Systems testing is often performed against the whole platform, and treats the environment as a black box. system integration testing however, acts upon a subset of the whole system, and may mock other platforms, interact with databases, network sockets etc to evoke appropriate responses from the parts being validated.
The objectives of system testing is to validate the public exposed interfaces of the platform, by behaving as an end user, with no privileged access to internal systems. Integration verification attempts to verify that seperate systems operate well together before they're used in the whole system.
manpreet![Tuteehub forum best answer]()
Best Answer
3 years ago
I was asked this question during an interview. My thoughts are SIT is performed on a complete systems and System Testing can be done on a single module as well.