VOICE DATA VIDEO VDV EXAM SCRIPT 2025 QUESTIONS
WITH SOLUTIONS RATED A+
✔✔The ________ portion of abandoned communications cables shall be removed.
a. accessible
b. viewable
c. surface
d. hidden - ✔✔a. accessible
REF: [NEC] 800.25
✔✔10. Installation of equipment that is electrically connected to a communications
network shall __________________________.
a. also include temporary connection of testing equipment for maintenance or repair.
b. be listed as being suitable for electrical connection to a communication network.
c. be listed as being suitable for electrical connection to a communications network
including temporary connection of testing equipment for maintenance orrepair.
d. none of the above - ✔✔b. be listed as being suitable for electrical connection to a
communication network.
REF: [NEC] 800.170, 800.18
✔✔What type of coaxial cable could be substituted for CATV cable?
a. CMX
b. CATVP
c. FPLP
d. all of the above. - ✔✔b. CATVP
REF: [NEC] 820.154(b)
✔✔Access to electrical equipment ______________ be denied by an accumulation of
optical fiber cables that _______ removal of panels including suspended ceiling panels.
a. shall not, prevents
b. shall not, impedes
c. shall not, conveys
d. none of the above - ✔✔a. shall not, prevents
REF: [NEC] 770.21
✔✔Which group of optical fiber cable markings is not correct?
a. OFNP, OFCP, OFNR
b. OFNP, OFNX
c. OFCG, OFC
d. OFNP, OFNR - ✔✔b. OFNP, OFNX
,REF: [NEC] 770.179
✔✔OFNP is _______________.
a. nonconductive optical fiber general purpose cable
b. optical fiber non-plenum cable
c. optical fiber conductive plenum cable
d. nonconductive optical fiber plenum cable. - ✔✔d. nonconductive optical fiber plenum
cable.
REF: [NEC] 770.179
✔✔What are the permitted substitutions for a CL3R?
a. CMP, CL3P, CMR
b. CMP, CL3P, CL2P
c. CMP, CL3P, CL2P, CMR, CL3R
d. CL3R, CMG, CM, PLTC - ✔✔a. CMP, CL3P, CMR
REF: [NEC] 725.154(A)
✔✔CL2 nomenclature stands for?
a. Communication Level 2
b. Class 2
c. Conductive Load x2
d. none of the above - ✔✔b. Class 2
REF: [NEC] 725.179
✔✔Communication wires and cables shall have a voltage rating of not less than
________.
a. 100 Volts
b. 300 Amps
c. 300 Volts
d. 600 Volts - ✔✔c. 300 Volts
REF: [NEC] 800.179
✔✔What article would you find information regarding Radio & Television equipment?
a. Article 720
b. Article 725
c. Article 770
d. Article 810 - ✔✔d. Article 810
✔✔Which optical fiber cable(s) could be substituted for OFNR?
,a. OFN, OFNG
b. OFNP
c. OFNG
d. OFCP - ✔✔b. OFNP
REF: [NEC] 770.179 and 770.154
✔✔Which optical fiber cable could be substituted for OFC?
a. OFN
b. OFCR
c. OFNP
d. all of the above - ✔✔d. all of the above
REF: [NEC] 770.154(B)
✔✔A parallel circuit, having three branches, has a total resistance of _______ if the
branches had the following resistance - 100 ohms, 100 ohms and 50 ohms.
a. 25 Ohms
b. 75 OHms
c. 100 Ohms
d. 250 Ohms - ✔✔a. 25 Ohms
✔✔Where practical, a separation of how much distance shall be maintained between
communications wires and cables on buildings and lightning conductors?
a. 2.5 m (8 feet)
b. 1.8 m (6 feet)
c. 300 mm (12 inches)
d. 1.0 m (40 inches) - ✔✔b. 1.8 m (6 feet)
REF: [NEC] 800.53
✔✔Communication systems in patient care areas (hospitals) should be ?
a. Installed in type CMHC cables
b. Installed in separate metal raceways
c. Separated at least 12 inches from power conductor raceways
d. Constructed with equivalent insulation and isolation to that required for the electrical
distribution system - ✔✔d. Constructed with equivalent insulation and isolation to that
required for the electrical distribution system
REF: [NEC] 517.80
✔✔When tagging abandoned communications cables for future use, what is the
requirement of the tag?
a. it should identify when the cable will be used
, b. it should be made of plastic and have a printed label.
c. it should tell where the cable orginates and is terminated
d. it should be durable enough to withstand the environment involved. - ✔✔d. it should
be durable enough to withstand the environment involved.
REF: [NEC] 800.25
✔✔Driven communication primary protector ground rods without an intersystem ground
connection should be separated from electrodes of other systems by at least?
a. 1.5 m (5 feet)
b. 1.8 m (6 feet)
c. 2.4 m (8 feet)
d. 3 m (10 feet) - ✔✔b. 1.8 m (6 feet)
REF: [NEC] 800.100(B)(3)(2)
✔✔When grounding non-current carrying metallic members of optical fiber cables, the
grounding conductor shall not be smaller than ________________AWG and shall not
be required to exceed __________________AWG.
a. 12, 6
b. 12, 14
c. 14, 6
d. 6, one aught - ✔✔c. 14, 6
REF: [NEC] 770.100(A)(3)
✔✔Where serving a mobile home, the CATV coaxial cable shield ground should be
connected to the metal frame of the mobile home or available grounding terminal of the
mobile home where the service disconnecting means is located within how many feet of
the exterior wall of the mobile home?
a. 10 feet
b. 20 feet
c. 30 feet
d. 40 feet - ✔✔c. 30 feet
REF: [NEC] 820.106(A)(1), 820.93
✔✔Direct-buried separation of underground CATV radio & television conductors from
conductors of any light or power circuits or class 1 circuits (disregard exceptions).
a. 12 inches
b. 18 inches
c. 24 inches
d. 36 inches - ✔✔a. 12 inches
REF: [NEC] 820.47(B)
WITH SOLUTIONS RATED A+
✔✔The ________ portion of abandoned communications cables shall be removed.
a. accessible
b. viewable
c. surface
d. hidden - ✔✔a. accessible
REF: [NEC] 800.25
✔✔10. Installation of equipment that is electrically connected to a communications
network shall __________________________.
a. also include temporary connection of testing equipment for maintenance or repair.
b. be listed as being suitable for electrical connection to a communication network.
c. be listed as being suitable for electrical connection to a communications network
including temporary connection of testing equipment for maintenance orrepair.
d. none of the above - ✔✔b. be listed as being suitable for electrical connection to a
communication network.
REF: [NEC] 800.170, 800.18
✔✔What type of coaxial cable could be substituted for CATV cable?
a. CMX
b. CATVP
c. FPLP
d. all of the above. - ✔✔b. CATVP
REF: [NEC] 820.154(b)
✔✔Access to electrical equipment ______________ be denied by an accumulation of
optical fiber cables that _______ removal of panels including suspended ceiling panels.
a. shall not, prevents
b. shall not, impedes
c. shall not, conveys
d. none of the above - ✔✔a. shall not, prevents
REF: [NEC] 770.21
✔✔Which group of optical fiber cable markings is not correct?
a. OFNP, OFCP, OFNR
b. OFNP, OFNX
c. OFCG, OFC
d. OFNP, OFNR - ✔✔b. OFNP, OFNX
,REF: [NEC] 770.179
✔✔OFNP is _______________.
a. nonconductive optical fiber general purpose cable
b. optical fiber non-plenum cable
c. optical fiber conductive plenum cable
d. nonconductive optical fiber plenum cable. - ✔✔d. nonconductive optical fiber plenum
cable.
REF: [NEC] 770.179
✔✔What are the permitted substitutions for a CL3R?
a. CMP, CL3P, CMR
b. CMP, CL3P, CL2P
c. CMP, CL3P, CL2P, CMR, CL3R
d. CL3R, CMG, CM, PLTC - ✔✔a. CMP, CL3P, CMR
REF: [NEC] 725.154(A)
✔✔CL2 nomenclature stands for?
a. Communication Level 2
b. Class 2
c. Conductive Load x2
d. none of the above - ✔✔b. Class 2
REF: [NEC] 725.179
✔✔Communication wires and cables shall have a voltage rating of not less than
________.
a. 100 Volts
b. 300 Amps
c. 300 Volts
d. 600 Volts - ✔✔c. 300 Volts
REF: [NEC] 800.179
✔✔What article would you find information regarding Radio & Television equipment?
a. Article 720
b. Article 725
c. Article 770
d. Article 810 - ✔✔d. Article 810
✔✔Which optical fiber cable(s) could be substituted for OFNR?
,a. OFN, OFNG
b. OFNP
c. OFNG
d. OFCP - ✔✔b. OFNP
REF: [NEC] 770.179 and 770.154
✔✔Which optical fiber cable could be substituted for OFC?
a. OFN
b. OFCR
c. OFNP
d. all of the above - ✔✔d. all of the above
REF: [NEC] 770.154(B)
✔✔A parallel circuit, having three branches, has a total resistance of _______ if the
branches had the following resistance - 100 ohms, 100 ohms and 50 ohms.
a. 25 Ohms
b. 75 OHms
c. 100 Ohms
d. 250 Ohms - ✔✔a. 25 Ohms
✔✔Where practical, a separation of how much distance shall be maintained between
communications wires and cables on buildings and lightning conductors?
a. 2.5 m (8 feet)
b. 1.8 m (6 feet)
c. 300 mm (12 inches)
d. 1.0 m (40 inches) - ✔✔b. 1.8 m (6 feet)
REF: [NEC] 800.53
✔✔Communication systems in patient care areas (hospitals) should be ?
a. Installed in type CMHC cables
b. Installed in separate metal raceways
c. Separated at least 12 inches from power conductor raceways
d. Constructed with equivalent insulation and isolation to that required for the electrical
distribution system - ✔✔d. Constructed with equivalent insulation and isolation to that
required for the electrical distribution system
REF: [NEC] 517.80
✔✔When tagging abandoned communications cables for future use, what is the
requirement of the tag?
a. it should identify when the cable will be used
, b. it should be made of plastic and have a printed label.
c. it should tell where the cable orginates and is terminated
d. it should be durable enough to withstand the environment involved. - ✔✔d. it should
be durable enough to withstand the environment involved.
REF: [NEC] 800.25
✔✔Driven communication primary protector ground rods without an intersystem ground
connection should be separated from electrodes of other systems by at least?
a. 1.5 m (5 feet)
b. 1.8 m (6 feet)
c. 2.4 m (8 feet)
d. 3 m (10 feet) - ✔✔b. 1.8 m (6 feet)
REF: [NEC] 800.100(B)(3)(2)
✔✔When grounding non-current carrying metallic members of optical fiber cables, the
grounding conductor shall not be smaller than ________________AWG and shall not
be required to exceed __________________AWG.
a. 12, 6
b. 12, 14
c. 14, 6
d. 6, one aught - ✔✔c. 14, 6
REF: [NEC] 770.100(A)(3)
✔✔Where serving a mobile home, the CATV coaxial cable shield ground should be
connected to the metal frame of the mobile home or available grounding terminal of the
mobile home where the service disconnecting means is located within how many feet of
the exterior wall of the mobile home?
a. 10 feet
b. 20 feet
c. 30 feet
d. 40 feet - ✔✔c. 30 feet
REF: [NEC] 820.106(A)(1), 820.93
✔✔Direct-buried separation of underground CATV radio & television conductors from
conductors of any light or power circuits or class 1 circuits (disregard exceptions).
a. 12 inches
b. 18 inches
c. 24 inches
d. 36 inches - ✔✔a. 12 inches
REF: [NEC] 820.47(B)
