6.8 User Level Testing:

 User threads testing
The testing includes the simultaneous access of all the modules of the system by different users. This helps in testing of the software in the multi-user environment.
 Stress testing
To test the software of the maximum stress it has to under go during the execution process. And how much load it can withstand.
 Human factor testing
This testing helps in measuring the human error factor which can affect the quality of the project hence can be reduced by taking various precautions.