VOICE DATA VIDEO VDV FINAL PAPER 2025 QUESTIONS
WITH SOLUTIONS RATED A+
✔✔Communication wires and cables shall be separated by at least 2 inches from
conductors of any electric light, power, Class 1, non-powered-limited fire alarm, or
medium powered network-powered broadband communication circuits unless
permanently separated by a continuous and firmly fixed nonconductor such as
_______.
a. porcelain tubes regardless of cable insulation
b. flexible tubing , porcelain tubes, in addition to the insulation on the wire
c. porcelain tubes, aluminum flexible raceway
d. none of the above - ✔✔b. flexible tubing , porcelain tubes, in addition to the insulation
on the wire
REF: [NEC] 800.133(A)(2) Exception #2
✔✔Community antenna television grounding conductors shall be _______.
a. bare copper
b. bare aluminum
c. insulated
d. any of the above - ✔✔d. any of the above
REF: [NEC] 820.100(A)(1)&(2)
✔✔46. What size outdoor antenna conductor shall be used for a receiving station,
where at the maximum open span length is 150 feet, and the material is hard-drawn
copper?
a. 20 AWG
b. 19 AWG
c. 14 AWG
d. 12 AWG - ✔✔c. 14 AWG
REF: [NEC] 810.16(A)
✔✔In installations where an optical fiber cable is exposed to contact with electric light or
power conductors and the cable is terminated on the outside of the building, the non-
current carrying members _______________ either grounded as specified in 770.100 or
interrupted by an insulating joint or equivalent device.
a. shall not
b. shall be
c. should
d. should not - ✔✔b. shall be
REF: [NEC] 770.93(B)
,✔✔48. For new construction, a minimum of one communications outlet shall be installed
within the dwelling unit ____________.
a. in the entry way
b. in a common area
c. in a readily accessible area
d. near the service providers point of demarcation - ✔✔c. in a readily accessible area
REF: [NEC] 800.156
✔✔What are the tip colors for a 25 pair telephone cable?
a. White, Red, Black, Yellow, Violet
b. Blue, Orange, Green, Brown, Slate
c. Blue, Red, Black, Slate, White
d. White, Red, Yellow, Black, Violet - ✔✔a. White, Red, Black, Yellow, Violet
✔✔Radio and television receiving equipment underground Lead-in conductors shall be
separated by at least ______ from light and power conductors.
a. 4 inches
b. 2 feet
c. 12 inches
d. 6 feet - ✔✔c. 12 inches
REF: [NEC] 810.18(A)
✔✔For communication circuits, if a building or structure has no intersystem bonding
termination or has no grounding means, the grounding conductor shall be connected to
one of the following except for:
a. interior metal water piping located within 5 feet from the point of entrance
b. any one of the individual electrodes described in 250.52(A)(7) and (A)(8).
c. a ground rod or pipe not less than 5 feet in length and 1/2 inch in diameter.
d. steam or hot water pipe or terminal conductors. - ✔✔d. steam or hot water pipe or
terminal conductors.
REF: [NEC] 800.100(B)(3)(2)
✔✔One watt is equal to ______ BTU/hour.
a. .3412
b. 3.412
c. 34.12
d. 1.312 - ✔✔b. 3.412
✔✔CM cable shall be listed as _______.
,a. having fire-resistant characteristics capable of preventing the carrying of fire from
floor to floor
b. being resistant to the spread of fire
c. having adequate fire resistant and low smoke producing characteristics
d. being resistant to flame spread - ✔✔b. being resistant to the spread of fire
REF: [NEC] 800.179(D)
✔✔Where power conductors are introduced to solely provide power to the
communications equipment, power circuit conductors and communications circuit
conductors shall maintain a minimum of _______ separation.
a. 0.25 inches
b. 0.5 inches
c. 2 inches
d. 6 inches - ✔✔a. 0.25 inches
REF: [NEC] 800.133(A)(1)(d) exception note 2
✔✔Type CMX communications cable less than _______ shall be permitted to be
installed in one and two family dwellings.
a. 0.25 inches diameter
b. a bundle size of 5/8" diameter
c. two cables per bundle
d. CMX type cables are not allowed in one and two family dwellings - ✔✔a. 0.25 inches
diameter
REF: [NEC] 800.113(L)(2)
✔✔The following cable types are allowed to be installed in a listed plenum
communications raceway installed in vertical riser runs in a shaft from floor to floor.
a. CMP, CMR, CMG, CM
b. CMP, CMG, CM, CMX
c. CMP, CMR
d. CMP, CM - ✔✔c. CMP, CMR
REF: [NEC] 800.154(A)
✔✔A bonding jumper not smaller than ______ copper or equivalent shall be connected
between the CATV systems grounding electrode system at the building or structure
served where separate electrodes are used.
a. 12 AWG
b. 10 AWG
c. 8 AWG
d. 6 AWG - ✔✔d. 6 AWG
REF: [NEC] 820.100(D)
, ✔✔When installing communications cables or wires, it is allowed to do the following:
a. attach to exterior conduit or raceway for support as long as access to junction boxes,
terminal cans, or raceway covers are not blocked
b. attach to exterior conduit or raceway for support as long as attachment means is
done by using a non-conductive strap
c. attach to the exterior of a raceway-type mast intended for the attachment and support
of such conductors for an overhead span
d. attach to the support of sprinkler pipes as long as the cables or wires are not
attached to the piping itself. - ✔✔c. attach to the exterior of a raceway-type mast
intended for the attachment and support of such conductors for an overhead span
REF: [NEC] 800.133(B) Exception
✔✔A ______ is used to measure optical power.
a. dispersion meter
b. light source
c. power meter
d. volt ohmmeter - ✔✔c. power meter
✔✔For communication circuits, secondary protectors need to be used with primary
protectors when exposure to accidental contact with electric light and power conductors
operating over _______ to ground
a. 90 volts
b. 120 volts
c. 300 volts
d. 600 volts - ✔✔c. 300 volts
REF: [NEC] 800.90(D) Information Note
✔✔Where there is no mobile home service equipment located within 30 feet of the
exterior wall of the mobile home it serves, the communication primary protector ground
shall be connected to a grounding conductor not smaller than ____.
a. 6 AWG
b. 12 AWG
c. 18 AWG
d. 20 AWG - ✔✔b. 12 AWG
REF: [NEC] 800.106(B)
✔✔Overhead CATV coaxial cables shall be permitted to be attached to the exterior of a
raceway ______.
WITH SOLUTIONS RATED A+
✔✔Communication wires and cables shall be separated by at least 2 inches from
conductors of any electric light, power, Class 1, non-powered-limited fire alarm, or
medium powered network-powered broadband communication circuits unless
permanently separated by a continuous and firmly fixed nonconductor such as
_______.
a. porcelain tubes regardless of cable insulation
b. flexible tubing , porcelain tubes, in addition to the insulation on the wire
c. porcelain tubes, aluminum flexible raceway
d. none of the above - ✔✔b. flexible tubing , porcelain tubes, in addition to the insulation
on the wire
REF: [NEC] 800.133(A)(2) Exception #2
✔✔Community antenna television grounding conductors shall be _______.
a. bare copper
b. bare aluminum
c. insulated
d. any of the above - ✔✔d. any of the above
REF: [NEC] 820.100(A)(1)&(2)
✔✔46. What size outdoor antenna conductor shall be used for a receiving station,
where at the maximum open span length is 150 feet, and the material is hard-drawn
copper?
a. 20 AWG
b. 19 AWG
c. 14 AWG
d. 12 AWG - ✔✔c. 14 AWG
REF: [NEC] 810.16(A)
✔✔In installations where an optical fiber cable is exposed to contact with electric light or
power conductors and the cable is terminated on the outside of the building, the non-
current carrying members _______________ either grounded as specified in 770.100 or
interrupted by an insulating joint or equivalent device.
a. shall not
b. shall be
c. should
d. should not - ✔✔b. shall be
REF: [NEC] 770.93(B)
,✔✔48. For new construction, a minimum of one communications outlet shall be installed
within the dwelling unit ____________.
a. in the entry way
b. in a common area
c. in a readily accessible area
d. near the service providers point of demarcation - ✔✔c. in a readily accessible area
REF: [NEC] 800.156
✔✔What are the tip colors for a 25 pair telephone cable?
a. White, Red, Black, Yellow, Violet
b. Blue, Orange, Green, Brown, Slate
c. Blue, Red, Black, Slate, White
d. White, Red, Yellow, Black, Violet - ✔✔a. White, Red, Black, Yellow, Violet
✔✔Radio and television receiving equipment underground Lead-in conductors shall be
separated by at least ______ from light and power conductors.
a. 4 inches
b. 2 feet
c. 12 inches
d. 6 feet - ✔✔c. 12 inches
REF: [NEC] 810.18(A)
✔✔For communication circuits, if a building or structure has no intersystem bonding
termination or has no grounding means, the grounding conductor shall be connected to
one of the following except for:
a. interior metal water piping located within 5 feet from the point of entrance
b. any one of the individual electrodes described in 250.52(A)(7) and (A)(8).
c. a ground rod or pipe not less than 5 feet in length and 1/2 inch in diameter.
d. steam or hot water pipe or terminal conductors. - ✔✔d. steam or hot water pipe or
terminal conductors.
REF: [NEC] 800.100(B)(3)(2)
✔✔One watt is equal to ______ BTU/hour.
a. .3412
b. 3.412
c. 34.12
d. 1.312 - ✔✔b. 3.412
✔✔CM cable shall be listed as _______.
,a. having fire-resistant characteristics capable of preventing the carrying of fire from
floor to floor
b. being resistant to the spread of fire
c. having adequate fire resistant and low smoke producing characteristics
d. being resistant to flame spread - ✔✔b. being resistant to the spread of fire
REF: [NEC] 800.179(D)
✔✔Where power conductors are introduced to solely provide power to the
communications equipment, power circuit conductors and communications circuit
conductors shall maintain a minimum of _______ separation.
a. 0.25 inches
b. 0.5 inches
c. 2 inches
d. 6 inches - ✔✔a. 0.25 inches
REF: [NEC] 800.133(A)(1)(d) exception note 2
✔✔Type CMX communications cable less than _______ shall be permitted to be
installed in one and two family dwellings.
a. 0.25 inches diameter
b. a bundle size of 5/8" diameter
c. two cables per bundle
d. CMX type cables are not allowed in one and two family dwellings - ✔✔a. 0.25 inches
diameter
REF: [NEC] 800.113(L)(2)
✔✔The following cable types are allowed to be installed in a listed plenum
communications raceway installed in vertical riser runs in a shaft from floor to floor.
a. CMP, CMR, CMG, CM
b. CMP, CMG, CM, CMX
c. CMP, CMR
d. CMP, CM - ✔✔c. CMP, CMR
REF: [NEC] 800.154(A)
✔✔A bonding jumper not smaller than ______ copper or equivalent shall be connected
between the CATV systems grounding electrode system at the building or structure
served where separate electrodes are used.
a. 12 AWG
b. 10 AWG
c. 8 AWG
d. 6 AWG - ✔✔d. 6 AWG
REF: [NEC] 820.100(D)
, ✔✔When installing communications cables or wires, it is allowed to do the following:
a. attach to exterior conduit or raceway for support as long as access to junction boxes,
terminal cans, or raceway covers are not blocked
b. attach to exterior conduit or raceway for support as long as attachment means is
done by using a non-conductive strap
c. attach to the exterior of a raceway-type mast intended for the attachment and support
of such conductors for an overhead span
d. attach to the support of sprinkler pipes as long as the cables or wires are not
attached to the piping itself. - ✔✔c. attach to the exterior of a raceway-type mast
intended for the attachment and support of such conductors for an overhead span
REF: [NEC] 800.133(B) Exception
✔✔A ______ is used to measure optical power.
a. dispersion meter
b. light source
c. power meter
d. volt ohmmeter - ✔✔c. power meter
✔✔For communication circuits, secondary protectors need to be used with primary
protectors when exposure to accidental contact with electric light and power conductors
operating over _______ to ground
a. 90 volts
b. 120 volts
c. 300 volts
d. 600 volts - ✔✔c. 300 volts
REF: [NEC] 800.90(D) Information Note
✔✔Where there is no mobile home service equipment located within 30 feet of the
exterior wall of the mobile home it serves, the communication primary protector ground
shall be connected to a grounding conductor not smaller than ____.
a. 6 AWG
b. 12 AWG
c. 18 AWG
d. 20 AWG - ✔✔b. 12 AWG
REF: [NEC] 800.106(B)
✔✔Overhead CATV coaxial cables shall be permitted to be attached to the exterior of a
raceway ______.
