PCA (Prometheus Certified Associate) sample exam question with answer 226

Question:
What type of data is used to define an SLI?

1. Quantitative
2. Customer
3. Qualitative
4. Transient

Answer:
A - is the correct answer
B - is incorrect as SLIs are defined using quantitative data about important aspects of a system such as its availability or latency. They are not defined using customer data
C - is incorrect as SLIs are actually defined using quantitative data. Quantitative data is numerical whereas qualitative is categorical. As SLIs are typically measured over time using metrics (numeric measurements), the data is quantitative
D - is incorrect as transient means temporary. The metrics referenced by an SLI can be stored for as long as necessary and thus are not transient