What is a beta test?

Answer 1

A beta version or beta release (pronounced "beetah" or "bayta") usually represents the first version of a computer program that implements all features in the initial software requirements specification. It is likely to be unstable but useful for internal demonstrations and previews to select customers, but not yet ready for release. Some developers refer to this stage as a preview, as a technical preview (TP) or as an early access.

Answer 2

it is the beta type also known as the secondary icomplete diagnostics module.