QUESTIONS AND 100% RATED CORRECT ANSWERS | GET IT
CORRECT!(ALREADY GRADED A+)
1
Which of the following is the most important safety practice when working
with electrical systems?
A) Wearing gloves.
B) Always assuming a circuit is live until proven otherwise.
C) Working with a partner.
D) Using insulated tools.
E) Disconnecting power at the nearest outlet.
Correct Answer: B) Always assuming a circuit is live until proven
otherwise.
Rationale: Assuming a circuit is live and taking precautions until
proper lockout/tagout procedures are completed and verified is the
foundational principle of electrical safety.
2
According to industry standards, what is the maximum permissible pulling
tension for a 4-pair UTP cable?
A) 15 lbf (67 N)
B) 25 lbf (111 N)
C) 30 lbf (133 N)
D) 40 lbf (178 N)
E) 50 lbf (222 N)
Correct Answer: B) 25 lbf (111 N)
Rationale: The maximum pulling tension for 4-pair UTP cable is 25 lbf
(111 N) to prevent damage to the cable's internal structure and
performance characteristics.
3
Which of the following describes the purpose of "bonding" in a structured
cabling system?
A) To connect all network devices to a central server.
,B) To permanently join metallic system components to form an electrically
conductive path.
C) To prevent electromagnetic interference between cables.
D) To seal conduit connections against moisture.
E) To provide a secure physical attachment for cables.
Correct Answer: B) To permanently join metallic system components to
form an electrically conductive path.
Rationale: Bonding creates a low-impedance electrical path to ensure
that all metallic components are at the same electrical potential,
reducing differences that could cause electric shock or equipment
damage from ground loops or transient voltages.
4
What is the minimum bending radius for 4-pair UTP cable, when not subject
to tensile load, as a multiple of the cable's outside diameter (OD)?
A) 2 times OD
B) 4 times OD
C) 6 times OD
D) 8 times OD
E) 10 times OD
Correct Answer: B) 4 times OD
Rationale: When not subject to tensile load (after installation), the
minimum bending radius for 4-pair UTP cable is generally 4 times its
outside diameter (OD). During installation (under tensile load), it's
typically 8 times OD.
5
Which of the following fire ratings for cables indicates it is suitable for use in
plenums or other spaces used for environmental air handling?
A) CMR (Riser)
B) CM (General Purpose)
C) CMP (Plenum)
,D) CMG (General Purpose)
E) CMX (Residential)
Correct Answer: C) CMP (Plenum)
Rationale: CMP (Communications Plenum) rated cables have a low
smoke and low flame spread rating, making them suitable for
installation in plenum spaces, which are air-handling areas above
suspended ceilings or below raised floors.
6
When terminating a UTP cable to an RJ-45 connector, which wiring standard
is commonly used for commercial installations?
A) EIA/TIA 568-A
B) EIA/TIA 568-B
C) IEEE 802.3
D) ISO/IEC 11801
E) NFPA 70
Correct Answer: B) EIA/TIA 568-B
Rationale: While both 568-A and 568-B are valid, EIA/TIA 568-B is the
more commonly implemented wiring standard for RJ-45 terminations
in commercial structured cabling installations.
7
What tool is specifically designed to strip the jacket from various types of
copper cable without damaging the inner conductors?
A) Diagonal cutters
B) Punchdown tool
C) Coaxial cable stripper
D) UTP cable stripper
E) Wire crimper
Correct Answer: D) UTP cable stripper
Rationale: A UTP cable stripper is specifically designed with
adjustable blades or specific settings to safely remove the outer
, jacket of UTP cable without nicking or damaging the insulation of
the twisted pairs.
8
Which component of a structured cabling system extends from the
telecommunications room (TR) to the work area (WA)?
A) Backbone cabling
B) Entrance facility
C) Horizontal cabling
D) Equipment cabling
E) Patch cords
Correct Answer: C) Horizontal cabling
Rationale: Horizontal cabling (often UTP or fiber) runs from the
horizontal cross-connect in the telecommunications room directly to
the telecommunications outlet/connector in the work area.
9
What is the primary function of a "loopback adapter" when testing network
cables?
A) To measure cable length.
B) To check for wire map errors.
C) To verify transmit and receive functionality within a port.
D) To test for continuity in a single wire.
E) To certify cable performance to Category standards.
Correct Answer: C) To verify transmit and receive functionality within
a port.
Rationale: A loopback adapter tests the functionality of a network
port by sending a signal out and receiving it back on the same port,
verifying the transmit and receive pairs are working.
10
When installing a coaxial cable, what is crucial to avoid for maintaining signal
quality?