Army Signal Corps Technical Exam Questions
With Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. What is the primary role of the Army Signal Corps?
A. Medical evacuation
B. Intelligence analysis
C. Establishing and maintaining communications systems
D. Artillery targeting
Rationale: The Signal Corps is responsible for ensuring secure
and reliable communications across military units using radio,
satellite, and network systems.
2. Which frequency band is commonly used for long-range HF
communication?
A. VHF
B. UHF
C. SHF
D. HF (High Frequency)
Rationale: HF bands support long-range communication via
, skywave propagation, allowing signals to travel beyond the
horizon.
3. What does FM stand for in radio communications?
A. Fixed Mode
B. Frequency Mixing
C. Frequency Modulation
D. Fast Modulation
Rationale: Frequency Modulation encodes information by
varying the frequency of the carrier wave.
4. Which device amplifies weak radio signals for retransmission?
A. Router
B. Switch
C. Repeater
D. Encoder
Rationale: A repeater receives a weak signal, amplifies it, and
retransmits it to extend communication range.
5. What is the purpose of encryption in military communications?
A. Increase signal range
B. Reduce bandwidth
C. Secure transmitted information from interception
D. Improve antenna gain
, Rationale: Encryption ensures that intercepted communications
cannot be understood by unauthorized parties.
6. Which layer of the OSI model handles routing?
A. Physical
B. Data Link
C. Transport
D. Network Layer
Rationale: The Network Layer determines logical addressing and
routing of data packets.
7. What does a SATCOM system use to transmit signals?
A. Ground wires
B. Fiber optics only
C. Artificial satellites
D. Bluetooth nodes
Rationale: SATCOM systems use satellites to relay
communication over long distances.
8. What is the function of a modem?
A. Store data
B. Encrypt data only
C. Modulate and demodulate signals
D. Increase antenna height
, Rationale: A modem converts digital signals to analog and vice
versa for transmission.
9. Which term refers to the strength of a radio signal?
A. Latency
B. Bandwidth
C. Signal amplitude
D. Throughput
Rationale: Signal amplitude corresponds to the strength or
power of a transmitted signal.
10. What does LOS stand for in communications?
A. Line of System
B. Level of Signal
C. Line of Sight
D. Loss of Signal
Rationale: Line of Sight communication requires a direct,
unobstructed path between transmitter and receiver.
11. Which encryption standard is widely used for secure data
transmission?
A. ASCII
B. HTTP
C. AES (Advanced Encryption Standard)
With Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. What is the primary role of the Army Signal Corps?
A. Medical evacuation
B. Intelligence analysis
C. Establishing and maintaining communications systems
D. Artillery targeting
Rationale: The Signal Corps is responsible for ensuring secure
and reliable communications across military units using radio,
satellite, and network systems.
2. Which frequency band is commonly used for long-range HF
communication?
A. VHF
B. UHF
C. SHF
D. HF (High Frequency)
Rationale: HF bands support long-range communication via
, skywave propagation, allowing signals to travel beyond the
horizon.
3. What does FM stand for in radio communications?
A. Fixed Mode
B. Frequency Mixing
C. Frequency Modulation
D. Fast Modulation
Rationale: Frequency Modulation encodes information by
varying the frequency of the carrier wave.
4. Which device amplifies weak radio signals for retransmission?
A. Router
B. Switch
C. Repeater
D. Encoder
Rationale: A repeater receives a weak signal, amplifies it, and
retransmits it to extend communication range.
5. What is the purpose of encryption in military communications?
A. Increase signal range
B. Reduce bandwidth
C. Secure transmitted information from interception
D. Improve antenna gain
, Rationale: Encryption ensures that intercepted communications
cannot be understood by unauthorized parties.
6. Which layer of the OSI model handles routing?
A. Physical
B. Data Link
C. Transport
D. Network Layer
Rationale: The Network Layer determines logical addressing and
routing of data packets.
7. What does a SATCOM system use to transmit signals?
A. Ground wires
B. Fiber optics only
C. Artificial satellites
D. Bluetooth nodes
Rationale: SATCOM systems use satellites to relay
communication over long distances.
8. What is the function of a modem?
A. Store data
B. Encrypt data only
C. Modulate and demodulate signals
D. Increase antenna height
, Rationale: A modem converts digital signals to analog and vice
versa for transmission.
9. Which term refers to the strength of a radio signal?
A. Latency
B. Bandwidth
C. Signal amplitude
D. Throughput
Rationale: Signal amplitude corresponds to the strength or
power of a transmitted signal.
10. What does LOS stand for in communications?
A. Line of System
B. Level of Signal
C. Line of Sight
D. Loss of Signal
Rationale: Line of Sight communication requires a direct,
unobstructed path between transmitter and receiver.
11. Which encryption standard is widely used for secure data
transmission?
A. ASCII
B. HTTP
C. AES (Advanced Encryption Standard)
