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VDV Study Guide v1.0 Questions & answers with Complete solutions | Latest edition
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VDV Study Guide v1.0 Questions & answers with Complete solutions | Latest edition
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VDV Study Guide v1.0When you are sound masking, what is white noise used for? - ANS-To produce ambient
noise
dB is a ratio of - ANS-2 quantities
In antenna television system, what is a permitted substitution for CATVP cable? -
ANS-BLP
Which type of cable is permitted substitution for OFNP? - ANS-NONE
What is the cable marking for Class 3 plenum? - ANS-CL3P
Dynamic Range means? - ANS-Between the loudest & quietest portion of a program in
decibels
Hierarchy of cables - ANS-CMP>CMR>CM>CMG>CMX
[820.154(B)]
Maximum untwist at connector of CAT 5E - ANS-.5 inch (13mm)
What type of termination for voice application? - ANS-66 Block
What system uses a one piece pass through system - ANS-Bixby or Bix
Which connector for CCTV is used to terminate both sides? - ANS-BNC
Best connector for surveillance systems? - ANS-BNC
Where to use bridging clips? - ANS-66 block
What type of connector to use for CCTV? - ANS-BNC
GFCI used for safety on a jobsite can not be - ANS-Electrical Cord
Cold wind exposed to skin will cause - ANS-Frost bite
, Where can you find MSDS? (Material safety data sheet) - ANS-Employer
What happens if you put a multimeter across a load on a de-energized parallel circuit? -
ANS-Reading will be resistance
How do you measure cable length? - ANS-TDR (Time domain reflectometer)
First step on finding resistance using a multi-meter? - ANS-Disconnect power
(de-energize)
What meter does not detect open or short? - ANS-VFL
What type of detector is microwave? - ANS-Motion sensor
Video signal carry 3 types of signal brightness, color and - ANS-synchronization
What is not needed for focal length - ANS-Area
What does the acronym for CRT stand for? - ANS-Cathode Ray Tube
What is the final step in certification testing? - ANS-saving each test
What info is not on TR plan? - ANS-Ceiling info
What prevents equipment from cooling down? - ANS-DUST
What type of plan would you use to troubleshoot? - ANS-Point-to-Point
What connector is used for satellite? - ANS-F-type
What statement does not apply to voltage marking? - ANS-Voltage marking have to be
1/2" from voltage marking.
820.179(F)
What listed cable is used for dwelling? - ANS-CATVX
Four components required for a cctv system - ANS-Camera, lens, transmission media,
and monitor.
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