Questions And Correct Answers (Verified ) Newest
Update 2026/2027 | Graded A+ (100% Solved)
1. Which type of cabling is most commonly used for horizontal
runs in commercial buildings? a. Coaxial
b. Fiber optic
c. Twisted pair copper
d. HDMI
Twisted pair copper, specifically Category 5e/6, is standard for
horizontal cabling in commercial buildings.
2. What is the maximum horizontal cable length for a standard
Category 6 installation? a. 50 meters
b. 90 meters
c. 100 meters
d. 120 meters
The TIA/EIA standards specify a maximum horizontal cable length
of 90 meters for Cat6.
3. What is the primary purpose of a telecommunications room
(TR)?
a. Store extra cables
b. Serve as a centralized point for connecting horizontal and
backbone cabling
, c. Provide a workspace for technicians
d. House electrical panels
Telecommunications rooms are used to connect backbone and
horizontal cabling for distribution.
5. What is the minimum bend radius for Category 6 cable?
a. 2x cable diameter
b. 4x cable diameter
c. 8x cable diameter
d. 10x cable diameter
To prevent performance degradation, TIA/EIA standards require an
8x cable diameter minimum bend radius.
6. Which type of fire rating is required for riser cables between
floors?
a. Plenum
b. Riser
c. General purpose
d. Industrial
Riser-rated cables are designed for vertical runs between floors
and prevent flame propagation.
7. What is the primary advantage of fiber optic cable over
copper cabling?
a. Easier termination
b. Lower cost
c. Higher bandwidth and longer distances
d. Flexibility
Fiber optic supports higher bandwidth and longer runs without
signal degradation compared to copper.
, 8. Which tool is used to verify cable continuity?
a. Punch-down tool
b. Crimping tool
c. Cable tester
d. Wire stripper
Cable testers check for continuity, opens, shorts, and miswires.
4. Which of the following is a common color for a
telecommunications grounding bus bar (TGB)? a. Blue
b. Red
c. Yellow
d. Green
Green is the standard color for grounding conductors and bus bars
in structured cabling.
9. What is the typical connector used for Category 6 twisted-
pair cable terminations? a. BNC
b. LC
c. RJ-45
d. SC
RJ-45 modular connectors are standard for Cat5e/Cat6
terminations.
10. How often should horizontal cabling be supported in a
ceiling or wall? a. Every 1 foot
b. Every 2 feet
c. Every 4.5 feet