Which type of testing is used to ascertain the support for the system?

Support testing typically refers to system testing, which evaluates the overall functionality and performance of a system in a controlled environment. This type of testing ensures that the system meets specified requirements and is capable of handling expected user loads and operational conditions. Additionally, it may involve user acceptance testing (UAT) to gather feedback from end-users on the system's usability and support. These tests help identify any issues that could affect the system's reliability and supportability.