PCA (Prometheus Certified Associate) sample exam question with answer 382

Question:
Which of the following is a benefit of the push model of metrics ingestion?

1. Push-based monitoring does not scale
2. All monitoring targets can configure the same centralized point of ingestion
3. Push-based monitoring provides a built-in way to determine if a service is down
4. There is a slightly lower probability of DDoS-ing your monitoring compared to the pull model

Answer:
B - is the correct answer
A - is incorrect as push-based monitoring can scale
C - is incorrect. Unless the centralized ingestion point knows exactly which targets should be sending it data, it cannot determine which targets are down based on which ones do not send data during a certain time
D - is incorrect as there is actually a slightly higher probability of DDoS-ing your monitoring in the push model compared to the pull model