Tactical Communication Practice Test

What is used to select Plain Text (PT) non-encrypted or Cipher Text (CT) encrypted communication?

1. Cipher Switch

2. Encryption Key

3. Signal Booster

4. Communication Protocol

The correct answer is: Cipher Switch

The correct answer relates to the function of a cipher switch in communication systems. A cipher switch is specifically designed to toggle between different modes of communication: it can select whether to send information in plain text, which is not encrypted and can be easily read, or in cipher text, which is encrypted and more secure from interception. This capability is essential in tactical communication scenarios, where the nature of the information being communicated may need to change based on operational needs or security protocols. By using a cipher switch, operators can effectively manage the security level of their communications, ensuring that sensitive information is protected when necessary, while still allowing for unencrypted communication when appropriate. In contrast, options such as an encryption key are integral to the encryption and decryption process itself but do not facilitate the selection between plain text and cipher text. A signal booster is focused on amplifying signals for better transmission quality rather than changing the mode of communication. Similarly, a communication protocol outlines the rules and conventions for communication between devices but doesn't provide the capability to switch between encrypted and unencrypted formats. Thus, the cipher switch is directly relevant to the selection process in tactical communications.