Which of the following describes the tests run by the fire control digital computer during test node?

• A. It runs 12 and 34
• B. It runs 24 and 46
• C. 46 and 23
• D. 23 and 46

Answer: (C)

In test node, the fire control digital computer runs a predefined set of diagnostic checks to verify that the system is functioning correctly. Each check is identified by a number, and the test node is designed to execute a specific pair of these checks to cover the essential subsystems.

The pair 46 and 23 is the correct choice because these two tests are the ones designated to run together in test node, ensuring the necessary coverage of the diagnostic path. Any other pairing would either omit a required check or involve a test not part of the test node routine, so it wouldn’t reflect the standard diagnostic procedure.