NCCER ELECTRICAL LEVEL 2 MODULE 3 2026
QUESTION COLLECTION NATIONAL
ELECTRICAL CODE FUNDAMENTALS MODULE
SOLVED ITEMS AND RESPONSE KEY
◉ What are the five main structured cabling subsystems? Answer:
Campus backbone, Equipment/Telecom room, Riser, Horizontal,
Work area
◉ What does the campus backbone subsystem do? Answer: Provides
outside plant connectivity between buildings in a campus
environment. Includes building entrances.
◉ What is the purpose of the equipment room subsystem? Answer:
The area where all subsystems for a building or campus connect (ER,
TR, or MC).
◉ What is the riser subsystem responsible for? Answer:
Connectivity between ERs, TRs, and MCs using blocks, cables,
pathways, and hardware.
◉ What does the horizontal cabling subsystem include? Answer:
Patch panels, cables, and hardware to deliver connectivity to the end
user outlet location.
,◉ What is included in the work area subsystem? Answer: Telecom
outlets at the end user location and patch cables for final
connectivity.
◉ What do structured cabling systems include? Answer: Cable, jacks,
faceplates, patch panels, trays, conduits, boxes, enclosures, support
and suspension systems.
◉ What cable types are used in structured cabling systems? Answer:
UTP, STP, Coaxial, Fiber Optic
◉ What is UTP cable made of? Answer: 1-1,800 twisted pairs of
solid copper conductors, size No. 24 AWG to No. 22 AWG.
◉ What shielding is used in UTP cables over 600 pairs? Answer: An
overall aluminum-steel shield.
◉ What standard defines UTP cable categories? Answer: ANSI/TIA
568
◉ What is Cat 3 cable used for? Answer: Ethernet networks up to 10
Mbit/s; not recommended for new installations.
,◉ What is Cat 5e cable's transmission rate? Answer: Up to and
exceeding 100 MHz.
◉ What network speeds is Cat 5e used for? Answer: 100 Mbit/s and
sometimes 1 Gbit/s.
◉ What is Cat 6 cable's transmission rate? Answer: Up to 250 MHz
(1 Gbit/s).
◉ What is Cat 6a cable's transmission rate? Answer: Up to 500 MHz
(10 Gbit/s).
◉ What connector does Cat 6a use? Answer: RJ-45
◉ What is Cat 8 cable's transmission rate? Answer: Up to 2 GHz
(2000 MHz), supporting 25-40 Gbps.
◉ What connectors are used with Cat 8? Answer: RJ-45 for Cat 8.1;
non-RJ-45 for Cat 8.2
◉ Are Cat 7 and 7a cables ANSI/TIA recognized? Answer: No, they
are not currently recognized by ANSI/TIA 568.
, ◉ What is Cat 7 cable's transmission rate? Answer: Up to 600 MHz
(10 Gbit/s or more).
◉ What is Cat 7a cable's transmission rate? Answer: Up to 1,000
MHz (10 Gbit/s or more).
◉ What connectors are used with Cat 7/7a? Answer: GG-45
(backward compatible with RJ-45) or TERA (not compatible).
◉ What coax cable is typically used in video systems? Answer: RG-6
coax (dual-shield, tri-shield, or quad-shield).
◉ What is dual-shield RG-6 construction? Answer: Foil shield
bonded to dielectric core + braid shield + insulation.
◉ What is tri-shield RG-6 construction? Answer: Foil over braid +
foil + cover (foil/braid/foil).
◉ What is quad-shield RG-6 construction? Answer: Braid over foil
over braid + cover (foil/braid/foil/braid).
◉ What must be referenced when selecting/ installing cabling
components? Answer: Job specifications, local codes, and standards.
QUESTION COLLECTION NATIONAL
ELECTRICAL CODE FUNDAMENTALS MODULE
SOLVED ITEMS AND RESPONSE KEY
◉ What are the five main structured cabling subsystems? Answer:
Campus backbone, Equipment/Telecom room, Riser, Horizontal,
Work area
◉ What does the campus backbone subsystem do? Answer: Provides
outside plant connectivity between buildings in a campus
environment. Includes building entrances.
◉ What is the purpose of the equipment room subsystem? Answer:
The area where all subsystems for a building or campus connect (ER,
TR, or MC).
◉ What is the riser subsystem responsible for? Answer:
Connectivity between ERs, TRs, and MCs using blocks, cables,
pathways, and hardware.
◉ What does the horizontal cabling subsystem include? Answer:
Patch panels, cables, and hardware to deliver connectivity to the end
user outlet location.
,◉ What is included in the work area subsystem? Answer: Telecom
outlets at the end user location and patch cables for final
connectivity.
◉ What do structured cabling systems include? Answer: Cable, jacks,
faceplates, patch panels, trays, conduits, boxes, enclosures, support
and suspension systems.
◉ What cable types are used in structured cabling systems? Answer:
UTP, STP, Coaxial, Fiber Optic
◉ What is UTP cable made of? Answer: 1-1,800 twisted pairs of
solid copper conductors, size No. 24 AWG to No. 22 AWG.
◉ What shielding is used in UTP cables over 600 pairs? Answer: An
overall aluminum-steel shield.
◉ What standard defines UTP cable categories? Answer: ANSI/TIA
568
◉ What is Cat 3 cable used for? Answer: Ethernet networks up to 10
Mbit/s; not recommended for new installations.
,◉ What is Cat 5e cable's transmission rate? Answer: Up to and
exceeding 100 MHz.
◉ What network speeds is Cat 5e used for? Answer: 100 Mbit/s and
sometimes 1 Gbit/s.
◉ What is Cat 6 cable's transmission rate? Answer: Up to 250 MHz
(1 Gbit/s).
◉ What is Cat 6a cable's transmission rate? Answer: Up to 500 MHz
(10 Gbit/s).
◉ What connector does Cat 6a use? Answer: RJ-45
◉ What is Cat 8 cable's transmission rate? Answer: Up to 2 GHz
(2000 MHz), supporting 25-40 Gbps.
◉ What connectors are used with Cat 8? Answer: RJ-45 for Cat 8.1;
non-RJ-45 for Cat 8.2
◉ Are Cat 7 and 7a cables ANSI/TIA recognized? Answer: No, they
are not currently recognized by ANSI/TIA 568.
, ◉ What is Cat 7 cable's transmission rate? Answer: Up to 600 MHz
(10 Gbit/s or more).
◉ What is Cat 7a cable's transmission rate? Answer: Up to 1,000
MHz (10 Gbit/s or more).
◉ What connectors are used with Cat 7/7a? Answer: GG-45
(backward compatible with RJ-45) or TERA (not compatible).
◉ What coax cable is typically used in video systems? Answer: RG-6
coax (dual-shield, tri-shield, or quad-shield).
◉ What is dual-shield RG-6 construction? Answer: Foil shield
bonded to dielectric core + braid shield + insulation.
◉ What is tri-shield RG-6 construction? Answer: Foil over braid +
foil + cover (foil/braid/foil).
◉ What is quad-shield RG-6 construction? Answer: Braid over foil
over braid + cover (foil/braid/foil/braid).
◉ What must be referenced when selecting/ installing cabling
components? Answer: Job specifications, local codes, and standards.
