PCA (Prometheus Certified Associate) sample exam question with answer 426

Question:
Which of the following is an example of a metric that could be collected to measure the performance of a web application?

1. Number of users who visit the site
2. Amount of disk space used by the server
3. Average response time for a web request
4. Number of CPU cores in the server

Answer:
C - correct answer. Metrics are used to measure the performance of a system. In the context of a web application, the average response time for a web request is a useful metric for understanding how well the application is performing. This metric can be used to identify areas where the application is slow and to measure the impact of changes to the application's code or infrastructure