Exam (elaborations)
VDV PRACTICE TEST 1 (CCTV FOCUSED) QUESTIONS AND ANSWERS
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VDV PRACTICE TEST 1 (CCTV FOCUSED) QUESTIONS AND ANSWERS
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Name: Score:49 Multiple choice questions
Term 1 of 49
What is the minimum voice cabling type for a residential application?
4-pair, category 5
250
4-pair, category 3
4-pair, category 2
Term 2 of 49
How many employees must be working on a jobsite for a first aid kit to be required on the
jobsite?
1
D
100
30
Term 3 of 49
When installing a CCTV system,what equipment is required to make the system work.
an entrant from passing their card to the person behind them.
camera, lens, transmission link, monitor
full-duplex communication
white, red, black, yellow, violet
,Term 4 of 49
The formula used to find resistance is.
fiber
R= E / I
a band
circular mil
Term 5 of 49
The unit of measure used to measure the cross-sectional area of wire is ______?
square millimeter
linear meter
gauge
circular mil
Term 6 of 49
Chapter 8 of the NEC covers _________ systems and is not subject to the requirements of the
other chapters except where they are specifically referenced therein.
plumbing
structural
electrical
communications
Term 7 of 49
According the NEC, metal cable trays and wireways _________ bonded to ground.
carefully
voltage
shall be
perimeter
,Term 8 of 49
Convert the following value to amps, 212mA
0.212
0.00222
5.212
0.118
Term 9 of 49
Low Voltage systems are not capable of electrocution due to the fact that _______.
Low voltage systems can cause electrocution
Low voltage systems only work with non-conductive materials.
Low voltage systems are designed to prevent any electrical shock.
Low voltage systems are completely safe and cannot harm anyone.
Term 10 of 49
What does the acronym AFF stand for?
the width of the box at its base
the total volume of the box
the measurement from the center of the box to the finished floor
the height of the box from the ground
Term 11 of 49
The primary or tip colors are:
blue, orange, green, brown, slate
white, red, black, yellow, violet
red, white, blue, yellow, green
green, yellow, red
, Term 12 of 49
To increase the field of view of a CCTV camera, a __________________ is used.
fiber optic lens
short focal length lens
wide-angle lens
telephoto lens
Term 13 of 49
Which of the following units combines multiple signals, provides input selection, and allows
signal control?
power meter
blender
preamplifier
mixer
Term 14 of 49
Which of the following could be an ignition source for liquids that are flammable?
burning cigarette
cutting torch
sparking hand tools
all of thes
Term 15 of 49
A force that pushes electrons through a circuit is called ____________.
current
voltage
resistance
power
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