AZ-204 Monitor, troubleshoot, and optimize Azure solutions Practice Test 5 — 15 Questions

Question 1

Arrange the steps to configure auto-scaling for an Azure App Service in the correct order.

Question 2

Arrange the steps to create a CI/CD pipeline using Azure DevOps for an Azure App Service in the correct order.

Question 3

Match each Azure container service to its primary use case.

Question 4

Match each Azure monitoring tool to its purpose.

Question 5

You are developing a web app that experiences intermittent slow responses. You enable Application Insights and notice that the server-side request duration is normally under 200ms, but some requests take over 5 seconds. Which diagnostic tool should you use to identify the root cause?

Accepted Answer

Application Insights Profiler. Option B is correct because Profiler traces the specific line of code that causes slow requests. Option A (Snapshot Debugger) is for exceptions, not performance. Option C (Live Metrics) shows real-time data but doesn't pinpoint code. Option D (Availability Tests) checks endpoint availability, not performance.

Answer

Availability Tests

Answer

Snapshot Debugger

Answer

Live Metrics Stream

Question 6

You have an App Service app that uses Azure SQL Database. Users report that some queries are slow. You need to monitor query performance and receive alerts when the average query duration exceeds 1 second. Which two Azure services should you use?

Accepted Answer

Application Insights. Option B (Application Insights) and Option D (Azure SQL Analytics) are correct because Application Insights can monitor the app's SQL dependency calls and set alerts, while Azure SQL Analytics provides deep query performance insights. Option A (Azure Monitor Logs) is too broad. Option C (Azure Monitor Alerts) can be used but requires a data source. Option E (Azure Advisor) gives recommendations but not real-time monitoring.

Answer

Azure Advisor

Answer

Azure Monitor Alerts

Answer

Azure Monitor Logs

Question 7

You are deploying a microservices application on Azure Kubernetes Service (AKS). You need to monitor the resource consumption of each pod and set up alerts when CPU usage exceeds 80% for 5 minutes. What should you use?

Accepted Answer

Azure Monitor Container Insights. Option A is correct because Container Insights provides monitoring of AKS clusters and supports metric alerts. Option B (Azure Monitor VM Insights) is for VMs. Option C (Application Insights) is for application-level telemetry. Option D (Azure Service Health) monitors Azure service availability.

Answer

Azure Monitor VM Insights

Answer

Application Insights

Answer

Azure Service Health

Question 8

You have an Azure Function app that processes messages from a Service Bus queue. Under high load, some messages are not processed within the expected time. You need to identify whether the function is throttling due to high CPU or due to a downstream dependency. Which Application Insights feature should you use?

Accepted Answer

Application Map. Option C is correct because Application Map shows dependencies and their health, helping identify bottlenecks. Option A (Live Metrics) shows real-time data but not dependencies. Option B (Profiler) is for code-level performance. Option D (Search) is for raw telemetry.

Answer

Live Metrics Stream

Answer

Application Insights Profiler

Answer

Search

Question 9

You are optimizing an Azure API Management instance that handles 10,000 requests per second. You notice that caching is not effective. The cache hit ratio is below 10%. You need to increase the cache hit ratio. What should you do?

Accepted Answer

Configure cache key to include only relevant query parameters. Option D is correct because implementing a cache key strategy that includes only relevant query parameters avoids cache fragmentation. Option A (increasing cache size) doesn't address fragmentation. Option B (using external Redis) adds latency. Option C (removing caching) is counterproductive.

Answer

Use external Azure Cache for Redis

Answer

Disable caching for low-traffic APIs

Answer

Increase the cache size to 5 GB

Question 10

You have an Azure Front Door Premium instance with a Web Application Firewall (WAF) policy. The exhibit shows a custom rule. What is the effect of this rule?

Accepted Answer

Blocks traffic that does NOT originate from 192.168.1.0/24 or 10.0.0.0/8. Option C is correct because the rule blocks requests that do NOT originate from the specified IP ranges (negateCondition: true). Option A is wrong because it allows those IPs. Option B is wrong because it blocks only those IPs. Option D is wrong because it allows all traffic, which is opposite.

Answer

Allows all traffic

Answer

Blocks traffic from 192.168.1.0/24 and 10.0.0.0/8

Answer

Allows traffic from 192.168.1.0/24 and 10.0.0.0/8

Question 11

You have an Azure Logic App that processes orders. Occasionally, the Logic App fails due to a transient error from a downstream API. You want to automatically retry the failed action after 10 seconds, up to 3 times, with exponential backoff. Which configuration should you set on the action?

Accepted Answer

Set retry policy to default with interval of 10 seconds and count of 3. Option B is correct because the default retry policy uses exponential backoff with settings for interval and count. Option A (fixed interval) is not exponential. Option C (none) disables retries. Option D (custom) requires explicit backoff calculation.

Answer

Set retry policy to fixed interval with 10-second delay and 3 retries

Answer

Set retry policy to none and implement custom retry logic

Answer

Set retry policy to custom with exponential interval and 3 retries

Question 12

You have an Azure Cosmos DB container with a high number of physical partitions. You observe that some partitions are hitting the request unit (RU) limit while others are underutilized. What should you do to better distribute the workload?

Accepted Answer

Choose a different partition key that evenly distributes workload. Option A is correct because a good partition key ensures even distribution of RU consumption. Option B (increasing throughput) doesn't fix skew. Option C (changing consistency) affects performance but not distribution. Option D (adding indexes) increases RU consumption.

Answer

Add more composite indexes

Answer

Increase the total provisioned throughput

Answer

Change the default consistency level to eventual

Question 13

You are troubleshooting an Azure App Service that runs a Node.js application. The application returns HTTP 500 errors intermittently. Application Insights is configured. Which telemetry item should you examine first to find the root cause?

Accepted Answer

Exceptions. Option D is correct because exceptions telemetry captures unhandled exceptions and stack traces. Option A (traces) may not include errors. Option B (requests) shows success/failure but not details. Option C (dependencies) shows external calls.

Answer

Traces

Answer

Dependencies

Answer

Requests

Question 14

You query Application Insights with the KQL query in the exhibit. The chart shows a spike in 500 errors at 2:00 PM. What is the next step to diagnose the cause?

Accepted Answer

Query exceptions and traces for the 2:00 PM hour. Option C is correct because drilling into traces and exceptions around that time can pinpoint the specific error. Option A (profiler) is for slow requests. Option B (availability tests) check endpoints. Option D (scaling) is not diagnostic.

Answer

Check availability tests for the same period

Answer

Scale up the App Service plan

Answer

Run a profiler on the 2:00 PM time range

Question 15

You have an Azure Function app that uses Durable Functions. You notice that some orchestrations are taking longer than expected. You need to monitor the history of orchestration instances. What should you use?

Accepted Answer

Durable Functions HTTP management APIs. Option B is correct because the Durable Functions management APIs provide instance history. Option A (Application Insights) can show telemetry but not orchestration history directly. Option C (Azure Monitor) is for infrastructure. Option D (Azure Storage Explorer) shows raw storage data.

Answer

Application Insights

Answer

Azure Monitor Metrics

Answer

Azure Storage Explorer