Software Testing and Quality Assurance Questions

Covers the principles, practices, and strategies used to ensure software correctness, reliability, and business value throughout the delivery lifecycle. Key concepts include the distinction between verification and validation, static versus dynamic testing, and the testing pyramid for deciding appropriate test scope at different layers. Describes types and levels of testing such as unit testing, integration testing, system testing, end to end testing, acceptance testing, regression testing, smoke and sanity checks, and performance and load testing. Includes test planning and design topics such as test cases, test scenarios, test suites, test plans, test data management, test environment management, and measures like test coverage and pass rates. Covers defect lifecycle, bug triage, and severity and priority classification, plus the roles and collaboration between quality assurance teams and developers. Explains manual testing versus test automation, test automation strategies and frameworks, test isolation techniques including mocking and stubbing, and tradeoffs between speed, coverage, and maintenance. Describes continuous integration and continuous testing pipelines, automated regression and release testing, production monitoring and error tracking, debugging and incident workflows, and domain specific and cross platform concerns such as browser compatibility, device and hardware checks, and infrastructure for experiments such as A versus B testing. Also addresses tool selection criteria and the business rationale and return on investment for automation and quality practices.