What operational testers use to determine whether a system meets operational parameters?

Operational testers use a variety of methods and tools, including performance testing, usability testing, and load testing, to evaluate whether a system meets operational parameters. They assess metrics such as response time, throughput, and resource utilization under different conditions. Additionally, they may conduct functional tests to ensure that the system behaves as expected in real-world scenariOS. The results are compared against predefined criteria to determine compliance with operational standards.