Telecommunications Technician Practice
Exam Questions With Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of a telecommunications system?
A. Store digital images
B. Transmit information over distances
C. Manufacture electronic devices
D. Encrypt software applications
Rationale: Telecommunications systems are designed to transmit voice,
data, and video signals across distances using wired or wireless media.
2. Which device converts analog signals into digital signals?
A. Router
B. Switch
C. Modem
D. Hub
Rationale: A modem modulates and demodulates signals, converting
analog signals to digital and vice versa.
3. What does CAT5e cable primarily support?
,A. Fiber-only transmission
B. Ethernet networking up to 1 Gbps
C. Satellite communication
D. Power distribution
Rationale: CAT5e Ethernet cable supports gigabit speeds over copper
wiring.
4. Which tool is used to test cable continuity?
A. Spectrum analyzer
B. Multimeter
C. Tone generator
D. Oscilloscope
Rationale: A multimeter checks electrical continuity and resistance in
cables.
5. What is the function of a router?
A. Regenerates signals
B. Converts fiber to copper
C. Directs data between networks
D. Amplifies wireless signals
Rationale: Routers forward data packets between different networks
using IP addresses.
,6. What type of cable is most immune to electromagnetic
interference?
A. Coaxial cable
B. Twisted pair
C. Fiber optic cable
D. Copper wire
Rationale: Fiber optic cables use light signals, making them immune to
EMI.
7. What does RJ45 refer to?
A. Fiber connector
B. Ethernet connector type
C. Power adapter
D. Wireless protocol
Rationale: RJ45 is the standard connector used for Ethernet networking.
8. Which protocol is used for email transmission?
A. HTTP
B. FTP
C. SMTP
D. SNMP
Rationale: SMTP is used for sending email across networks.
9. What is the function of a switch in networking?
, A. Connect different networks
B. Connect devices within the same network
C. Provide internet service
D. Encrypt data
Rationale: Switches connect devices within a LAN and forward data
based on MAC addresses.
10. What does fiber optic transmission use to carry data?
A. Electrical signals
B. Radio waves
C. Light pulses
D. Magnetic fields
Rationale: Fiber optics transmit data using light through glass or plastic
fibers.
11. What is bandwidth?
A. Cable thickness
B. Data transmission capacity
C. Signal encryption type
D. Router speed limit
Rationale: Bandwidth is the maximum data transfer rate of a network.
12. Which device strengthens weak signals in a network?
Exam Questions With Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of a telecommunications system?
A. Store digital images
B. Transmit information over distances
C. Manufacture electronic devices
D. Encrypt software applications
Rationale: Telecommunications systems are designed to transmit voice,
data, and video signals across distances using wired or wireless media.
2. Which device converts analog signals into digital signals?
A. Router
B. Switch
C. Modem
D. Hub
Rationale: A modem modulates and demodulates signals, converting
analog signals to digital and vice versa.
3. What does CAT5e cable primarily support?
,A. Fiber-only transmission
B. Ethernet networking up to 1 Gbps
C. Satellite communication
D. Power distribution
Rationale: CAT5e Ethernet cable supports gigabit speeds over copper
wiring.
4. Which tool is used to test cable continuity?
A. Spectrum analyzer
B. Multimeter
C. Tone generator
D. Oscilloscope
Rationale: A multimeter checks electrical continuity and resistance in
cables.
5. What is the function of a router?
A. Regenerates signals
B. Converts fiber to copper
C. Directs data between networks
D. Amplifies wireless signals
Rationale: Routers forward data packets between different networks
using IP addresses.
,6. What type of cable is most immune to electromagnetic
interference?
A. Coaxial cable
B. Twisted pair
C. Fiber optic cable
D. Copper wire
Rationale: Fiber optic cables use light signals, making them immune to
EMI.
7. What does RJ45 refer to?
A. Fiber connector
B. Ethernet connector type
C. Power adapter
D. Wireless protocol
Rationale: RJ45 is the standard connector used for Ethernet networking.
8. Which protocol is used for email transmission?
A. HTTP
B. FTP
C. SMTP
D. SNMP
Rationale: SMTP is used for sending email across networks.
9. What is the function of a switch in networking?
, A. Connect different networks
B. Connect devices within the same network
C. Provide internet service
D. Encrypt data
Rationale: Switches connect devices within a LAN and forward data
based on MAC addresses.
10. What does fiber optic transmission use to carry data?
A. Electrical signals
B. Radio waves
C. Light pulses
D. Magnetic fields
Rationale: Fiber optics transmit data using light through glass or plastic
fibers.
11. What is bandwidth?
A. Cable thickness
B. Data transmission capacity
C. Signal encryption type
D. Router speed limit
Rationale: Bandwidth is the maximum data transfer rate of a network.
12. Which device strengthens weak signals in a network?
