Differentiate between verification and validation.
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Verification
Verification assesses development-phase procedures to see if they adhere to user requirements. For example, static testing is verification. Before validation, verification testing is carried out. It is not related to running the code. It entails tasks including desk checks, walkthroughs, inspections, and reviews. Before the development cycle, the bugs are discovered. It complies with the standards outlined in the SRS paper.
The QA team provides verification, ensuring that the program complies with the specifications as down in the SRS document.
Validation
Validation evaluates the product to ensure it satisfies requirements after the development phase, and after verification.
It uses techniques like non-functional testing, white box testing, and black box testing. The bugs are discovered after the development cycle. It determines whether or not it satisfies the requirements.