AZ-204 Monitor, troubleshoot, and optimize Azure solutions Practice Test 6 — 15 Questions

Question 1

You are using Azure Monitor to collect logs from multiple Azure resources. You need to query logs to find all error events from the last 24 hours. Which query language should you use?

Accepted Answer

Kusto Query Language (KQL). Option A is correct because Kusto Query Language (KQL) is the query language for Azure Monitor Logs. Option B (SQL) is for relational databases. Option C (PowerShell) is for scripting. Option D (PromQL) is for Prometheus.

Answer

Transact-SQL (T-SQL)

Answer

PromQL

Answer

PowerShell

Question 2

You have an Azure Policy as shown in the exhibit. The roleDefinitionId corresponds to the 'Contributor' role. What does this policy do?

Accepted Answer

Denies Contributors from creating or modifying virtual machines. Option B is correct because the policy denies actions from Contributors on VMs. Option A (allows) is wrong because effect is deny. Option C (audits) is wrong because effect is deny. Option D (deploys) is wrong because effect is deny.

Answer

Allows Contributors to create virtual machines

Answer

Audits when Contributors create virtual machines

Answer

Deploys a virtual machine when a Contributor action occurs

Question 3

You have an Azure CDN profile that caches content from a storage account. Users in Europe report that images load slowly. You need to improve performance for European users. What should you do?

Accepted Answer

Add an additional CDN endpoint with a European origin. Option C is correct because adding a CDN endpoint with a European origin or closest POP reduces latency. Option A (prefetching) is not a CDN feature. Option B (compression) may help but not primarily for geographic latency. Option D (caching rules) may improve hit ratio but not geographical distance.

Answer

Enable compression on the CDN

Answer

Enable prefetching on the CDN

Answer

Configure caching rules to cache longer

Question 4

You are monitoring an Azure App Service using Application Insights. You want to alert when the average server response time exceeds 2 seconds over a 5-minute window. What should you create?

Accepted Answer

A metric alert with 'Server response time' as the signal. Option A is correct because a metric alert on the 'Server response time' metric can trigger when the threshold is exceeded. Option B (log alert) requires log queries. Option C (activity log alert) is for resource events. Option D (availability alert) is for endpoint availability.

Answer

An availability alert

Answer

A log alert with a custom KQL query

Answer

An activity log alert

Question 5

Which TWO actions should you take to optimize costs for an Azure SQL Database that is underutilized? (Choose two.)

Accepted Answer

Purchase reserved capacity. Option B (scale down) and Option D (use reserved capacity) are correct because scaling down reduces compute costs and reserved capacity offers discounts. Option A (increase DTU) increases cost. Option C (geo-replication) adds cost. Option E (read scale-out) adds cost.

Answer

Enable geo-replication

Answer

Increase the DTU or vCore limit

Answer

Enable read scale-out

Question 6

Which THREE metrics should you monitor to determine if an Azure Kubernetes Service (AKS) cluster is running optimally? (Choose three.)

Accepted Answer

Node CPU usage percentage. Option A (Node CPU), Option B (Pod memory), and Option D (Disk I/O) are correct because they directly affect pod performance and cluster health. Option C (API server latency) is important but not a direct indicator of cluster workload optimization. Option E (Network bytes) is less critical for optimization.

Answer

API server request latency

Answer

Network bytes sent and received

Question 7

Which TWO actions can help you reduce latency for a globally distributed web application? (Choose two.)

Accepted Answer

Use Azure Traffic Manager with performance routing. Option A (Azure Front Door) and Option D (Azure Traffic Manager) are correct because they route traffic to the nearest endpoint. Option B (App Service scaling) helps with load but not geographic latency. Option C (Cosmos DB multi-region writes) reduces database latency but not overall application latency. Option E (Application Gateway) is regional.

Answer

Use Azure Application Gateway with Web Application Firewall

Answer

Scale up the App Service plan to a higher tier

Answer

Enable multi-region writes on Azure Cosmos DB

Question 8

Which THREE tools can you use to diagnose performance issues in an Azure App Service? (Choose three.)

Accepted Answer

Application Insights. Option A (Application Insights), Option B (Kudu console), and Option D (App Service diagnostics) are correct. Option C (Azure SQL Analytics) is for SQL, not App Service. Option E (Azure Monitor for VMs) is for virtual machines.

Answer

Azure Monitor for VMs

Answer

Azure SQL Analytics

Question 9

Which TWO approaches can help you optimize the cost of Azure Storage accounts that store infrequently accessed data? (Choose two.)

Accepted Answer

Use Cool or Archive storage tier. Option B (Cool storage tier) and Option D (lifecycle management) are correct. Option A (premium tier) is for high-performance, more expensive. Option C (RA-GRS) adds cost. Option E (encryption) doesn't affect cost.

Answer

Use Premium storage tier

Answer

Enable geo-redundant storage (RA-GRS)

Answer

Enable Azure Storage encryption

Question 10

Your team monitors Azure Functions with Application Insights. After a recent deployment, cold start latency increased. Which feature should you enable to mitigate this?

Accepted Answer

Migrate from Consumption plan to Premium plan. Option C is correct because Premium plan keeps instances warm, reducing cold starts. Option A is wrong because Always On is for App Service, not Functions. Option B is wrong because it's a general setting, not specifically for cold starts. Option D is wrong because it's a debugging tool, not a mitigation for cold starts.

Answer

Set FUNCTIONS_WORKER_RUNTIME to 'dotnet-isolated'

Answer

Enable Azure Monitor alerts on function execution count

Answer

Enable Always On in the function app configuration

Question 11

You deploy a microservices architecture on Azure Kubernetes Service (AKS). Some pods report OOMKilled errors. Which diagnostic step should you take first?

Accepted Answer

Review container resource requests and limits in the pod YAML. Option D is correct because reviewing container resource limits in the pod spec directly addresses memory constraints. Option A is wrong because nodes may have enough memory. Option B is wrong because cluster autoscaler adds nodes, not memory to existing pods. Option C is wrong because HPA scales replicas, not memory limits.

Answer

Enable cluster autoscaler to add more nodes

Answer

Check node memory utilization with kubectl top nodes

Answer

Configure horizontal pod autoscaler based on memory

Question 12

You need to diagnose why an Azure App Service web app returns HTTP 503 errors during peak traffic. Which Application Insights feature should you use?

Accepted Answer

Live Metrics. Option B is correct because Live Metrics shows real-time performance and can pinpoint issues. Option A is wrong because it's for code-level exceptions. Option C is wrong because it's for deployment-related issues. Option D is wrong because it's for log search, not real-time monitoring.

Answer

Availability tests

Answer

Log Analytics query for failed requests

Answer

Application Map

Question 13

You are optimizing an Azure SQL Database that runs a heavy reporting workload. Queries are slow due to high logical reads. Which index strategy should you recommend?

Accepted Answer

Create nonclustered indexes with included columns. Option D is correct because covering indexes include all columns needed by queries, reducing reads. Option A is wrong because it's for key lookups, not covering. Option B is wrong because clustered index doesn't cover all columns. Option C is wrong because columnstore indexes are for large scans, not OLTP.

Answer

Use columnstore indexes on fact tables

Answer

Disable auto-update statistics

Answer

Rebuild clustered indexes with higher fill factor

Question 14

Your Azure Kubernetes Service (AKS) cluster experiences node failures. Which Azure service provides automated node repair?

Accepted Answer

AKS node auto-repair. Option B is correct because AKS node auto-repair is a built-in feature. Option A is wrong because Azure Monitor only provides observability. Option C is wrong because it's a security solution. Option D is wrong because it's a SIEM/SOAR solution.

Answer

Azure Sentinel

Answer

Microsoft Defender for Cloud

Answer

Azure Monitor

Question 15

You deploy a web app to Azure App Service. Users report intermittent 500 errors. How should you enable detailed error logging?

Accepted Answer

Enable Application Insights for the web app. Option A is correct because Application Insights provides detailed error tracking. Option B is wrong because it's for storage. Option C is wrong because it's a CDN. Option D is wrong because it's for DNS.

Answer

Configure Azure Storage account diagnostics

Answer

Set up Azure DNS logging

Answer

Enable Azure Front Door logging