- A
Boot diagnostics
Why wrong: Boot diagnostics helps troubleshoot startup problems, but it does not run installation commands or copy files.
- B
VM extension
VM extensions are designed to perform post-deployment configuration tasks on Azure VMs. A custom script extension can install software, run commands, and place files on the machine without requiring the administrator to sign in manually. This makes it a practical choice for first-boot setup, configuration hardening, and lightweight automation tasks.
- C
Managed disk encryption
Why wrong: Managed disk encryption secures data at rest, but it does not execute setup tasks during provisioning.
- D
Availability set
Why wrong: An availability set provides resiliency, but it has nothing to do with post-deployment configuration or scripting.
AZ-104 Deploy and Manage Azure Compute Practice Question
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.
A Windows VM must install an agent and copy a configuration file automatically after provisioning. The administrator wants Azure to run the setup step without logging into the VM manually. Which feature should be used?
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
VM extension
VM extensions are the correct Azure feature to automatically install agents and apply configurations during or after provisioning without manual login. The Custom Script Extension (CSE) specifically can execute a PowerShell or Bash script to install the agent and copy the configuration file, running as a post-deployment task via Azure Resource Manager (ARM) templates, Azure CLI, or PowerShell.
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.
- ✗
Boot diagnostics
Why it's wrong here
Boot diagnostics helps troubleshoot startup problems, but it does not run installation commands or copy files.
- ✓
VM extension
Why this is correct
VM extensions are designed to perform post-deployment configuration tasks on Azure VMs. A custom script extension can install software, run commands, and place files on the machine without requiring the administrator to sign in manually. This makes it a practical choice for first-boot setup, configuration hardening, and lightweight automation tasks.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Managed disk encryption
Why it's wrong here
Managed disk encryption secures data at rest, but it does not execute setup tasks during provisioning.
- ✗
Availability set
Why it's wrong here
An availability set provides resiliency, but it has nothing to do with post-deployment configuration or scripting.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Boot diagnostics (which is for troubleshooting) with a feature that can run scripts, or assume that Managed disk encryption or Availability sets can perform automated setup tasks, when only VM extensions are designed for post-deployment configuration and software installation.
Trap categories for this question
Command / output trap
Boot diagnostics helps troubleshoot startup problems, but it does not run installation commands or copy files.
Detailed technical explanation
How to think about this question
VM extensions are lightweight applications that provide post-deployment configuration and automation tasks. The Custom Script Extension downloads scripts from Azure Storage, GitHub, or a public URL and executes them on the VM using the Windows Guest Agent (WaAgent) or Linux Agent (WALinuxAgent). The agent must be running on the VM for extensions to work; if the agent is missing or disabled, the extension will fail. For Windows, the extension runs as LocalSystem, allowing it to install software and modify system files without interactive logon.
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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Deploy and Manage Azure Compute — study guide chapter
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FAQ
Questions learners often ask
What does this AZ-104 question test?
Deploy and Manage Azure Compute — This question tests Deploy and Manage Azure Compute — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: VM extension — VM extensions are the correct Azure feature to automatically install agents and apply configurations during or after provisioning without manual login. The Custom Script Extension (CSE) specifically can execute a PowerShell or Bash script to install the agent and copy the configuration file, running as a post-deployment task via Azure Resource Manager (ARM) templates, Azure CLI, or PowerShell.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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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