The answer is to check if the application package has a valid code signing certificate. This is the correct first step because line-of-business (LOB) apps in Intune require a trusted code signing certificate to be installed on the device; without it, the device will reject the installation even though the policy is enforced. On the MD-102 exam, this tests your understanding of the fundamental difference between LOB apps and Win32 apps—specifically that LOB apps rely on the built-in MDM agent, not the Intune Management Extension, and that a missing or expired certificate is the most common cause of a stuck “Enforced” status. A frequent trap is to immediately check the distribution method or the company portal, but the core issue is always certificate trust. Remember the mnemonic: “LOB Loves a Certificate” to recall that LOB app failures almost always trace back to the code signing chain.
MD-102 Prepare infrastructure for devices Practice Question
This MD-102 practice question tests your understanding of prepare infrastructure for devices. 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.
You are troubleshooting a Windows 10 device that fails to install a required application from Microsoft Intune. The device shows the application as 'Enforced' but never installs. The application is a line-of-business (LOB) app. What should you check 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: "never"
Why it matters: Absolute qualifier. True only if the statement has zero exceptions — be cautious of options that seem obvious but break down in edge cases.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Check if the application package has a valid code signing certificate.
Option A is correct because LOB apps require a valid code signing certificate. Option B is incorrect because the Intune Management Extension handles Win32 apps, not LOB apps. Option C is incorrect because LOB apps do not require a specific distribution method. Option D is incorrect because the app may not be in the catalog but can still be uploaded.
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.
✗
Ensure the app is assigned to a device group using 'Required' intent.
Why it's wrong here
Assignment is already correct if it shows 'Enforced'.
✗
Verify that the Intune Management Extension is installed on the device.
Why it's wrong here
LOB apps are installed by the Intune agent, not the extension.
✓
Check if the application package has a valid code signing certificate.
Why this is correct
LOB apps must be signed with a trusted certificate.
Clue confirmation
The clue words "first", "never" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Check if the app is available in the Microsoft Store for Business.
Why it's wrong here
LOB apps are uploaded directly, not from the store.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
Assignment is already correct if it shows 'Enforced'.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
Identify which MD-102 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Prepare infrastructure for devices — This question tests Prepare infrastructure for devices — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Check if the application package has a valid code signing certificate. — Option A is correct because LOB apps require a valid code signing certificate. Option B is incorrect because the Intune Management Extension handles Win32 apps, not LOB apps. Option C is incorrect because LOB apps do not require a specific distribution method. Option D is incorrect because the app may not be in the catalog but can still be uploaded.
What should I do if I get this MD-102 question wrong?
Identify which MD-102 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "first", "never". 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.
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