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Low Voltage Standards Flashcards | StudBud
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Low Voltage Standards
Low Voltage Standards
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Test your knowledge on fundamental concepts and information about low voltage standards
Flashcards
46 cards
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Questions
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Answers
1
What is the maximum permanent link length?
200 feet / 60m
295 feet / 90m
330 feet / 100m
300 feet / 92 m
2
How many zones are in a retail paging setup?
Varies based on square footage
1 per aisle
Zero
One
3
Data cabling may share conduit with other cabling systems as long as the other system is also low voltage (<70V)
False
True
4
What size conduit should be used for data runs?
1/2"
1-1/2"
3/4"
1"
5
Patch Panel jack locations should be numbered sequentially right-to-left, bottom-to-top
False
True
6
What is a plenum cable and why is it used in data cabling?
Data cable used for high durability applications
A type of data cable for high-speed internet.
A type of data cable for areas with air flow, meeting fire safety standards
Cable used in outdoor environments to withstand extreme weather conditions
7
What must be used to wrap cable bundles?
Zip ties
String
Tape
Velcro
8
Cable can rest on top of the ceiling tile grid when running above the office package
False
True
9
Which types of conduit can be used for data runs?
Rigid
EMT
PVC
Liquidtite
10
What is the required "sag" added at the end of an AP or camera's data line run called?
Drip Loop
Dribble Curve
J-Trap
P-Trap
11
If a camera needs to be installed beyond 100m, use a:
POE Extender
Relay switch
None of the above
POE Injector
12
What is the minimum height above finished floor (AFF) at which exterior wireless access points should be mounted?
There is no minimum
10 ft
15 ft
12ft
13
The only acceptable cable for data runs:
Aruba DL360 Cat5e
Commscope 1061 Cat5e
Commscope MPS100 Cat5e cable
Southwire 6210 Cat5e
14
Where can the latest standard be found?
TFC SharePoint
Scofflaw
myApron
Glean
15
For new stores, what document provides cabling info such as: patch panel number, jack type, permanent link length etc.
Infrastructure Design Schematic
Transdoc
Cert-doc
Demarcation Document
16
"Cable Channel" refers to:
The distance from the switch to the station drop
The distance from the switch to the device
The distance from the patch panel to the station drop
The distance from the patch panel to the device
17
What length service loop is needed for a camera?
15 ft
20ft
5 ft
10 ft
18
What is the maximum conduit fill percentage allowed for all conduits?
20%
30% for 3/4", and 50% for 1/2"
30%
40%
19
All data jacks should labeled with the switch and port information
False
True
20
Cabling must NOT be run exposed across walls or along ceilings.
True
False
21
How wide should frontal access be clear for an IDF?
36 Inches (3")
Five Feet 11 Inches (5"11')
Four Feet (4")
Twelve Feet (12")
22
Cable must be supported every:
10 feet
12 inches
5 feet
3 feet
23
What are these?
Datajack
RJ45 Connector
RJ45 Jack
RJ45 Plugs
24
Analog Phone wall outlet boxes must be mounted 48" AFF (unless otherwise specified by ID&S)
False
True
25
Bundles must be supported how often and what is the max sag permited?
Cable sags?
Bundles must be supported every 7' and have no more than 5" of sag.
Bundles must be supported every 5' and have no more than 2" of sag.
Bundles must be supported every 8' and have no more than 3.5" of sag.
26
What length service loop is needed for a station drop?
10 ft
5 ft
20ft
15 ft
27
OSP cable is:
Optical Performant Cabling
Outodoor Plenum Cable
Outside Plant Cable
Not a real acronym
28
What is the maximum cable channel length?
300 feet / 92 m
295 feet / 90m
200 feet / 60m
330 feet / 100m
29
Conduit must be strapped:
Every 10 feet and within 5 feet of every junction box
Every 5 feet and within 2 feet of every junction box
Every 10 feet and within 3 feet of every junction box
Every 10 feet
30
UTP stands for:
Unshielded Twisted Pair
Unstranded Twisted Protocol
Universal Twisted Pair
Universal Twist Protocol
31
Local attenuation is installed in:
TRC, Main Distribution Frame, Service Desk, Receiving, and E-Learning Room
TRC, TRC maintenance room, Training room, Receiving, and E-Learning Room
TRC, TRC maintenance room, Training room, Receiving, and Outdoor Garden
Main Distribution Frame, TRC, Outdoor Garden, and Training Room
32
Conduit sections must not:
Be greater than 75' in length or have more than two 180 degree bends
Be greater than 50' in length or have more than two 90 degree bends
Be Greater than 125' in length and there is no limit to the number of bends
Be greater than 100' in length or have more than two 90 degree bends
33
You can make your own patch cables if you test them before using them.
False
True
34
BONUS: Data jacks should be installed with the pins down (like the picture)
True
False
35
The point where THD responsibility starts and LEC responsibility ends is called the:
Bond point
Demarc
MPOE
Transdoc
36
All pendant mount devices require:
Safety zip ties
One Safety cable
Two safety cables
Only cameras need safety cables
37
When penetrating fire rated walls, use:
Yellow 3m fireblock
Expanding fireblock foam
Hilti CP620 fireblock
Red 3m fireblock
38
It is okay to use the Out-of-Band (OOB) Patch Panel if there is no other patch panel available
Only for voice or fax lines
False
Only on Saturdays (and if Weston approves)
True
39
Outlet boxes should be installed at:
10" AFF
16" AFF
12" AFF
24" AFF
40
"Permanent Link" refers to:
The distance from the patch panel to the station drop
The distance from the patch panel to the device
The distance from the switch to the device
The distance from the switch to the station drop
41
You can adjust the Bogen TPU250 paging amplifier's settings during a new install
False
True
42
What must cover all MDF walls?
Metal sheets
Plastic panels
1/2" drywall
3/4" fire rated plywood
43
What length service loop is needed above an IDF?
20ft
15 ft
10 ft
5 ft
44
What is not permitted for copper cable?
Splicing
Terminating
Routing
Labeling
45
What is this?
One ring to rule them all.
Conduit Bushing
Conduit Nut.
Wire Keeper
46
What size patch cables should be used?
6 ft. in the MDF and IDF
6 ft. in the MDF and 3ft. in the IDF
3 ft. in the MDF and IDF
At least 3 ft. in the MDF and IDF
