What do you know about various types of special tests? Explain them briefly?

Various types of special tests are as follow:

• Peak Load Test - During this test a stress test and performance test are applied aggregate to know the effect.
• Recovery Testing - A system test that forces the software to get fail in a variety of ways and verifies that the recovery is done in proper form is known as recovery testing.
• Security Testing - Security testing verifies that the protection mechanism built into a system will protect the system from improper penetrations into the system. In security testing the tester plays the role of a person who is desiring to penetrate the system or may try to break down the protective measures.
• Stress Testing - Stress tests are designed to take the programs within abnormal situations by providing abnormal stress on the system. The stress testing may demand resources in abnormal quantity, frequency or volume. A variation of stress testing is technique called sensitivity testing. Sensitivity testing attempts to uncover data combinations within valid input classes that may cause instability or improper processing.
• Performance Testing - This type of testing is done to test the performance of a software within a system. Performance testing is often compelled with stress testing and always requires hardware and software for testing.