Observability Stack: Monitoring, Logging & Tracing
Observability Stack: Monitoring, Logging & Tracing
Up to 20 questions, shuffled on every run
Welcome to the Observability Stack Quiz! This quiz will test your knowledge of monitoring, logging, and tracing concepts in modern software systems. Each question is designed to challenge your understanding of how observability works and how it can be applied to build reliable, maintainable applications. Good luck!
Answer key and explanations20 questions
The quiz above draws 20 questions at random from these 32, so a second attempt will not be the same run. Everything in the pool is listed here.
What are the three pillars of observability?
AnswerMetrics, logs, and distributed traces
What are metrics in observability?
AnswerTimestamped numerical measurements of system behavior
What is structured logging?
AnswerLogs using fixed key-value formats like JSON
What is a distributed trace in observability?
AnswerA map of a request as it moves through services
What is Prometheus in the observability stack?
AnswerA time-series database for metric collection
What is Grafana used for?
AnswerVisualizing data via dashboards and graphs
What is the ELK Stack in observability?
AnswerA platform for log search, ingestion, and UI
What is Jaeger used for?
AnswerMonitoring and troubleshooting distributed traces
What is a span in distributed tracing?
AnswerThe record of a single unit of work or operation
What is a trace context, and why is it important?
AnswerMetadata passed between services to link spans
What is sampling in observability?
AnswerRecording a subset of events to reduce overhead
What is an SLO (Service Level Objective)?
AnswerA target value or range for service reliability
What is an SLI (Service Level Indicator)?
AnswerA specific metric used to measure service levels
What is an error budget in observability?
AnswerThe total allowed unreliability before missing an SLO
What is cardinality in metrics?
AnswerThe number of unique sets of label-value pairs
What is APM (Application Performance Monitoring)?
AnswerA suite for monitoring code-level execution and health
What is a RED metric (Rate, Errors, Duration)?
AnswerA framework focusing on request-based service health
What is a USE metric (Utilization, Saturation, Errors)?
AnswerA framework for monitoring hardware resource health
What is alerting fatigue, and how do you prevent it?
AnswerOperational burnout from high volumes of noise
What is a runbook in observability?
AnswerA guide containing procedures for resolving incidents
What is MTTR (Mean Time To Recover)?
AnswerThe average time taken to restore service after failure
What is a correlation ID in observability?
AnswerA unique value used to tag related telemetry data
What is log aggregation?
AnswerCentralizing logs from various sources for analysis
What is flame graph visualization?
AnswerA chart visualizing code execution and CPU usage
What is the relationship between observability and monitoring?
AnswerMonitoring tracks knowns; observability probes unknowns
What is OpenTelemetry (OTel)?
AnswerA vendor-neutral standard for telemetry collection
What is continuous profiling in observability?
AnswerAlways-on analysis of application resource usage
What is observability-driven development (ODD)?
AnswerDesigning systems with instrumentation as a priority
What is data retention policy in observability?
AnswerRules defining the lifespan of stored telemetry data
What is alert routing and escalation policy?
AnswerRules that direct alerts to the correct personnel
What is observability for databases?
AnswerMonitoring internal database health and query execution
What is observability cost optimization?
AnswerManaging telemetry volume to control expenses
