Quick Answer
The answer is a VM extension, specifically the Microsoft Antimalware extension, which allows you to install antimalware on multiple VMs without login by automating post-deployment configuration. VM extensions are small applications that run inside the guest OS, enabling silent, scripted installation and management at scale through Azure PowerShell, CLI, ARM templates, or Azure Policy—eliminating the need for any manual RDP or console access. On the AZ-104 exam, this tests your understanding of how to automate VM configuration tasks without interactive access; a common trap is confusing VM extensions with custom script extensions or DSC, but the key is that Microsoft Antimalware is a dedicated extension for this purpose. Remember that extensions are the go-to tool for any “no-login” deployment scenario, and a useful memory tip is “Extensions Extend without Entry”—meaning they add software without requiring a login session.
This AZ-104 practice question tests your understanding of deploy and manage azure compute. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
You deploy several Windows virtual machines and need to install Microsoft Antimalware on each VM without logging on manually. What should you use?
An NSG application security group.
Why wrong: Application security groups help organize NSG rules, not install software.
A VM extension.
This is the standard mechanism for automated VM guest configuration tasks.
A route table.
Why wrong: Route tables control network routing only.
A blob lifecycle rule.
Why wrong: Lifecycle rules manage blob data transitions and deletions.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
A VM extension.
VM extensions are small applications that provide post-deployment configuration and automation tasks on Azure VMs. The Microsoft Antimalware extension can be deployed to multiple VMs at scale via Azure PowerShell, CLI, ARM templates, or policies, enabling silent installation without manual login.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
An NSG application security group.
Why it's wrong here
Application security groups help organize NSG rules, not install software.
A VM extension.
Why this is correct
This is the standard mechanism for automated VM guest configuration tasks.
Related concept
Read the scenario before looking for a memorised answer.
A route table.
Why it's wrong here
Route tables control network routing only.
A blob lifecycle rule.
Why it's wrong here
Lifecycle rules manage blob data transitions and deletions.
Common exam traps
The trap here is that candidates confuse network-level controls (NSGs, route tables) or storage management (lifecycle rules) with VM-level software deployment, overlooking that VM extensions are the dedicated Azure mechanism for post-deployment configuration and software installation.
Detailed technical explanation
The Microsoft Antimalware extension (IaaSAntimalware) integrates with Azure Security Center and can be deployed via the Set-AzVMExtension PowerShell cmdlet or the az vm extension set CLI command. Under the hood, the extension agent on the VM downloads and executes the antimalware installer, applying settings defined in a JSON policy. In real-world scenarios, you can combine this with Azure Policy to automatically deploy the extension to all new VMs in a subscription, ensuring compliance without manual intervention.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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Deploy and Manage Azure Compute — study guide chapter
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FAQ
Deploy and Manage Azure Compute — This question tests Deploy and Manage Azure Compute — Read the scenario before looking for a memorised answer..
The correct answer is: A VM extension. — VM extensions are small applications that provide post-deployment configuration and automation tasks on Azure VMs. The Microsoft Antimalware extension can be deployed to multiple VMs at scale via Azure PowerShell, CLI, ARM templates, or policies, enabling silent installation without manual login.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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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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