throughout prints and provide a clear and concise method to convey information without _____.

A

Cluttering the prints.

37
Q

T/F: Symbols on a print are typically standard, such as one regulated by ANSI.

A

True.

38
Q

A person who who has the delegated authority to determine, mandate, and enforce code requirements established by governing bodies is called the ____.

A

AHJ

39
Q

What is the purpose of standards?

A

To make an industry uniform and to elevate the quality of work.

40
Q

In the new MasterFormat spec system, Electrical and Communications are what divisions?

A 
Electrical = 26
Communications = 27
41
Q

In the new Masterformat spec system, each section has a ___-digit reference number representing ___ levels of detail.

A

6-digit reference number,

3 levels of detail.

42
Q

ANSI/TIA-____ deals with Administration (Labeling)

A

606

43
Q

ANSI/TIA-____ deals with Grounding/Bonding.

A

607

44
Q

Grounding/Bonding VDV equipment is essentially an extension of the ____.

A

Equipment Grounding Conductor.

45
Q

A ____ is a temporary, unwanted voltage in an electrical circuit.

A

Transient Voltage.

46
Q

A system of all the grounding conductors in a building or structure that are bonded together would be called the grounding ____ system.

A

Electrode.

47
Q

IBT stands for ____. It is a device connecting bonding conductors from the communications system to the grounding electrode system.

A

Intersystem Bonding Termination.

48
Q

The conductor connecting the IBT to the grounding electrode system must be a __ AWG at minimum.

A

6

49
Q

The run of horizontal cable from the patch panel to the wall jack would be called the ____ link.

A

Permanent

50
Q

The run of horizontal cable that consists of a ‘disposable’ patchcord between the patch panel and the switch called the ____.

A

Channel link.

51
Q

The Permanent link can be no longer than ___ meters.

A

90 Meters.

52
Q

____ is the process of sealing any penetration in a fire rated building element in order to maintain its rating.

A

Firestopping.

53
Q

____ cable is used in present day for CATV (Cable TV) and Satellite TV. It’s used with ____ connectors.

A

RG-6 cable and F-type.

54
Q

____ cable is used for old TV’s and for security surveillance systems. It’s used with ____ connectors.

A

RG-59 cable and BNC.

55
Q

A ____ is a test instrument designed to identify and locate a copper conductor or cable.

A

Toner.

56
Q

What are the two different parts of a toner?

A

Signal generator and probe.

57
Q

T/F: Wiremap testers can be used on active telephone circuits.

A

False. Phone rings can be ~90V, which can damage the sensitive electronics.

58
Q

A Certification Test must be done to obtain a ____ from the OEM.

A

Warranty.

59
Q

A ____ splice is formed by applying heat to the ends of two different fibers in order to form one continuous strand.

A

Fusion splice.

60
Q

Mechanical fiber splices have a usually have a greater degree of signal loss, up to ___ dB.

A

1 Decibel

61
Q

Housing enclosures usually have what 3 things?

A
  1. ) Strain-relief attachments for cable jackets.
  2. ) Storage space for excess fiber
  3. ) A way to mount fibers as to align them with patch cord ends.
62
Q

T/F: Rather than software to keep track of fiber pathways, a carefully maintained spreadsheet is adequate.

A

True.

63
Q

What does VFL stand for?

A

Visual Fault Locator

64
Q

What are three reasons for testing and certifying fiber optic systems?

A
  1. ) Verification of Operation
  2. ) Compliance with specs
  3. ) Certification of performance
65
Q

What determines the acceptable loss for a fiber optic link?

A

The loss budget.

66
Q

When it comes to the strength of an electrical signal, 0 dB would be very ____.

A

Loud.

67
Q

When it comes to audible noise in your ear, 0 dB would be very ____.

A

Quiet.

68
Q

____ fiber connectors are used in high speed cellular telephone applications.

A

APC

69
Q

In applications where the full capability of the fiber is required, a(n) ____ connector can be used.

A

APC

70
Q

Jumper wires between 110 blocks and switches are also called ____ wires.

A

Cross-Connect

71
Q

What does APC stand for?

A

Angled Physical Contact

4th Year, Week 3 (VDV and Door Security) (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions