Which statement correctly contrasts Factory Acceptance Test (FAT) and Site Acceptance Test (SAT)?

• A. Factory Acceptance Test tests the system in the factory; Site Acceptance Test verifies performance after installation in the real environment
• B. Site Acceptance Test verifies performance after installation in the real environment
• C. SAT is before manufacturing
• D. FAT tests only software

Answer: (B)

Understand the timing and location of acceptance testing. Factory Acceptance Test is carried out at the vendor’s factory to verify the system meets specifications before it ships. Site Acceptance Test is performed on the actual installation site after the system is in place to confirm it performs correctly in the real environment and with site conditions and interfaces.

The best choice states that the Site Acceptance Test verifies performance after installation in the real environment. This directly highlights the on-site, post-install verification that distinguishes SAT from FAT, which is the core contrast being tested.

Others are off in key ways: saying SAT happens before manufacturing is false, and claiming FAT tests only software is incorrect because FAT generally covers the system as a whole in factory conditions, not just software. The first option mentions both tests but doesn’t emphasize the on-site performance verification as clearly as the chosen statement.