Explain Compatibility Testing with an example.

Compatibility testing is to evaluate the application compatibility with the computing environment like Operating System, Database, Browser compatibility, Backwards compatibility, Computing capacity of the Hardware Platform and compatibility of the Peripherals.

Ex : If Compatibility testing is done on a Game application, before installing a game on a computer, its compatibility is checked with the computer specification that whether it is compatible with the computer having that much of specification or not.

What is Traceability Matrix ?

Traceability Matrix is a document used for tracking the requirement, Test cases and the defect. This document is prepared to make the clients satisfy that the coverage done is complete as end to end, This document consists of Requirement/Base line doc Ref No., Test case/Condition, Defects/Bug id. Using this document the person can track the Requirement based on the Defect id.

Explain Load, Performance, Stress Testing with an example

Load Testing and Performance Testing are commonly said as positive testing where as Stress Testing is said to be as negative testing.

Say for example if there is an application which can handle 25 simultaneous user logins at a time. In load testing we will test the application for 25 users and check how application is working in this stage, in performance testing we will concentrate on the time taken to perform the operation. Where as in stress testing we will test with more users than 25 and the test will continue to any number and we will check where the application is cracking the Hardware resources.