PCA (Prometheus Certified Associate) sample exam question with answer 515

Question:
Which of the following is the BEST definition for telemetry?

1. Time series data
2. Observability
3. Several types of data that work together to provide observability of a system
4. Aggregated logs

Answer:
C - is the correct answer
A - is incorrect as time series data is only one component of telemetry. It also refers to data such as logs and traces
B - is incorrect as observability is the general concept of being able to understand a system given data from that system. Telemetry is the data the enables observability
D - is incorrect as logs are only one component of telemetry. It also refers to data such as time series metrics and traces