Chapter 6: Cloud native observability

Question 1, answer D

Telemetry is log data, metrics, and traces that are output from a system.

Question 2, answers A, B, C

The three main classes of telemetry data are logs, metrics, and traces.

Question 3, answer D

Prometheus stores data in a timeseries format.

Question 4, answer B

Telemetry is used to troubleshoot and tweak performance of a system.

Question 5, answers B

The OpenTelemetry projects provides instrumentation and specifications for cloud native observability.

Question 6, answer B

Log data is application output that is usually output as text or JSON.

Question 7, answer C

Log events are often categorised from lowest to highest severity in the following order: info > warning > error > critical.

Question 8, answer A

High verbosity generates more output than low verbosity.

Question 9, answer C

Debug level is the most verbose and intended to dump out as much data as possible.

Question 10, answers...