PCA (Prometheus Certified Associate) sample exam question with answer 357

Question:
What is the difference between an agent deployment of Prometheus and a regular deployment?

1. The Agent mode of Prometheus enables querying, alerting and local storage whereas the normal mode of Prometheus disables each of these
2. There is no such thing as Prometheus agent mode
3. The Agent mode optimizes Prometheus for the remote read use case
4. The Agent mode of Prometheus disables querying, alerting and local storage whereas the normal mode of Prometheus has each of these enabled

Answer:
D - is the correct answer. More at agent
A - is incorrect as the Agent mode actually disables each of these features whereas they are normally enabled
B - is incorrect as there is such a mode
C - is incorrect as the Agent mode actually optimizes for the remote write use case