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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
Sound levels greater than _____ dB can cause permanent hearing damage.
120 dB
26
The goal of commissioning is to make sure that _____.
systems perform as intended
27
The ideal input (AC) power will be of constant _____.
voltage
28
The key to integration is the _____ among the user and components of the integrated systems.
Communication
29
The purpose of Acoustic Treatments is _____?
to improve the sound quality within a space
30
Use a(n) _____ to view the video from two cameras on a single monitor.
video multiplexers
31
A cabling scheme that has been designed to handle both analog and digital video but has a critical length requirement is _____.
DVI-I
32
A hand/finger geometry reader is a type of _____.
biometric authentication
33
Color TV video signals must carry three basic types of information: _____.
Brightness, color, and synchronization
34
In the _____ layer OSI model, the layer that defines the physical and electrical specifications of the actual connection of a device is layer 1.
Physical Layer
35
The height of a sound wave above and below the zero point is called _____.
amplitude
36
The _____ is the person, company or agency responsible for planning and supervising the commissioning of a system.
commissioned authority
37
Use a _____ to mount monitors and controls used in a video production studio.
console
38
Sound, in its most basic form, is _____.
vibrations
39
The grounded electrode system includes the grounded electrode conductor, the grounding electrode and the _____.
ground
40
The only difference between a monochrome image and a black and white image is that the black and white image contains _____.
shades of gray
41
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 _____.
RJ-31X jack
42
When two or more persons or vehicles pass through an entry point with only one authorized entrant, it is referred to as _____.
tailgating or piggybacking
43
Entry control systems are usually powered by _____.
12VDC or 24VDC
44
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
safety lighting
45
One common element of all microphones is the _____, which reacts to sound pressure by producing vibrations.
diaphragm
46
The term bonding involves connecting all noncurrent carrying metal parts of the electrical system and equipment to _____.
grounding system
47
Which of the following video formats uses a compressed format?
Windows Media Video
48
A frequency of 10 million hertz would be expressed as _____.
10 megahertz (MHz)
49
A charge-coupled device (CCD) chip contains imaging elements called _____.
photosites or pixels
50
In a Home Theater, the paint should not be a gloss or eggshell finish, but a _____ or _____ finish.
matte or flat
51
Surge protection devices limit peak surge voltages and _____ to ground.
redirect or divert
52
The most common microphone pickup pattern is the _____.
cardioid microphone
53
While a local area network (LAN) is the physical grouping of network devices, a _____ is a logical grouping of network devices.
VLAN
54
A piezoelectric speaker is most likely used for ______ applications.
low power
55
A wireless network can be established by use of wireless access point transceivers using the specifications of _____.
IEEE 802.11
56
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.
riser
57
Training is designed to transfer _____ to the trainee.
knowledge
58
Use a(n) _____ to block higher frequency noise from affecting sensitive electronic equipment.
EMI filter
59
A woofer speaker operates in the _____ frequency range.
low frequency
60
A high-security camera enclosure is likely to be found on a camera installed in a _____.
prison/bank
61
System controllers are basically a _____ with an operating system that allows programming.
computer
62
The DTV standard specifies the requirements for _____ of digital television signals.
transmission, format, and compression
63
The highest frequency band in the broadcast television frequency spectrum is the _____ band.
Ultra-High Frequency band
64
The purpose of a home theater is to provide a(n) _____ viewing and listening experience.
immersive
65
A _____ is a specialized loudspeaker that reproduces the extreme low frequencies present in movies or music.
subwoofer
66
All of the following are recognition methods used by biometric readers except _____.
DNA
67
From the client's viewpoint, the _____ is the system.
user interface
68
The compression technology used for DVDs is _____.
MPEG-2
69
The term PTZ for a video camera refers to its ability to _____ the image.
pan, tilt, and zoom
70
Which of the following speaker types operate in the high range of frequencies?
tweeter
71
A _____ -pass filter attenuates (reduces the force of) frequencies on either side of a designated band of frequencies.
band-pass filter
71
Audio systems are often integrated with _____ for voice notifications.
Fire alarm systems
72
In the identification term "1080P," the number 1080 specifies the number of lines of vertical resolution. The letter "P" refers to _____.
progressive scan
73
This type of biometric reader often uses ultrasonic imaging techniques to obtain a visual image for comparison.
fingerprint reader
74
Which of the following materials would be a good choice to shield against radio frequency interference?
copper
75
Most failures of electrical equipment are due to:
overheating
76
Outlet height should always be:
12 to 18 inches above the floor level
77
The connector which is universally used to terminate coaxial cable for television signal distribution (antenna, cable, satellite) in the home is the _____ connector
F-type
78
The highest bandwidth and throughput is found in _____.
fiber optic networks
79
The one document that contains all critical information about the prewire (cables, locations, rough-in devices, etc.) is the:
prewire diagram
80
The one document that contains all critical information about the prewire (cables, locations, rough-in devices, etc.) is the:
prewire diagram
81
Using BNC connectors for video applications is not always appropriate. Historically, BNC connectors were used with _____ cables causing an impedance mismatch with video connectors.
50-ohm
82
Never break off the _____ prong on a three-prong plug.
grounding

Electronic Systems Integration and Automation (4 decks)

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