DevOps Monitoring & Observability 2

Question 1

What is distributed tracing?

Accepted Answer

Tracking a request's journey across multiple services to diagnose latency and failures

Answer

Distributed tracing instruments requests with trace IDs that flow through all microservices, allowing developers to visualize the full request path and identify bottlenecks.

Question 2

What is the ELK Stack?

Accepted Answer

Elasticsearch, Logstash, and Kibana — a log aggregation, search, and visualization stack

Answer

The ELK Stack combines Elasticsearch (search/storage), Logstash (log ingestion/transformation), and Kibana (visualization) to build a centralized logging platform.

Question 3

What is a 'golden signal' in SRE monitoring?

Accepted Answer

One of four key metrics: latency, traffic, errors, and saturation

Answer

Google SRE defined four golden signals — latency, traffic, errors, and saturation — as the most critical metrics to monitor for any service.

Question 4

What is alerting 'noise' in a monitoring context?

Accepted Answer

Excessive false-positive alerts that distract on-call engineers from real issues

Answer

Alert noise refers to too many low-priority or false-positive alerts that cause alert fatigue, leading engineers to ignore or silence important notifications.

Question 5

What is OpenTelemetry?

Accepted Answer

A vendor-neutral observability framework providing APIs, SDKs, and tools for logs, metrics, and traces

Answer

OpenTelemetry is a CNCF project that standardizes telemetry data collection so applications can be instrumented once and send data to any compatible backend.

DevOps Practice Test

DevOps Practice Test

DevOps Monitoring & Observability 2