Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
Exhibit
Template excerpt:
```
resources:
- type: Microsoft.ContainerInstance/containerGroups
name: cg-transform
properties:
containers:
- name: transform
properties:
image: contoso.azurecr.io/transform:3.0
imageRegistryCredentials: []
```
Requirement: the image is stored in Azure Container Registry and no username, password, or connection string may be embedded in the deploymentBased on the exhibit, what should the administrator configure so the container group can pull the private image without storing registry credentials?
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
Assign a managed identity to the container group and grant it AcrPull on the registry.
Managed identity-based access is the correct secret-free method for Azure Container Instances to authenticate to Azure Container Registry. By assigning an identity to the container group and granting that identity the AcrPull role on the registry, the group can pull the private image without storing credentials in the template. This satisfies both security and operational requirements.
B
Distractor review
Store the ACR admin account password in a container environment variable.
Embedding a password in configuration violates the requirement to avoid stored credentials.
C
Distractor review
Use a SAS token for the container image reference.
SAS tokens are not the normal authentication method for pulling private container images from ACR.
D
Distractor review
Place the registry in the same resource group as the container group.
Resource group placement does not authorize access to a private 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: Assign a managed identity to the container group and grant it AcrPull on the registry. — The container group should use a managed identity and receive the AcrPull role on the Azure Container Registry. That is the Azure-native way to let ACI pull private images without hardcoding usernames, passwords, or tokens into the deployment. The exhibit specifically says the image is private and credentials must not be embedded, so identity-based authorization is the correct design. This also simplifies rotation and reduces secret management overhead. Why others are wrong: Environment variables and passwords still create a secret management problem. SAS tokens are not the standard registry-authentication mechanism for ACR image pulls. Resource group placement has no effect on authorization to a private registry.
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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