Week_4

You’re implementing observability in a cloud-based e-commerce app. Which of the following ensures end-to-end traceability across services?

• Custom logs in Azure Monitor
• Azure Application Insights with Distributed Tracing
• Azure Advisor cost recommendations
• Network Security Group (NSG) logs

Answer explanation

Application Insights with Distributed Tracing helps trace requests across microservices for full visibility.

What is a common pitfall when setting up observability in microservices-based cloud apps?

• Using structured logs
• Not correlating telemetry data
• Implementing distributed tracing
• Using Application Insights

Answer explanation

Without correlating logs, metrics, and traces, it’s difficult to diagnose issues across services.

Which Azure service allows sending alerts to Teams and email when CPU usage exceeds 80%?

• Azure Advisor
• Azure Resource Health
• Azure Monitor Action Groups
• Azure Blueprints

Answer explanation

Action Groups in Azure Monitor send notifications via Teams, email, and other channels.

During cost optimization, Azure Advisor recommends resizing an underutilized VM. What’s the primary benefit of following this?

• Enhanced observability
• Improved performance
• Cost savings
• Increased network throughput

Answer explanation

Azure Advisor helps reduce costs by identifying underused resources like oversized VMs.

You're writing a KQL query to count failed login attempts. What clause ensures only results with 'Failure' status are shown?

• summarize
• extend
• where
• join

Answer explanation

The where clause filters data, allowing selection of logs with specific criteria like ResultType == "Failure".

A team sets up alerts but forgets to configure an action group. What will happen?

• Alerts will automatically send emails
• Alerts will be visible in Azure Monitor but no notifications will be sent
• Alerts will fail to trigger
• All resource groups will be deleted

Answer explanation

Without action groups, alerts will appear in the portal but no external actions (email, Teams, etc.) occur.

What is a benefit of using centralized logging strategies in cloud environments?

• Reduced log retention costs
• Improved trace performance
• Simplified root cause analysis
• Decreased network latency

Answer explanation

Centralized logging simplifies correlating events from multiple systems for root cause analysis.

Which metric is best for detecting pod resource exhaustion in AKS?

• Node disk IO
• Pod CPU and memory usage
• Cluster health score
• Kubernetes event count

Answer explanation

Pod-level CPU and memory metrics are essential to detect potential resource exhaustion in AKS.

Which Azure service helps monitor dependencies between Azure Functions?

• Azure Monitor Logs
• Application Insights
• Azure DevTest Labs
• Azure Resource Graph

Answer explanation

Application Insights provides end-to-end transaction visibility including Azure Functions.

You want to reduce Azure Monitor data ingestion costs. What approach helps the most?

• Increase query frequency
• Enable sampling for telemetry
• Log more verbose data
• Reduce retention from 90 to 180 days

Answer explanation

Sampling reduces the volume of telemetry data collected, thereby reducing ingestion costs.