Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A container group in Azure Container Instances must pull a private image from Azure Container Registry without embedding registry credentials in the template. What should you configure?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
A managed identity for the container group and the AcrPull role on the registry
A managed identity lets the container group authenticate to ACR without secrets, and AcrPull grants pull permission.
B
Distractor review
An admin user account on the Azure Container Registry
Registry admin credentials are secrets and do not meet the requirement to avoid embedding credentials.
C
Distractor review
A shared access signature in a container environment variable
A SAS token is still a credential and is not the recommended way for ACI to authenticate to ACR.
D
Distractor review
A public network access rule that allows all Azure services
Network access alone does not provide authentication to a private container registry.
Common exam trap
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Technical deep dive
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A route table contains these entries: 10.0.0.0/8 with next hop Virtual appliance, and 10.1.1.0/24 with next hop Virtual network gateway. Which next hop will Azure use for traffic to 10.1.1.5?
Question 2
You are deploying a stateless web application on Azure virtual machines. The solution must automatically add and remove instances based on CPU demand and allow all instances to be managed as one logical group. Which Azure compute feature should you deploy?
Question 3
You are deploying a Windows Server VM for an internal app. The VM must support Secure Boot and vTPM later, its OS disk must survive host moves, and the team wants the lowest-cost managed disk tier that still behaves like a normal writable OS disk. Which two choices should you make? Select two.
Question 4
You need to deploy several identical virtual machines and ensure that the failure of a single Azure host does not affect all of them. Which feature should you use?
Question 5
You need to connect VNet-Hub and VNet-Spoke so that resources in both virtual networks can communicate privately over the Microsoft backbone. Both virtual networks are in the same region. What should you configure?
Question 6
You need to create a storage account that provides the lowest-cost redundant storage for non-critical data and only needs protection against local disk or server failure within a single datacenter. Which redundancy option should you choose?
FAQ
Questions learners often ask
What does this AZ-104 question test?
Authentication checks who the user is.
What is the correct answer to this question?
The correct answer is: A managed identity for the container group and the AcrPull role on the registry — The secure pattern is to assign a managed identity to the container group and grant that identity the AcrPull role on the Azure Container Registry. This lets ACI authenticate without storing passwords, service principal secrets, or tokens in the template. It is the right approach for identity-based image pull access and fits Azure’s secretless design for managed workloads. Why others are wrong: Using registry admin credentials or a SAS still means handling secrets, which the scenario explicitly wants to avoid. A public network access rule only changes connectivity and does not provide authentication or authorization for image pulls. The identity plus AcrPull combination is what enables secure, credential-free access.
What should I do if I get this AZ-104 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
Discussion
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