What is Black Box testing? List different techniques of Black Box testing.

Black Box Testing: Black Box testing involves looking at the specifications and does not require examining the code of the program. It is done from customer’s point of view. The testers know the input and expected output. They will check whether with given input they are getting expected output or not.
                                                        OR
Black box testing is a software testing method which is used to test the software without knowing the internal structure of code or program.

Different techniques of Black Box test are:

1. Requirement base testing
2. Positive negative testing
3. Boundary value analysis
4. Decision tables
5. Equivalence partitioning
6. State based testing
7. Compatibility testing
8. User documentation testing
9. Domain testing