What types of non-functional testing do you know?

Non-functional testing focuses on verifying system characteristics not directly related to its functionality. The main types of non-functional testing:

• Performance Testing: Checking speed, response time, and throughput.
• Load Testing: Assessing system behavior under expected load.
• Stress Testing: Testing stability under extreme loads.
• Security Testing: Checking for vulnerabilities, authentication, and authorization.
• Usability Testing: Evaluating interface ease of use and intuitiveness.
• Compatibility Testing: Verifying operation across different devices, browsers, and OS.
• Reliability Testing: Ensuring stability and fault tolerance.
• Scalability Testing: Assessing the system's ability to expand.
• Availability Testing: Checking the system's uptime.

Each type helps ensure the system meets quality requirements beyond just functionality.