ACP 125 (Revision F), Communication Instructions Radiotelephone Procedures “Chapter 2”

Question 1

1. What is un-enciphered communication medium is the least secure of all means of communications? (Page 2-1)

Answer 1

Radio

Question 2

2. What is the collective title for the measures taken to protect all aspects of communications in order to deny information and intelligence to the enemy?
   (Page 2-3)

Answer 2

Communications Security (COMSEC)

Question 3

3. What is that component of COMSEC which includes all measures designed to protect Allied radio transmissions from enemy interception, analysis and deception?
   (Page 2-3)

Answer 3

Transmission Security

Question 4

4. What is the act of searching for, listening to and recording radio communications and electronic transmissions for the purpose of obtaining information?
   (Page 2-3)

Answer 4

Interception

Question 5

5. What is the examination and interpretation of intercepted radio communications traffic and electronic transmissions for the purpose of obtaining intelligence?
   (Page 2-4)

Answer 5

Analysis

Question 6

6. What is the introduction of a false transmission into a communications system, by imitating an authentic transmission, with the intention to deceive or create confusion?
   (Page 2-4)

Answer 6

Deception

Question 7

7. What is the only conclusive defense against interception?

Page 2-4

Answer 7

Radio Silence

Question 8

8. Individual transmission should not exceed how many seconds and, whenever possible, terminated with the proword OUT?
   (Page 2-5)

Answer 8

20

Question 9

9. Whether allied or those of an adversary, what are the most sensitive information sent over radio and are an unrivaled source of intelligence?
   (Page 2-6)

Answer 9

Locations

Question 10

10. What are designed to provide security protection for sensitive short-term tactical information where speed and simplicity of operation are the overriding considerations?
    (Page 2-8)

Answer 10

Low Level Codes

Question 11

11. What provides useful information for an enemy to use in a timely way (his/her response time can be expected to be as little as a few minutes) to our disadvantage?
    (Page 2-8)

Answer 11

Exploitable Text

Question 12

12. In training, there is a need to differentiate between exercise play and events, which require action outside the context of the exercise; conventionally this is known as “real” activity. In order to highlight the differences between real and other messages, what proword is used?
    (Page 2-10)

Answer 12

NO PLAY

Question 13

13. What is a security aid designed to protect Allied communications against deception from fraudulent transmissions by unauthorized persons?
    (Page 2-10)

Answer 13

Authentication

Question 14

14. What is a single word with a pre-arranged meaning, used to establish a condition, an alert, or to initiate the implementation of a plan or operation?
    (Page 2-10)

Answer 14

Codeword

Question 15

15. What is a unique, daily changing group of four random letters used to disguise a command, formation, unit or sub unit?
    (Page 2-11)

Answer 15

Address Group

Question 16

16. What is a combination of letters and figures that identify a communication facility, an organization, or an individual on a radio net?
    (Page 2-11)

Answer 16

Callsign