Technician Licensing Exam Practice

Low Voltage Telecommunications Technician Licensing Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the maximum voltage allowed for low-voltage

telecommunications systems under the NEC?

• 600 volts
• 150 volts
• 300 volts
• 50 volts

Rationale: Low-voltage telecommunications systems are defined

under 150 volts to ground as per NEC Article 725.

• Which color is typically used for telecommunications cables?
• Black
• Red 1 / 4

• Blue
• Orange

Rationale: Blue cables are standard for data/telecommunications

wiring in structured cabling systems.

• What is the standard impedance for twisted pair cables used in

Ethernet networks?

• 50 ohms
• 75 ohms
• 100 ohms
• 150 ohms

Rationale: Cat 5e, Cat 6, and Cat 6A cables have an impedance of 100

ohms for proper signal integrity.

4. Category 6A cables are rated for data transmission speeds up to:

• 100 Mbps
• 1 Gbps
• 10 Gbps
• 40 Gbps

Rationale: Cat 6A cables can handle up to 10 Gigabit Ethernet at 500

MHz bandwidth.

5. The minimum bend radius for a Category 6 cable is:

• One inch
• Two inches
• Four times the cable diameter 2 / 4

• Eight times the cable diameter

Rationale: Industry standards specify a minimum bend radius of four

times the outer cable diameter to prevent performance loss.

• What does PoE stand for?
• Power over Ethernet
• Power over Ethernet
• Port of Entry
• Power off Equipment

Rationale: PoE technology delivers electrical power and data over

standard Ethernet cabling.

• In structured cabling, the main distribution area (MDA) serves which

purpose?

• Connects to user devices directly
• Houses the patch panels only
• Central point for network cross-connects
• Connects to wireless access points only

Rationale: The MDA is the central hub in a data center or building for

cross-connections and backbone cabling.

• What is the standard connector type used for Ethernet cables?
• F-type

B. BNC

C. RJ-45

D. SC 3 / 4

Rationale: RJ-45 connectors are standard for copper-based Ethernet

cabling (Cat 5e, 6, 6A).

• What is the primary purpose of grounding and bonding in

telecommunications systems?

• Reduce noise
• Prevent corrosion
• Ensure safety and minimize electrical hazards
• Increase data speed

Rationale: Grounding and bonding provide safety and minimize risks

from electrical surges and lightning.

• According to ANSI/TIA-568 standards, what color code is used

for Pair 1 in twisted pair cables?

• Blue and White/Blue
• Blue and White/Blue
• Orange and White/Orange
• Green and White/Green

Rationale: Pair 1 (Tip and Ring) uses Blue and White/Blue per T568A

and T568B standards.

• What does the abbreviation "NEC" stand for?
• National Electrical Certification
• National Energy Code
• National Electrical Code
• / 4