Which type of test relates to verifying non-functional aspects of software?

The verification of non-functional aspects of software primarily involves assessing qualities such as performance, usability, reliability, and security. A performance test specifically evaluates how the software behaves under various conditions, such as load and stress, and it looks into aspects like response times, throughput, and resource usage. This type of testing is crucial for understanding how well a system performs in real-world scenarios and whether it meets the specified performance criteria.

In contrast, the other tests mentioned serve different purposes. Integration tests focus on verifying the interaction between combined components or systems, often emphasizing functional correctness rather than non-functional attributes. Component tests are designed to test individual components in isolation, again primarily targeting functional requirements. Acceptance tests are typically conducted to determine whether the overall system meets business requirements and is acceptable for delivery, which can include some non-functional aspects but are largely centered around functional validation.

Overall, performance testing stands out as the most relevant type for verifying non-functional characteristics of software, ensuring the system can deliver the desired service level under specific conditions.