The correct answer is to enable managed identity for the container group and assign the AcrPull role. This works because a system-assigned or user-assigned managed identity provides ACI with a secure, credential-free authentication method to Azure Active Directory, allowing it to pull images from a private ACR without ever storing passwords or keys in the container group definition. On the AZ-204 exam, this scenario tests your understanding of Azure identity-based access control versus legacy credential storage—a common trap is choosing the admin account option, which requires embedding a username and password, or a service principal, which still needs secret storage. Remember the key distinction: managed identity eliminates credential management entirely, while alternatives like SAS tokens or admin accounts introduce security risks or configuration overhead. A simple memory tip: “Managed identity means no stored secret—just assign the role and connect.”
AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. 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 are deploying a containerized application to Azure Container Instances. The container image is stored in a private Azure Container Registry (ACR). You need to ensure that ACI can pull the image without storing credentials in the container group definition. What should you use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable managed identity for the container group and assign the AcrPull role.
Option D is correct because managed identity (system-assigned or user-assigned) allows ACI to authenticate to ACR without storing credentials, by granting the identity 'AcrPull' role. Option A is wrong because admin account requires username/password in the configuration. Option B is wrong because SAS tokens are not supported for ACR authentication in ACI. Option C is wrong because service principal requires storing credentials in the container group.
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.
✓
Enable managed identity for the container group and assign the AcrPull role.
Why this is correct
Managed identity avoids storing credentials.
Related concept
Read the scenario before looking for a memorised answer.
✗
Generate a SAS token for the ACR and use it in the image registry credential.
Why it's wrong here
SAS tokens are not supported for ACR in ACI.
✗
Create a service principal with AcrPull role and pass its credentials.
Why it's wrong here
Service principal credentials would still be stored in the container group.
✗
Use the ACR admin account and provide the credentials in the container group.
Why it's wrong here
Admin account exposes credentials in the configuration.
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.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Identify which AZ-204 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.
Develop Azure compute solutions — This question tests Develop Azure compute solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable managed identity for the container group and assign the AcrPull role. — Option D is correct because managed identity (system-assigned or user-assigned) allows ACI to authenticate to ACR without storing credentials, by granting the identity 'AcrPull' role. Option A is wrong because admin account requires username/password in the configuration. Option B is wrong because SAS tokens are not supported for ACR authentication in ACI. Option C is wrong because service principal requires storing credentials in the container group.
What should I do if I get this AZ-204 question wrong?
Identify which AZ-204 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.
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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