Cloud Native Observability GCSA Practice Questions (Page 6)

Questions 26–30

1. 26foundation · easy

   What is a common method to correlate logs with traces in a distributed system?

   • AUsing the same log format for all services.
   • BIncluding a trace ID in the log entries.
   • CUsing the same timestamp for all logs and traces.
   • DStoring logs and traces in the same database.
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2. 27expert · hard

   A large e-commerce platform uses a service mesh with mutual TLS and OpenTelemetry for tracing. During a sale event, users report failed checkout attempts. The team sees a spike in 5xx errors in metrics, but the traces show the checkout service receiving requests and returning errors without any downstream calls. The logs show no application exceptions. Which investigation step is most likely to reveal the root cause?

   • AReview the load balancer configuration for sticky sessions.
   • BCheck the checkout service's CPU and memory metrics for resource exhaustion.
   • CInspect the service mesh proxy logs and mTLS certificate expiry status for the checkout service.
   • DIncrease the sampling rate for the checkout service to capture more traces.
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4. 28foundation · easy

   In the context of observability, which telemetry type is best suited for measuring the number of requests per second an API receives?

   • AMetric
   • BTrace
   • CLog
   • DSpan
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5. 29application · medium

   A development team is deploying a new payment service to a Kubernetes cluster. They want to ensure that the service generates telemetry that can be used to detect slow database queries and identify which specific API endpoint is affected. The service is written in Go and uses a PostgreSQL database. Which instrumentation strategy best meets this requirement?

   • AAdd application-level metrics for HTTP request duration and database connection pool usage, and expose them via a Prometheus endpoint.
   • BConfigure the Kubernetes horizontal pod autoscaler to scale the service based on CPU usage and log the scaling events.
   • CInstrument the service with OpenTelemetry libraries to capture traces for each HTTP request and database call, and export them to a tracing backend.
   • DEnable PostgreSQL's built-in slow query log and ship those logs to the central log aggregator.
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6. 30foundation · easy

   How does OpenTelemetry help in a multi-cloud environment?

   • AIt provides a single dashboard for all cloud providers.
   • BIt ensures that telemetry data is formatted consistently, making it portable across different backends.
   • CIt encrypts all telemetry data in transit.
   • DIt automatically migrates workloads between clouds.
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