1) The document describes various testing documents created at different levels of the project testing process. Test policy and strategy are created by quality control and management, while test plans, cases, scripts, and reports are created by QA engineers.
2) Test documents can be at the company level (policy, strategy) or project level (methodology, plans, cases, scripts, reports). The key documents include test policy, strategy, methodology, plan, cases, scripts, and reports.
3) Test execution involves various levels from initial sanity testing to comprehensive and regression testing to validate requirements and detect defects in builds received from development.