The answer is Microsoft Entra ID, the correct identity service to authenticate users in Azure Kubernetes Service with Microsoft Entra ID because it provides cloud-native identity and access management that integrates directly with AKS for role-based access control and single sign-on. Entra ID acts as the centralized authentication authority, enabling you to secure cluster access by mapping Azure AD groups to Kubernetes roles, which ensures only authorized users can interact with the API server. On the Microsoft Azure Solutions Architect Expert AZ-305 exam, this tests your understanding of identity integration for containerized workloads, often appearing in scenario-based questions where you must choose between Entra ID and alternatives like managed identities or service principals—a common trap is selecting a service principal for user authentication when Entra ID is the proper choice for human identities. Remember the mnemonic: “Entra for humans, managed identities for apps.”
AZ-305 Design infrastructure solutions Practice Question
This AZ-305 practice question tests your understanding of design infrastructure solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 designing a cloud-native application that will run on Azure Kubernetes Service (AKS). The application needs to authenticate users and manage access to resources. Which identity service should you use?
Why wrong: This is for external users (B2B/B2C), not for internal application authentication.
B
Microsoft Entra ID
Microsoft Entra ID (formerly Azure AD) is the identity provider for Azure, offering authentication and authorization for AKS via managed identities or service principals.
C
Microsoft Account
Why wrong: Microsoft Account is for personal use, not enterprise identity management.
D
Azure Active Directory Domain Services
Why wrong: Azure AD DS provides managed domain services like group policy, but is not the primary identity provider; it is used for legacy authentication.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Entra ID
Microsoft Entra ID is the cloud-based identity and access management service for Azure, providing authentication and authorization for AKS workloads.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Microsoft Entra External ID
Why it's wrong here
This is for external users (B2B/B2C), not for internal application authentication.
✓
Microsoft Entra ID
Why this is correct
Microsoft Entra ID (formerly Azure AD) is the identity provider for Azure, offering authentication and authorization for AKS via managed identities or service principals.
Related concept
Authentication checks who the user is.
✗
Microsoft Account
Why it's wrong here
Microsoft Account is for personal use, not enterprise identity management.
✗
Azure Active Directory Domain Services
Why it's wrong here
Azure AD DS provides managed domain services like group policy, but is not the primary identity provider; it is used for legacy authentication.
Common exam traps
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.
Detailed technical explanation
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.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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-305 question in full detail.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related AZ-305 questions on access control and AAA configuration.
Design infrastructure solutions — This question tests Design infrastructure solutions — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Microsoft Entra ID — Microsoft Entra ID is the cloud-based identity and access management service for Azure, providing authentication and authorization for AKS workloads.
What should I do if I get this AZ-305 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related AZ-305 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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