PCA (Prometheus Certified Associate) sample exam question with answer 1

Question
Which of the following metrics is used to measure the percentage of time that a server is busy?

1. Memory usage
2. CPU usage
3. Request duration
4. Disk I/O

Answer:
B - CPU usage is used to measure the percentage of time that a server is busy. This metric helps in identifying the load on the server and helps in capacity planning.