Final answer:
To ensure the CMDB's proper functionality after an upgrade or deployment, regression tests, load testing, and unit tests are the most suitable and commonly used types of tests.
Step-by-step explanation:
The question relates to the validation of a Configuration Management Database (CMDB) after upgrading, deploying new applications, or implementing integrations. To ensure that the CMDB is functioning correctly, several types of tests can be conducted:
Regression tests are used to verify that new changes have not adversely affected existing functionality.
Load testing is important to determine how the system behaves under a heavy load, which could be critical after a new deployment or integration.
Unit tests could be run to assess individual components for specific functionalities. This can be particularly useful after an application upgrade to ensure each module or component of the CMDB works as intended.
While 'quick start tests' could refer to a generic set of tests to quickly check primary functions, they are not a standard testing term in this context. Among the given options, regression tests, load testing, and unit tests are the most appropriate to ensure the CMDB's reliability and performance following changes.