The correct answer is to add a requirement rule to the app deployment that runs a PowerShell script to check for the registry key. This is because Intune’s requirement rules are specifically designed to enforce pre-installation conditions, such as verifying a registry key exists, by executing a script that must return a zero exit code for the installation to proceed. On the MD-102 exam, this scenario tests your understanding of how to use detection and requirement rules for line-of-business apps, with a common trap being to confuse requirement rules with detection rules—requirement rules check prerequisites before install, while detection rules verify the app is already present. A helpful memory tip is to think of requirement rules as the “bouncer” at the door, checking for the registry key ID before letting the app in.
MD-102 Manage and maintain devices Practice Question
This MD-102 practice question tests your understanding of manage and maintain devices. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 are planning to deploy a custom line-of-business (LOB) app to 200 Windows 11 devices using Intune. The app requires a specific registry key to be present before installation. What should you do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add a requirement rule to the app deployment that runs a PowerShell script to check for the registry key.
Option C is correct because Intune's requirement rules allow you to run a PowerShell script that checks for the existence of a specific registry key before the app installs. If the script returns a non-zero exit code, Intune will not proceed with the installation, ensuring the prerequisite is met. This is the only option that directly enforces a precondition for the app installation without requiring additional apps or policies.
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.
✗
Add the app as a dependency for another app that creates the registry key.
Why it's wrong here
Dependencies are for other apps, not registry keys.
✗
Use an app configuration policy to set the registry key before the app installs.
Why it's wrong here
App configuration policies are for mobile apps.
✓
Add a requirement rule to the app deployment that runs a PowerShell script to check for the registry key.
Why this is correct
Requirement rules can use PowerShell scripts to check prerequisites.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a custom compliance policy to enforce the registry key.
Why it's wrong here
Compliance policies check device state, not pre-install requirements.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse requirement rules (which block installation if unmet) with detection rules (which determine if an app is already installed), or they mistakenly think app configuration policies can modify the Windows registry, when in fact they are limited to mobile device management (MDM) settings for specific platforms.
Detailed technical explanation
How to think about this question
Requirement rules in Intune for Win32 apps use a detection script that runs in the system context and can check for files, registry keys, or custom conditions. The script must return an exit code of 0 to indicate the requirement is met; any non-zero exit code blocks the installation. This is especially useful for LOB apps that depend on specific system states, such as a registry key set by a Group Policy or a previous configuration, ensuring the app installs only when the environment is correctly prepared.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MD-102 question in full detail.
Manage and maintain devices — This question tests Manage and maintain devices — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Add a requirement rule to the app deployment that runs a PowerShell script to check for the registry key. — Option C is correct because Intune's requirement rules allow you to run a PowerShell script that checks for the existence of a specific registry key before the app installs. If the script returns a non-zero exit code, Intune will not proceed with the installation, ensuring the prerequisite is met. This is the only option that directly enforces a precondition for the app installation without requiring additional apps or policies.
What should I do if I get this MD-102 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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Question Discussion
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