AZ-204 Monitor, troubleshoot, and optimize Azure solutions Practice Test 7 — 15 Questions

Question 1

You need to reduce costs for an Azure Functions app that runs intermittently. The current Consumption plan bills for execution time. Which change would be MOST cost-effective?

Accepted Answer

Migrate to Flex Consumption plan with higher memory. Option B is correct because the Flex Consumption plan allows choosing higher memory which can reduce execution time for CPU-bound tasks, lowering cost. Option A is wrong because Premium plan has a fixed cost. Option C is wrong because Dedicated plan is more expensive for intermittent usage. Option D is wrong because App Service plan is not suitable for Functions.

Answer

Switch to Premium plan with pre-warmed instances

Answer

Use an App Service plan with Always On

Answer

Deploy to Azure Container Instances

Question 2

Your Azure Logic Apps workflow fails intermittently with timeout errors. What should you do to improve reliability?

Accepted Answer

Configure retry policies for failed actions. Option D is correct because configuring retry policies handles transient failures. Option A is wrong because increasing timeout doesn't fix the root cause. Option B is wrong because it's for other services. Option C is wrong because it reduces parallelism, not reliability.

Answer

Increase the action timeout to maximum

Answer

Reduce the number of parallel branches

Answer

Use Azure API Management in front of Logic Apps

Question 3

You need to monitor the performance of an Azure App Service web app. Which metric indicates high CPU usage?

Accepted Answer

CPU Time. Option C is correct because CPU Time measures the amount of CPU consumed by the app. Option A is wrong because it measures memory. Option B is wrong because it measures HTTP requests. Option D is wrong because it measures network traffic.

Answer

Data In/Out

Answer

Requests per second

Answer

Memory working set

Question 4

Which TWO Azure services can be used to monitor and diagnose performance issues in an Azure Kubernetes Service (AKS) cluster?

Accepted Answer

Application Insights for AKS. Options A and C are correct. Container Insights monitors container workload performance, and Azure Monitor for AKS (part of Container Insights) provides diagnostics. Option B is wrong because it's for databases. Option D is wrong because it's a security solution. Option E is wrong because it's for network management.

Answer

Microsoft Defender for Cloud

Answer

Azure Network Watcher

Answer

Azure SQL Analytics

Question 5

Which THREE actions should you take to optimize cost for an Azure Functions app that processes messages from a queue?

Accepted Answer

Use Consumption plan instead of Premium. Options A, C, and E are correct. Using Consumption plan scales costs with usage, batching reduces executions, and using Premium only when needed avoids fixed costs. Option B is wrong because Always On keeps app running. Option D is wrong because increased timeout doesn't reduce cost.

Answer

Enable Always On to keep the app warm

Answer

Increase function timeout to reduce retries

Question 6

Which TWO Azure Monitor features can help troubleshoot a web app that returns slow response times intermittently?

Accepted Answer

Live Metrics. Options A and D are correct. Live Metrics shows real-time performance; Application Map visualizes dependencies and latency. Option B is wrong because it's for cost. Option C is wrong because it's for security. Option E is wrong because it's for policy compliance.

Answer

Sentinel incidents

Answer

Advisor recommendations

Answer

Policy compliance

Question 7

Refer to the exhibit. You deployed an Azure Storage account with this ARM template. Users outside the allowed IP range receive '403 Forbidden' errors. What is the MOST likely cause?

Accepted Answer

The network ACL default action is Deny. Option B is correct because the defaultAction is Deny, so only traffic from the specified IP range is allowed. Option A is wrong because TLS version is correct. Option C is wrong because Cool access tier doesn't affect access. Option D is wrong because the IP rule allows the range.

Answer

The access tier is Cool

Answer

The minimum TLS version is set to TLS1_2

Answer

The IP rule allows only 203.0.113.0/24

Question 8

Refer to the exhibit. You run this KQL query in Azure Monitor Logs. What does the timechart display?

Accepted Answer

Multiple lines, one for each result code, showing request count over time. Option D is correct because the query groups requests by 5-minute bins and result code, so the chart shows separate series for each result code. Option A is wrong because it aggregates over all result codes. Option B is wrong because it includes all result codes separately. Option C is wrong because it's not total requests but per result code.

Answer

A single line of total requests over time

Answer

Total requests per 5 minutes

Answer

Requests grouped by result code only

Question 9

Refer to the exhibit. You run these Azure CLI commands for an Azure Function app. When the app is accessed from https://app.contoso.com, what is the expected behavior?

Accepted Answer

Requests from the allowed origin are accepted. Option B is correct because CORS allows the origin, so requests from that origin will succeed. Option A is wrong because FTPS is not related to CORS. Option C is wrong because CORS allows all methods by default. Option D is wrong because CORS is configured correctly.

Answer

Only GET requests are allowed

Answer

Requests are blocked because FTPS is required

Answer

All requests are blocked because no origins are allowed

Question 10

Your application running on Azure App Service is experiencing intermittent timeouts. You have configured Application Insights to collect telemetry. Which metric should you analyze in the Azure portal to identify the slowest dependencies?

Accepted Answer

Dependency Duration. Option C is correct because the 'Dependency Duration' metric in Application Insights shows the duration of calls to external dependencies. Option A is wrong because 'Request Duration' only measures the total time for requests, not specific dependencies. Option B is wrong because 'Availability' measures uptime, not performance. Option D is wrong because 'Failed Requests' tracks errors, not duration.

Answer

Request Duration

Answer

Failed Requests

Answer

Availability

Question 11

You deploy a microservices application to Azure Kubernetes Service (AKS). The application uses Azure Cache for Redis to store session state. Users report that they are frequently logged out. You suspect that the session data is being evicted from the cache. Which configuration change should you make to reduce evictions?

Accepted Answer

Increase the maxmemory-reserved setting or change eviction policy. Option B is correct because increasing the maxmemory-policy to 'allkeys-lru' or increasing memory allocation reduces evictions. Option A is wrong because enabling persistence (RDB/AOF) does not prevent evictions. Option C is wrong because enabling clustering adds complexity and does not directly reduce evictions. Option D is wrong because using a different tier with more memory is a valid solution, but the question asks for a configuration change within the existing cache instance.

Answer

Enable clustering for the cache

Answer

Enable data persistence using RDB or AOF

Answer

Upgrade to a higher-tier Azure Cache for Redis

Question 12

You need to monitor the CPU and memory usage of an Azure Virtual Machine (VM) over the last 30 days. Which Azure service should you use?

Accepted Answer

Azure Monitor Metrics. Option A is correct because Azure Monitor Metrics collects and stores performance counters like CPU and memory for Azure VMs. Option B is wrong because Azure Log Analytics works with logs, not metrics. Option C is wrong because Azure Service Health monitors Azure service outages, not VM performance. Option D is wrong because Azure Advisor provides recommendations, not historical metrics.

Answer

Azure Service Health

Answer

Azure Advisor

Answer

Azure Log Analytics

Question 13

Your team uses Azure DevOps to deploy a web app to Azure App Service. The deployment fails intermittently with a '500 Internal Server Error' after successful code upload. You want to capture a memory dump of the process when the error occurs. What should you configure?

Accepted Answer

Use App Service Diagnostics to collect a memory dump. Option D is correct because App Service Diagnostics provides the ability to collect memory dumps and procdumps for crash analysis. Options A, B, C are wrong because Application Insights Snapshot Debugger, Azure Monitor autoscale, and Azure API Management do not capture memory dumps on the App Service.

Answer

Configure an autoscale rule in Azure Monitor

Answer

Set up Azure API Management policies

Answer

Enable Application Insights Snapshot Debugger

Question 14

Your Azure Functions app (running on the Consumption plan) processes messages from an Azure Storage queue. Occasionally, the function fails due to a timeout after 5 minutes. You need to increase the maximum execution time without changing the plan. What should you do?

Accepted Answer

Migrate the function app to the Premium or Dedicated plan. Option C is correct because on the Consumption plan, the maximum execution time is 5 minutes by default and cannot be increased; you must upgrade to the Premium or Dedicated plan to have longer timeouts. Option A is wrong because the Consumption plan does not allow increasing functionTimeout beyond 10 minutes (actually 5 minutes for the Consumption plan). Option B is wrong because adjusting the queue message visibility timeout does not affect function execution time. Option D is wrong because Azure Durable Functions can orchestrate longer workflows but the function itself still has a timeout.

Answer

Set the functionTimeout property in host.json to 10 minutes

Answer

Use Durable Functions to split the work

Answer

Increase the visibility timeout of the queue message

Question 15

You are using Azure Application Insights to monitor a web application. You need to create a custom dashboard that shows the number of failed requests per endpoint over the last 24 hours. Which query language should you use?

Accepted Answer

Kusto Query Language (KQL). Option B is correct because Application Insights uses Kusto Query Language (KQL) for querying telemetry. Options A, C, D are wrong because SQL, PowerShell, and Python are not supported in Application Insights for querying.

Answer

Python

Answer

SQL

Answer

PowerShell