What aspect of software is evaluated during non-functional testing?

Non-functional testing focuses on how a system operates and meets user expectations in terms of

qualities like:

Performance: Response times, load handling, scalability

Usability: Ease of use, user interface design

Security: Protection against unauthorized access and data breaches

Reliability: System stability and availability

Maintainability: Ease of making changes and updates

Why not the other options?

A . Specific behaviors and outputs of the system: This is the focus of functional testing, which verifies

that the system does what it's supposed to do.

C . The creation of records and setting field values: This is a specific functional aspect of the system.

D . Functional requirements outlined in the design document: These are tested during functional

testing.

Reference: Software testing best practices, ISTQB Foundation Level syllabus