Which test does CMWS perform to verify system operation and isolate failures?

The correct answer is BIT, which stands for Built-In Test. This test is designed to verify the proper operation of a system or component and to troubleshoot potential failures. BIT is typically integrated into the system and allows for continuous or periodic testing without needing to remove the system from operation. This capability is essential for identifying any issues promptly and ensuring system reliability, especially in complex systems where maintaining operation is critical.

In contrast, the other tests mentioned serve different purposes. For example, System Integration Testing (SIT) focuses on verifying interactions between integrated components or systems but does not necessarily isolate failures within a single component. Meanwhile, Maintenance Test (MIT) and Factory Acceptance Test (FAT) are conducted at different stages of a product’s lifecycle. MIT is aimed at testing the system in a maintenance context, while FAT is performed to verify that the system meets the specified requirements before it is delivered. None of these tests are specifically designed for ongoing operational verification and failure isolation in the manner that BIT is.