SRE Observability & Logging 4

Question 1

Which of the following best describes 'RED' method metrics in SRE observability?

Accepted Answer

Rate, Errors, Duration

Answer

The RED method focuses on Rate (requests per second), Errors (failed requests), and Duration (distribution of request latencies) for services.

Question 2

What distinguishes a 'push' model from a 'pull' model in metrics collection?

Accepted Answer

In push, services send metrics to the collector; in pull, the collector scrapes targets

Answer

In a push model, applications actively send metrics to a backend (e.g., StatsD, InfluxDB), while in a pull model, the backend scrapes endpoints (e.g., Prometheus).

Question 3

A service emits logs with a correlation ID. What is the primary benefit of including this ID?

Accepted Answer

It allows logs from different services handling the same request to be linked together

Answer

A correlation ID ties together all log entries across services for a single request, enabling end-to-end request tracing through logs.

Question 4

Which OpenTelemetry component is responsible for receiving, processing, and exporting telemetry data?

Accepted Answer

Collector

Answer

The OpenTelemetry Collector receives telemetry from SDKs, applies processing pipelines, and exports to backends like Jaeger, Prometheus, or Elastic.

Question 5

In log management, what is a 'retention policy' and why is it important for SRE?

Accepted Answer

A configuration that defines how long logs are stored before deletion, balancing cost and compliance

Answer

Retention policies define storage duration for logs, balancing the cost of storage against compliance requirements and incident investigation needs.

(SRE) Site Reliability Engineering Foundation Certification Practice Test

(SRE) Site Reliability Engineering Foundation Certification Practice Test

SRE Observability & Logging 4