OSH Security Practice Test

The 10-code for acknowledgment is indeed 10-4. This code is widely recognized as an affirmative response or acknowledgment of a message received. It is commonly used in law enforcement and emergency communications to confirm that information has been understood and accepted.

In this particular context, acknowledging receipt of a message is crucial for effective communication, especially in situations where clarity and quick response are needed. The use of 10-codes helps to streamline communication by minimizing misunderstandings and ensuring that everyone is on the same page.

The other options represent different meanings in the 10-codes system. For example, 10-2 generally signifies good reception, while 10-7 indicates an out-of-service status, and 10-8 means in-service. Each of these codes has specific applications and is not interchangeable with acknowledgment. Thus, 10-4 is the correct choice for acknowledgment.