SAFe® 5 DevOps Certification SAFe 5 DevOps Monitoring and Telemetry

Question 1

What are the four golden signals of monitoring as applied in SAFe DevOps?

Accepted Answer

Latency, traffic, errors, and saturation

Answer

The four golden signals — latency (response time), traffic (demand), errors (failure rate), and saturation (resource utilization) — provide essential health indicators for any system under monitoring.

Question 2

What is observability and how does it differ from traditional monitoring?

Accepted Answer

Observability is the ability to understand internal system state from external outputs, going beyond predefined metrics to enable exploration of unknown problems

Answer

While monitoring tracks known metrics against thresholds, observability enables understanding of unknown system behaviors through rich telemetry (logs, metrics, traces), allowing engineers to ask new questions about system behavior.

Question 3

What is the purpose of distributed tracing in microservices architectures?

Accepted Answer

To track a request's journey across multiple services to identify bottlenecks and failures

Answer

Distributed tracing follows a single request as it passes through multiple microservices, capturing timing and status at each hop to identify latency bottlenecks, error sources, and dependency issues.

Question 4

What are Service Level Objectives (SLOs) in the context of DevOps?

Accepted Answer

Target values for service reliability metrics that balance availability with development velocity

Answer

SLOs define target levels for reliability metrics (availability, latency, error rate) that balance user expectations with engineering investment, providing an objective basis for reliability decisions and error budgets.

Question 5

What is an error budget in SRE/DevOps practice?

Accepted Answer

The acceptable amount of unreliability, calculated as 1 minus the SLO target, which can be 'spent' on deployments and changes

Answer

An error budget is the tolerable level of unreliability (e.g., if SLO is 99.9%, the error budget is 0.1%). Teams can use this budget for deployments and experiments; when exhausted, they focus on reliability.

SAFe® 5 DevOps Certification Practice Test

SAFe® 5 DevOps Certification Practice Test

SAFe® 5 DevOps Certification SAFe 5 DevOps Monitoring and Telemetry