PCA (Prometheus Certified Associate) sample exam question with answer 543

Question:
Which of the following is an example of a trace that could be collected to visualize the flow of requests through a distributed system?

1. A record of all requests made to the system
2. A record of all errors that occur in the system
3. A record of all CPU usage by the system
4. A record of all network traffic to and from the system

Answer:
A - is the correct answer. Traces are used to capture data about the flow of requests through a system. In a distributed system, requests may be routed through multiple services, making it challenging to understand the overall flow of requests. By collecting traces of all requests made to the system, it is possible to visualize the flow of requests and to identify areas where bottlenecks or other issues may be occurring