What type of test focuses on finding possible network bottlenecks?

The focus of the test aimed at identifying potential network bottlenecks is rooted in the nature of non-functional testing. Non-functional tests evaluate attributes such as performance, usability, reliability, and security rather than the functional requirements of the software.

In the context of network bottlenecks, performance testing is a significant aspect of non-functional testing, as it assesses how the system behaves under various load conditions and helps identify any weaknesses or limitations in the network that could impede performance. Specifically, during integration, non-functional testing can reveal issues related to how different components of the system communicate over the network, providing insights into potential slowdowns or failures stemming from interactions.

Functional tests, on the other hand, are primarily centered around verifying that the software behaves according to specified requirements. They assess whether the functions of the application are working correctly instead of focusing on how efficiently the application performs under certain conditions like network traffic.

Thus, the correct classification for a test that seeks to uncover potential network bottlenecks aligns seamlessly with non-functional testing during the integration phase, making it the most suitable choice.