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Electronic Systems Integration and Automation > OCP B Exam Review > Flashcards

OCP B Exam Review Flashcards

1
Q

An electric strike that opens in case of a fire alarm, sprinkler alarm, or loss of AC power is called _____.

A

fail-safe

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2
Q

HDTV uses _____ compression and encoding for transmission.

A

MPEG-2

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3
Q

In a commercial application, an HVAC system may be interfaced with the fire alarm system to _____.

A

shut down the HVAC system in case of a fire

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4
Q

The most common form of distortion created by an amplifier is _____ distortion.

A

harmonic distortion

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5
Q

Virtually all domestic electrical services in the world are:

A

single-phase

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6
Q

Select a _____ filter if it is required that all frequencies except those in a limited range must pass.

A

band-pass

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7
Q

The fact that a CCTV or MATV signal will fade over distance and may no longer be able to drive a monitor or receiver is called _____.

A

attenuation

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8
Q

The purpose of a noise gate is to _____ very low-level input channels.

A

turn-off

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9
Q

The aspect ratio refers to a display’s width measurement to its height measurement. The aspect ratio of HDTV is _____.

A

16:9

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10
Q

The goal of sound masking is to _____.

A

reduce ambient noise

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11
Q

Video cameras typically use _____ for power.

A

12-volt DC

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12
Q

When equipment in a sealed rack must be kept cooler than the room ambient temperature, a(n) _____ is used.

A

fan trays

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13
Q

A signal level meter (SLM) is normally used to display _____.

A

signal strength

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14
Q

Speaker cables should not be twisted much, because twisting _____.

A

can cause interference

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15
Q

_____ light is not visible to humans.

A

Infrared

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16
Q

Initial individual component tests are usually performed in the _____ phase of installation.

A

construction

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17
Q

The first step you should take when troubleshooting a system problem is _____.

A

identify the symptoms

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18
Q

When working with CCTV and video cameras, the reflectivity of an object is its _____.

A

luminance

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19
Q

_____ are optional devices that are used to insulate a rack from the floor or other building surfaces to prevent the rack from being inadvertently grounded to the building structure or other grounds.

A

Isolation pads

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20
Q

A hum or hiss in a sound system is usually a(n) _____ problem.

A

Wiring

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21
Q

The most common problem encountered when using data cabling (Cat 5e, Cat 6, etc.) for transporting video is _____.

A

delay skew

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22
Q

If a flown speaker has a four-point suspension, at least _____ point(s) must be used.

A

two

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23
Q

Access control systems are defined as the computers and application software along with all locking devices and coded credentials used to _____.

A

authorize passage through entry control systems

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24
Q

Analog television produces a picture with an aspect ratio (width-to-height) of _____, whereas digital television aspect ratio is _____.

A

4:3 and 16:9

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25
Q

Sound levels greater than _____ dB can cause permanent hearing damage.

A

120 dB

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26
Q

The goal of commissioning is to make sure that _____.

A

systems perform as intended

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27
Q

The ideal input (AC) power will be of constant _____.

A

voltage

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28
Q

The key to integration is the _____ among the user and components of the integrated systems.

A

Communication

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29
Q

The purpose of Acoustic Treatments is _____?

A

to improve the sound quality within a space

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30
Q

Use a(n) _____ to view the video from two cameras on a single monitor.

A

video multiplexers

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31
Q

A cabling scheme that has been designed to handle both analog and digital video but has a critical length requirement is _____.

A

DVI-I

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32
Q

A hand/finger geometry reader is a type of _____.

A

biometric authentication

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33
Q

Color TV video signals must carry three basic types of information: _____.

A

Brightness, color, and synchronization

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34
Q

In the _____ layer OSI model, the layer that defines the physical and electrical specifications of the actual connection of a device is layer 1.

A

Physical Layer

35
Q

The height of a sound wave above and below the zero point is called _____.

A

amplitude

36
Q

The _____ is the person, company or agency responsible for planning and supervising the commissioning of a system.

A

commissioned authority

37
Q

Use a _____ to mount monitors and controls used in a video production studio.

A

console

38
Q

Sound, in its most basic form, is _____.

A

vibrations

39
Q

The grounded electrode system includes the grounded electrode conductor, the grounding electrode and the _____.

A

ground

40
Q

The only difference between a monochrome image and a black and white image is that the black and white image contains _____.

A

shades of gray

41
Q

The telephone (USOC) connector that was designed to allow alarm systems to automatically interrupt an existing telephone connection, seize that telephone line, and then automatically dial emergency services is the _____.

A

RJ-31X jack

42
Q

When two or more persons or vehicles pass through an entry point with only one authorized entrant, it is referred to as _____.

A

tailgating or piggybacking

43
Q

Entry control systems are usually powered by _____.

A

12VDC or 24VDC

44
Q

If your home theater has risers, it is very important to make sure the steps are visible with _____ protect your guests from stumbling in the dark to

A

safety lighting

45
Q

One common element of all microphones is the _____, which reacts to sound pressure by producing vibrations.

A

diaphragm

46
Q

The term bonding involves connecting all noncurrent carrying metal parts of the electrical system and equipment to _____.

A

grounding system

47
Q

Which of the following video formats uses a compressed format?

A

Windows Media Video

48
Q

A frequency of 10 million hertz would be expressed as _____.

A

10 megahertz (MHz)

49
Q

A charge-coupled device (CCD) chip contains imaging elements called _____.

A

photosites or pixels

50
Q

In a Home Theater, the paint should not be a gloss or eggshell finish, but a _____ or _____ finish.

A

matte or flat

51
Q

Surge protection devices limit peak surge voltages and _____ to ground.

A

redirect or divert

52
Q

The most common microphone pickup pattern is the _____.

A

cardioid microphone

53
Q

While a local area network (LAN) is the physical grouping of network devices, a _____ is a logical grouping of network devices.

A

VLAN

54
Q

A piezoelectric speaker is most likely used for ______ applications.

A

low power

55
Q

A wireless network can be established by use of wireless access point transceivers using the specifications of _____.

A

IEEE 802.11

56
Q

Any home theater with more than one row of seating is going to need a(n) _____ so the heads of the people on the front row are not blocking the view for the seats behind them.

A

riser

57
Q

Training is designed to transfer _____ to the trainee.

A

knowledge

58
Q

Use a(n) _____ to block higher frequency noise from affecting sensitive electronic equipment.

A

EMI filter

59
Q

A woofer speaker operates in the _____ frequency range.

A

low frequency

60
Q

A high-security camera enclosure is likely to be found on a camera installed in a _____.

A

prison/bank

61
Q

System controllers are basically a _____ with an operating system that allows programming.

A

computer

62
Q

The DTV standard specifies the requirements for _____ of digital television signals.

A

transmission, format, and compression

63
Q

The highest frequency band in the broadcast television frequency spectrum is the _____ band.

A

Ultra-High Frequency band

64
Q

The purpose of a home theater is to provide a(n) _____ viewing and listening experience.

A

immersive

65
Q

A _____ is a specialized loudspeaker that reproduces the extreme low frequencies present in movies or music.

A

subwoofer

66
Q

All of the following are recognition methods used by biometric readers except _____.

A

DNA

67
Q

From the client’s viewpoint, the _____ is the system.

A

user interface

68
Q

The compression technology used for DVDs is _____.

A

MPEG-2

69
Q

The term PTZ for a video camera refers to its ability to _____ the image.

A

pan, tilt, and zoom

70
Q

Which of the following speaker types operate in the high range of frequencies?

A

tweeter

71
Q

A _____ -pass filter attenuates (reduces the force of) frequencies on either side of a designated band of frequencies.

A

band-pass filter

71
Q

Audio systems are often integrated with _____ for voice notifications.

A

Fire alarm systems

72
Q

In the identification term “1080P,” the number 1080 specifies the number of lines of vertical resolution. The letter “P” refers to _____.

A

progressive scan

73
Q

This type of biometric reader often uses ultrasonic imaging techniques to obtain a visual image for comparison.

A

fingerprint reader

74
Q

Which of the following materials would be a good choice to shield against radio frequency interference?

A

copper

75
Q

Most failures of electrical equipment are due to:

A

overheating

76
Q

Outlet height should always be:

A

12 to 18 inches above the floor level

77
Q

The connector which is universally used to terminate coaxial cable for television signal distribution (antenna, cable, satellite) in the home is the _____ connector

A

F-type

78
Q

The highest bandwidth and throughput is found in _____.

A

fiber optic networks

79
Q

The one document that contains all critical information about the prewire (cables, locations, rough-in devices, etc.) is the:

A

prewire diagram

80
Q

The one document that contains all critical information about the prewire (cables, locations, rough-in devices, etc.) is the:

A

prewire diagram

81
Q

Using BNC connectors for video applications is not always appropriate. Historically, BNC connectors were used with _____ cables causing an impedance mismatch with video connectors.

A

50-ohm

82
Q

Never break off the _____ prong on a three-prong plug.

A

grounding

Electronic Systems Integration and Automation (4 decks)

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