- A
Log Analytics workspace queries
KQL queries can analyze performance data.
- B
VM Insights
VM Insights provides pre-built performance charts.
- C
Azure Network Watcher
Why wrong: Network Watcher is for network diagnostics, not VM performance.
- D
Azure Backup reports
Why wrong: Backup reports are for backup health, not performance.
- E
Diagnostic settings to send performance counters to Log Analytics
Diagnostic settings enable collection of performance data.
Question 665 of 997
Diagnose Azure VM Performance Issues with Azure Monitor
This AZ-204 practice question tests your understanding of monitor, troubleshoot, and optimize azure solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE features of Azure Monitor can help you diagnose a performance issue in an Azure Virtual Machine?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Log Analytics workspace queries
Log Analytics workspace queries allow you to analyze performance data collected from Azure VMs, such as CPU, memory, and disk metrics. By writing Kusto Query Language (KQL) queries, you can identify trends, anomalies, or bottlenecks that indicate a performance issue. This is a core feature of Azure Monitor for diagnosing VM performance problems.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Log Analytics workspace queries
Why this is correct
KQL queries can analyze performance data.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
VM Insights
Why this is correct
VM Insights provides pre-built performance charts.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Azure Network Watcher
Why it's wrong here
Network Watcher is for network diagnostics, not VM performance.
- ✗
Azure Backup reports
Why it's wrong here
Backup reports are for backup health, not performance.
- ✓
Diagnostic settings to send performance counters to Log Analytics
Why this is correct
Diagnostic settings enable collection of performance data.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse Azure Network Watcher (a network-level tool) with VM-level performance monitoring, or think Azure Backup reports provide performance diagnostics, when in fact only Log Analytics queries, VM Insights, and diagnostic settings for performance counters are directly relevant to diagnosing VM performance issues.
Detailed technical explanation
How to think about this question
Under the hood, Log Analytics workspaces store performance counter data as custom logs, which can be queried using KQL to join with other data sources (e.g., Azure Activity logs, custom logs). VM Insights extends this by providing pre-built workbooks and maps that visualize VM dependencies and performance metrics, using the Azure Monitor Agent (AMA) or Log Analytics agent to collect data at frequent intervals (e.g., every 60 seconds). In a real-world scenario, you might use a KQL query like 'Perf | where CounterName == "% Processor Time" | summarize avg(CounterValue) by bin(TimeGenerated, 5m)' to pinpoint a CPU spike during a specific time window.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Monitor, troubleshoot, and optimize Azure solutions — study guide chapter
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FAQ
Questions learners often ask
What does this AZ-204 question test?
Monitor, troubleshoot, and optimize Azure solutions — This question tests Monitor, troubleshoot, and optimize Azure solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Log Analytics workspace queries — Log Analytics workspace queries allow you to analyze performance data collected from Azure VMs, such as CPU, memory, and disk metrics. By writing Kusto Query Language (KQL) queries, you can identify trends, anomalies, or bottlenecks that indicate a performance issue. This is a core feature of Azure Monitor for diagnosing VM performance problems.
What should I do if I get this AZ-204 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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