Vol 2 Unit 4

14 Questions | By Kevin | Updated: Mar 15, 2022 | Attempts: 32

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1.

The process of unscrambling encrypted information so that it is intelligible is known as
- A.
  
  Decryption.
- B.
  
  Encryption.
- C.
  
  Cryptography.
- D.
  
  Cryptanalysis.
Correct Answer
A. Decryption.
2.

Which type of cryptographic algorithm permits the encryption key to be public?
- A.
  
  Asymmetric.
- B.
  
  Symmetric.
- C.
  
  Encoder.
- D.
  
  Secret.
Correct Answer
A. Asymmetric.
3.

Which secure communications device operates by simple sliding the key tape into the reader?
- A.
  
  KYK-13.
- B.
  
  KOI-18.
- C.
  
  KY-57.
- D.
  
  KY-99A.
Correct Answer
B. KOI-18.
4.

The common name for the method of changing encryption keys over the radio channel in a two-way radio system is called
- A.
  
  Over-the-air rekeying (OTAR).
- B.
  
  Asymmetric.
- C.
  
  Symmetric.
- D.
  
  Off-line.
Correct Answer
A. Over-the-air rekeying (OTAR).
5.

Which type of conventional land mobile radio (LMR) device maximizes the communications distance between lower-powered equipment items?
- A.
  
  Mobile.
- B.
  
  Portable.
- C.
  
  Repeater.
- D.
  
  Base station.
Correct Answer
C. Repeater.
6.

In a land mobile radio (LMR) repeater system, a device that separates and isolates the incoming receive signal from the outgoing transmit signal and vice versa is known as a
- A.
  
  Duplexer.
- B.
  
  Comparator.
- C.
  
  Key-unkey relay.
- D.
  
  Transmit-receive switch.
Correct Answer
A. Duplexer.
7.

Which type of site configuration was designed to provide coverage for a small geographical area?
- A.
  
  Single-site.
- B.
  
  Multi-site.
- C.
  
  Simulcast.
- D.
  
  Multicast.
Correct Answer
A. Single-site.
8.

This provides the interface between dispatch consoles and the central controller in a typical trunking system.
- A.
  
  Modems.
- B.
  
  Access control.
- C.
  
  Switching equipment.
- D.
  
  System management computer.
Correct Answer
C. Switching equipment.
9.

When setting up a trunking network, users with common missions or functions are assigned as
- A.
  
  Nets.
- B.
  
  Channels.
- C.
  
  Talk groups.
- D.
  
  Subscribers.
Correct Answer
C. Talk groups.
10.

Which statement is not a benefit of having a trunking network?
- A.
  
  Selective radio inhibit.
- B.
  
  Faster system access.
- C.
  
  Unbalanced channel loads.
- D.
  
  Better channel efficiency.
Correct Answer
C. Unbalanced channel loads.
11.

This differentiates the enterprise land mobile radio (ELMR) network from a regular trunking or conventional network.
- A.
  
  Advanced encryption standard (AES) encryption.
- B.
  
  Association of Public-Safety Communications Officials (APCO) P25 standard.
- C.
  
  Repeater.
- D.
  
  Centralized core controller.
Correct Answer
D. Centralized core controller.
12.

Which Air Force instruction (AFI) requires communications squadrons to maintain installation notification and warning systems (INWS)?
- A.
  
  AFI 10-2501, Air Force Emergency Management Program.
- B.
  
  AFI 10-2801, Force Development Concepts.
- C.
  
  AFI 33-115, Air Force Information Technology Service Management.
- D.
  
  AFI 33-217, Voice Call Sign Program.
Correct Answer
A. AFI 10-2501, Air Force Emergency Management Program.
13.

In the paint-voice system, this controls the system's signal routing and power distribution.
- A.
  
  Landline board.
- B.
  
  Control board.
- C.
  
  Radio board.
- D.
  
  Encoder.
Correct Answer
B. Control board.
14.

Which is not a major component of the giant-voice system?
- A.
  
  Siren cabinet.
- B.
  
  Siren stack.
- C.
  
  Decoder.
- D.
  
  Encoder.
Correct Answer
C. Decoder.

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Current Version
Mar 15, 2022

Quiz Edited by
ProProfs Editorial Team
Jun 18, 2017

Quiz Created by
Kevin

Vol 2 Unit 4

The process of unscrambling encrypted information so that it is intelligible is known as

Which type of cryptographic algorithm permits the encryption key to be public?

Which secure communications device operates by simple sliding the key tape into the reader?

The common name for the method of changing encryption keys over the radio channel in a two-way radio system is called

Which type of conventional land mobile radio (LMR) device maximizes the communications distance between lower-powered equipment items?

In a land mobile radio (LMR) repeater system, a device that separates and isolates the incoming receive signal from the outgoing transmit signal and vice versa is known as a

Which type of site configuration was designed to provide coverage for a small geographical area?

This provides the interface between dispatch consoles and the central controller in a typical trunking system.

When setting up a trunking network, users with common missions or functions are assigned as

Which statement is not a benefit of having a trunking network?

This differentiates the enterprise land mobile radio (ELMR) network from a regular trunking or conventional network.

Which Air Force instruction (AFI) requires communications squadrons to maintain installation notification and warning systems (INWS)?

In the paint-voice system, this controls the system's signal routing and power distribution.

Which is not a major component of the giant-voice system?