Voice-Data-Video (VDV)General
Knowledge Comprehensive Questions
with Approved Answers Guaranteed
Full Score 100% Download!!!
__________ and __________ are required for terminating wire pairs and support cross-connect wiring
and patch cords in a 110 block. - Answer -Connecting blocks, wiring blocks
__________ and __________ are the two types of delay measured in a cable test. - Answer -
Propagation delay, delay skew
__________ and __________ optical fiber cables are permitted to be installed in listed plenum raceways.
- Answer -OFCP, OFNP
__________ are devices that restrict the level of audio signals. - Answer -Limiters
__________ are needed to connect phones to VOIP. - Answer -Two conductors
__________ are the best for measuring signal loss in an optical fiber cable. - Answer -Optical loss
test sets
__________ are used in communications systems to ensure continued operation of critical circuits during
a specified time under fire conditions. - Answer -Circuit integrity cables
__________ cable is used for serial communication, with a maximum run distance of __________ -
Answer -RS232, 50 feet
__________ cables are susceptible to electrical noise. - Answer -Unshielded Twisted Pair (UTP)
__________ cabling requires a minimum of one Cat 6A or higher and one RG-6 or RG-11 coaxial cable. -
Answer -Grade 1
__________ cabling requires a minimum of two Cat 6A or higher and two RG-6 or RG-11 coaxial cable
and minimum of one pair of optical fiber cables. - Answer -Grade 3
__________ cabling requires a minimum of two Cat 6A or higher and two RG-6 or RG-11 coaxial cable. -
Answer -Grade 2
__________ can be used to substitute for CATV cable, but CMX and FPLP cannot. - Answer -CATVP
__________ cannot be used for antennas and their lead-in conductors. - Answer -Plastic
,__________ carries information through modulated light signals, with only the core carrying the signal. -
Answer -Optical fiber cable
__________ connectors would be required on a faceplate if you needed composite (RCA), 2 BNC and
stereo speaker connections. - Answer -Five
__________ contains optical fiber and current-carrying electrical conductors. - Answer -Composite
optical fiber cable
__________ contains UTP, coaxial cable, and fiber-optic cable within a single jacket. - Answer -
Composite cable
__________ fiber cable is used by the telephone industry for long distance communications, where the
bandwidth is essentially infinite. - Answer -Singlemode
__________ in audio refers to the difference in volume between the quietest and loudest parts of an
audio signal, measured in decibels (dB). - Answer -Dynamic range
__________ is a composite value that represents all the harmonics present in a signal. - Answer -
Total Harmonic Distortion (THD)
__________ is a conductor used to wire up speakers in order to avoid grounding issues. - Answer -
CMR 85
__________ is a limited-use television coaxial cable for residential applications. - Answer -CATVX
__________ is a measurement of how fast a signal travels through a cable relative to the speed of light in
a vacuum. - Answer -Nominal velocity of propagation
__________ is a measurement of the amount of signal energy that is reflected back to a transmitter as it
travels down a twisted pair while encountering impedance discontinuities. - Answer -Return loss
__________ is a term used in antenna specifications to describe the width of an antenna's main lobe at
the points where the voltage is 0.707 times the maximum voltage. - Answer -Beamwidth
__________ is a type of cable used for audio and video communications, consisting of a center
conductor surrounded by insulation and a shield. - Answer -Coaxial cable
__________ is caused by scattering, absorption and bending. - Answer -Fiber attenuation
__________ is not needed for focal length. - Answer -Area
__________ is often used to test and equalize loudspeakers in rooms and auditoriums, serving as a
reference signal. - Answer -Pink noise
__________ is the amount of time required for a signal to be received after it has been sent. -
Answer -Propagation delay
__________ is the difference between the amount of delay for the fastest (shortest twist lengths) and
the slowest (longest twist lengths) pairs within a cable. - Answer -Delay skew
, __________ is the difference in propagation delay between the fastest and slowest pairs of data in a
cable. - Answer -Delay skew
__________ is the distance between the entrance lens and the point where all the light rays converge to
a point, typically the camera's image sensor. - Answer -Focal length
__________ is the most important fiber specification to the user and is an important factor in testing. -
Answer -Attenuation
__________ is the noise caused by the leakage of AC power into a circuit. - Answer -Hum
__________ is the primary concern in paging and announcing systems, referring to the clarity and
understandability of the transmitted message. - Answer -Intelligibility
__________ is the recommended method for terminating copper cables, using a crimp connector. -
Answer -Compression
__________ is the reflection of small amounts of light in all directions as it travels down the fiber. -
Answer -Scattering
__________ is the total opposition to the flow of alternating current (AC) in an electrical circuit. -
Answer -Impedance
__________ is the transmission of signals at levels that interfere with the operation of nearby devices,
applications, technologies, and communication networks. - Answer -Radio frequency interference
(RFI)
__________ is typically not on a telecommunications room plan. - Answer -Ceiling information
__________ is undesired induction of a signal from one pair to another. - Answer -Near End
Crosstalk (NEXT)
__________ is unfiltered and unaltered thermal noise. - Answer -White noise
__________ is used to describe a locking device that locks during a power or equipment failure. -
Answer -Fail secure
__________ is used to describe a locking device that unlocks in the event of a power failure. -
Answer -Fail safe
__________ is used to measure the acoustic response of a room or sound field. - Answer -Pink
noise
__________ is used to transfer information between two personal computers through their serial ports.
- Answer -Null-Modem cable
__________ is what limits the length of fiber cable, because it increases proportionally with cable length.
- Answer -Light dispersion
Knowledge Comprehensive Questions
with Approved Answers Guaranteed
Full Score 100% Download!!!
__________ and __________ are required for terminating wire pairs and support cross-connect wiring
and patch cords in a 110 block. - Answer -Connecting blocks, wiring blocks
__________ and __________ are the two types of delay measured in a cable test. - Answer -
Propagation delay, delay skew
__________ and __________ optical fiber cables are permitted to be installed in listed plenum raceways.
- Answer -OFCP, OFNP
__________ are devices that restrict the level of audio signals. - Answer -Limiters
__________ are needed to connect phones to VOIP. - Answer -Two conductors
__________ are the best for measuring signal loss in an optical fiber cable. - Answer -Optical loss
test sets
__________ are used in communications systems to ensure continued operation of critical circuits during
a specified time under fire conditions. - Answer -Circuit integrity cables
__________ cable is used for serial communication, with a maximum run distance of __________ -
Answer -RS232, 50 feet
__________ cables are susceptible to electrical noise. - Answer -Unshielded Twisted Pair (UTP)
__________ cabling requires a minimum of one Cat 6A or higher and one RG-6 or RG-11 coaxial cable. -
Answer -Grade 1
__________ cabling requires a minimum of two Cat 6A or higher and two RG-6 or RG-11 coaxial cable
and minimum of one pair of optical fiber cables. - Answer -Grade 3
__________ cabling requires a minimum of two Cat 6A or higher and two RG-6 or RG-11 coaxial cable. -
Answer -Grade 2
__________ can be used to substitute for CATV cable, but CMX and FPLP cannot. - Answer -CATVP
__________ cannot be used for antennas and their lead-in conductors. - Answer -Plastic
,__________ carries information through modulated light signals, with only the core carrying the signal. -
Answer -Optical fiber cable
__________ connectors would be required on a faceplate if you needed composite (RCA), 2 BNC and
stereo speaker connections. - Answer -Five
__________ contains optical fiber and current-carrying electrical conductors. - Answer -Composite
optical fiber cable
__________ contains UTP, coaxial cable, and fiber-optic cable within a single jacket. - Answer -
Composite cable
__________ fiber cable is used by the telephone industry for long distance communications, where the
bandwidth is essentially infinite. - Answer -Singlemode
__________ in audio refers to the difference in volume between the quietest and loudest parts of an
audio signal, measured in decibels (dB). - Answer -Dynamic range
__________ is a composite value that represents all the harmonics present in a signal. - Answer -
Total Harmonic Distortion (THD)
__________ is a conductor used to wire up speakers in order to avoid grounding issues. - Answer -
CMR 85
__________ is a limited-use television coaxial cable for residential applications. - Answer -CATVX
__________ is a measurement of how fast a signal travels through a cable relative to the speed of light in
a vacuum. - Answer -Nominal velocity of propagation
__________ is a measurement of the amount of signal energy that is reflected back to a transmitter as it
travels down a twisted pair while encountering impedance discontinuities. - Answer -Return loss
__________ is a term used in antenna specifications to describe the width of an antenna's main lobe at
the points where the voltage is 0.707 times the maximum voltage. - Answer -Beamwidth
__________ is a type of cable used for audio and video communications, consisting of a center
conductor surrounded by insulation and a shield. - Answer -Coaxial cable
__________ is caused by scattering, absorption and bending. - Answer -Fiber attenuation
__________ is not needed for focal length. - Answer -Area
__________ is often used to test and equalize loudspeakers in rooms and auditoriums, serving as a
reference signal. - Answer -Pink noise
__________ is the amount of time required for a signal to be received after it has been sent. -
Answer -Propagation delay
__________ is the difference between the amount of delay for the fastest (shortest twist lengths) and
the slowest (longest twist lengths) pairs within a cable. - Answer -Delay skew
, __________ is the difference in propagation delay between the fastest and slowest pairs of data in a
cable. - Answer -Delay skew
__________ is the distance between the entrance lens and the point where all the light rays converge to
a point, typically the camera's image sensor. - Answer -Focal length
__________ is the most important fiber specification to the user and is an important factor in testing. -
Answer -Attenuation
__________ is the noise caused by the leakage of AC power into a circuit. - Answer -Hum
__________ is the primary concern in paging and announcing systems, referring to the clarity and
understandability of the transmitted message. - Answer -Intelligibility
__________ is the recommended method for terminating copper cables, using a crimp connector. -
Answer -Compression
__________ is the reflection of small amounts of light in all directions as it travels down the fiber. -
Answer -Scattering
__________ is the total opposition to the flow of alternating current (AC) in an electrical circuit. -
Answer -Impedance
__________ is the transmission of signals at levels that interfere with the operation of nearby devices,
applications, technologies, and communication networks. - Answer -Radio frequency interference
(RFI)
__________ is typically not on a telecommunications room plan. - Answer -Ceiling information
__________ is undesired induction of a signal from one pair to another. - Answer -Near End
Crosstalk (NEXT)
__________ is unfiltered and unaltered thermal noise. - Answer -White noise
__________ is used to describe a locking device that locks during a power or equipment failure. -
Answer -Fail secure
__________ is used to describe a locking device that unlocks in the event of a power failure. -
Answer -Fail safe
__________ is used to measure the acoustic response of a room or sound field. - Answer -Pink
noise
__________ is used to transfer information between two personal computers through their serial ports.
- Answer -Null-Modem cable
__________ is what limits the length of fiber cable, because it increases proportionally with cable length.
- Answer -Light dispersion
