Telecommunications Technician Certification
Examination Questions With Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. Which device converts analog voice signals into digital signals for
transmission over a digital network?
A. Repeater
B. Router
C. Codec
D. Multiplexer
Answer: C. Codec
Rationale: A codec (coder-decoder) converts analog voice into digital
signals and back again for telecommunications systems. This process
is essential in VoIP, cellular systems, and digital telephony. Repeaters
regenerate signals, routers direct packets, and multiplexers combine
signals for transmission.
, 2. What is the primary function of a repeater in a
telecommunications network?
A. Encrypt data
B. Amplify or regenerate signals
C. Convert digital signals to analog
D. Store network traffic
Answer: B. Amplify or regenerate signals
Rationale: Repeaters extend transmission distance by regenerating
weakened signals. In digital systems, repeaters reconstruct the signal
to reduce distortion and noise accumulation. They do not store,
encrypt, or convert signal formats.
3. Which transmission medium is most resistant to electromagnetic
interference?
A. Twisted-pair cable
B. Coaxial cable
C. Fiber-optic cable
D. Copper wire
Answer: C. Fiber-optic cable
,Rationale: Fiber-optic cables transmit data using light instead of
electrical signals, making them immune to electromagnetic
interference (EMI). Copper-based cables are susceptible to EMI from
motors, power lines, and radio equipment.
4. What does the acronym LAN stand for?
A. Local Access Node
B. Local Area Network
C. Long Area Network
D. Limited Access Network
Answer: B. Local Area Network
Rationale: A LAN is a Local Area Network designed to connect devices
within a relatively small geographic area such as an office, school, or
home. LANs enable resource sharing and local communications.
5. Which tool is commonly used to terminate twisted-pair cables
onto patch panels?
A. Crimping tool
B. Punch-down tool
, C. Cable stripper
D. Tone generator
Answer: B. Punch-down tool
Rationale: A punch-down tool inserts and trims wires into insulation
displacement connectors on patch panels and keystone jacks.
Crimping tools are used for connectors like RJ-45 plugs.
6. What is the standard connector used for Ethernet twisted-pair
cables?
A. BNC
B. SC
C. RJ-45
D. F-type
Answer: C. RJ-45
Rationale: RJ-45 connectors are standard for Ethernet networking over
twisted-pair cables. BNC connectors are used with coaxial systems,
while SC connectors are associated with fiber optics.
7. Which networking device forwards packets based on IP
addresses?
Examination Questions With Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. Which device converts analog voice signals into digital signals for
transmission over a digital network?
A. Repeater
B. Router
C. Codec
D. Multiplexer
Answer: C. Codec
Rationale: A codec (coder-decoder) converts analog voice into digital
signals and back again for telecommunications systems. This process
is essential in VoIP, cellular systems, and digital telephony. Repeaters
regenerate signals, routers direct packets, and multiplexers combine
signals for transmission.
, 2. What is the primary function of a repeater in a
telecommunications network?
A. Encrypt data
B. Amplify or regenerate signals
C. Convert digital signals to analog
D. Store network traffic
Answer: B. Amplify or regenerate signals
Rationale: Repeaters extend transmission distance by regenerating
weakened signals. In digital systems, repeaters reconstruct the signal
to reduce distortion and noise accumulation. They do not store,
encrypt, or convert signal formats.
3. Which transmission medium is most resistant to electromagnetic
interference?
A. Twisted-pair cable
B. Coaxial cable
C. Fiber-optic cable
D. Copper wire
Answer: C. Fiber-optic cable
,Rationale: Fiber-optic cables transmit data using light instead of
electrical signals, making them immune to electromagnetic
interference (EMI). Copper-based cables are susceptible to EMI from
motors, power lines, and radio equipment.
4. What does the acronym LAN stand for?
A. Local Access Node
B. Local Area Network
C. Long Area Network
D. Limited Access Network
Answer: B. Local Area Network
Rationale: A LAN is a Local Area Network designed to connect devices
within a relatively small geographic area such as an office, school, or
home. LANs enable resource sharing and local communications.
5. Which tool is commonly used to terminate twisted-pair cables
onto patch panels?
A. Crimping tool
B. Punch-down tool
, C. Cable stripper
D. Tone generator
Answer: B. Punch-down tool
Rationale: A punch-down tool inserts and trims wires into insulation
displacement connectors on patch panels and keystone jacks.
Crimping tools are used for connectors like RJ-45 plugs.
6. What is the standard connector used for Ethernet twisted-pair
cables?
A. BNC
B. SC
C. RJ-45
D. F-type
Answer: C. RJ-45
Rationale: RJ-45 connectors are standard for Ethernet networking over
twisted-pair cables. BNC connectors are used with coaxial systems,
while SC connectors are associated with fiber optics.
7. Which networking device forwards packets based on IP
addresses?
