- A
That the Azure VM agent is installed, running, and up to date inside the guest operating system.
Azure VM Backup depends on the VM agent to coordinate snapshot operations and communicate status back to Azure. If the portal reports that the guest agent is not ready, the first troubleshooting step is to verify that the agent exists, is running, and is current. Fixing the agent often resolves immediate backup failures without changing vault settings, policies, or storage configuration.
- B
That the recovery vault uses GZRS storage redundancy.
Why wrong: Vault redundancy affects storage resilience, but it does not fix a guest agent readiness problem on the protected VM.
- C
That the VM has a private endpoint to the Recovery Services vault.
Why wrong: Recovery Services vault backup traffic does not require a private endpoint as the first response to a guest agent failure message.
- D
That a resource lock has not been applied to the VM.
Why wrong: A lock can block certain management actions, but it does not cause the guest agent to report as not ready.
Quick Answer
The answer is that the administrator should first verify the Azure VM agent is installed, running, and up to date inside the guest operating system. This is correct because the Azure Backup extension relies entirely on the guest agent to coordinate snapshot operations; if the agent is not ready, the backup job fails immediately since the extension cannot establish communication with the VM. On the AZ-104 exam, this scenario tests your understanding of the backup dependency chain—many candidates mistakenly jump to network connectivity or permissions, but the agent status is the most common root cause for immediate failures. A helpful memory tip is to think of the guest agent as the “gatekeeper” for backup: if the gatekeeper isn’t home, the backup extension can’t get in to take a snapshot.
AZ-104 Monitor and Maintain Azure Resources Practice Question
This AZ-104 practice question tests your understanding of monitor and maintain azure resources. 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.
Backup protection was enabled on a new Azure VM, but every backup job fails immediately with a message indicating the guest agent is not ready. What should the administrator verify first?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"first"Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Clue:
"immediately / without restart"Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
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
That the Azure VM agent is installed, running, and up to date inside the guest operating system.
The Azure Backup extension requires the Azure VM agent to be installed, running, and up to date inside the guest OS to coordinate backup operations. When the agent is not ready, the backup job fails immediately because the extension cannot communicate with the VM to take snapshots. Verifying the agent's status is the first troubleshooting step before investigating network or configuration issues.
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.
- ✓
That the Azure VM agent is installed, running, and up to date inside the guest operating system.
Why this is correct
Azure VM Backup depends on the VM agent to coordinate snapshot operations and communicate status back to Azure. If the portal reports that the guest agent is not ready, the first troubleshooting step is to verify that the agent exists, is running, and is current. Fixing the agent often resolves immediate backup failures without changing vault settings, policies, or storage configuration.
Clue confirmation
The clue words "first", "immediately / without restart" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
That the recovery vault uses GZRS storage redundancy.
Why it's wrong here
Vault redundancy affects storage resilience, but it does not fix a guest agent readiness problem on the protected VM.
- ✗
That the VM has a private endpoint to the Recovery Services vault.
Why it's wrong here
Recovery Services vault backup traffic does not require a private endpoint as the first response to a guest agent failure message.
- ✗
That a resource lock has not been applied to the VM.
Why it's wrong here
A lock can block certain management actions, but it does not cause the guest agent to report as not ready.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may jump to network or vault configuration issues (like private endpoints or storage redundancy) when the error message explicitly points to the guest agent, which is a common first-check item in Azure Backup troubleshooting.
Detailed technical explanation
How to think about this question
The Azure Backup extension (IaaSBacKup) relies on the Windows Azure Guest Agent (WaAppAgent.exe) or Linux Agent (waagent) to execute pre-snapshot and post-snapshot scripts. The agent must report a 'Ready' status to the Azure fabric controller; if it is stopped, outdated, or unresponsive, the backup extension cannot proceed. In Windows VMs, you can verify the agent status via the Services console or by checking the 'ProvisioningState' in the VM's instance view.
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
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 and Maintain Azure Resources — study guide chapter
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FAQ
Questions learners often ask
What does this AZ-104 question test?
Monitor and Maintain Azure Resources — This question tests Monitor and Maintain Azure Resources — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: That the Azure VM agent is installed, running, and up to date inside the guest operating system. — The Azure Backup extension requires the Azure VM agent to be installed, running, and up to date inside the guest OS to coordinate backup operations. When the agent is not ready, the backup job fails immediately because the extension cannot communicate with the VM to take snapshots. Verifying the agent's status is the first troubleshooting step before investigating network or configuration issues.
What should I do if I get this AZ-104 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "first", "immediately / without restart". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 11, 2026
This AZ-104 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-104 exam.
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