This AZ-500 practice question tests your understanding of secure identity and access. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which TWO of the following are authentication methods supported by Microsoft Entra ID?
Certificate-based authentication (CBA)
Supported for federated domains.
Security questions
Why wrong: Not used for authentication, only self-service password reset.
Smart card with PIN
Why wrong: Not natively supported without federation.
OAuth 2.0 authorization code flow
Why wrong: OAuth 2.0 is a protocol, not an authentication method.
SMS-based one-time passcode
Supported via text message.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Certificate-based authentication (CBA)
Certificate-based authentication (CBA) is a supported authentication method in Microsoft Entra ID that allows users to authenticate using X.509 certificates issued by a trusted Certificate Authority (CA). This method is commonly used for passwordless authentication, especially in hybrid environments where smart cards or device certificates are deployed. Entra ID validates the certificate chain and maps the certificate to a user object, enabling secure sign-in without a password.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Certificate-based authentication (CBA)
Why this is correct
Supported for federated domains.
Related concept
Read the scenario before looking for a memorised answer.
Security questions
Why it's wrong here
Not used for authentication, only self-service password reset.
Smart card with PIN
Why it's wrong here
Not natively supported without federation.
OAuth 2.0 authorization code flow
Why it's wrong here
OAuth 2.0 is a protocol, not an authentication method.
SMS-based one-time passcode
Why this is correct
Supported via text message.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often confuse authentication methods with authorization protocols (like OAuth 2.0) or confuse legacy on-premises methods (like security questions) with cloud-supported methods in Entra ID, leading them to select options that are not actual authentication methods in the Microsoft Entra ID context.
Detailed technical explanation
Entra ID supports multiple authentication methods including passwords, phone call, SMS OTP, Microsoft Authenticator app (push and OTP), FIDO2 security keys, Windows Hello for Business, and certificate-based authentication. SMS-based one-time passcode (option E) is explicitly listed in the Entra ID authentication methods policy and is often used for phone sign-in or as a secondary factor. Certificate-based authentication works by uploading the trusted CA certificates to Entra ID, then during sign-in, the user presents a certificate from their device; Entra ID validates the certificate chain, checks revocation status via CRL or OCSP, and maps the certificate's subject or SAN to a user object.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Secure identity and access — study guide chapter
Learn the concepts, then practise the questions
Secure identity and access practice questions
Targeted practice on this topic area only
All AZ-500 questions
1,000 questions across all exam domains
Microsoft Azure Security Engineer Associate AZ-500 study guide
Full concept coverage aligned to exam objectives
AZ-500 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise AZ-500 questions linked to Secure identity and access.
Practise AZ-500 questions linked to Secure compute, storage, and databases.
Practise AZ-500 questions linked to Secure Azure using Microsoft Defender for Cloud and Microsoft Sentinel.
Practise AZ-500 questions linked to Manage identity and access.
Practise AZ-500 questions linked to Secure networking.
Practise AZ-500 questions linked to AZ-500 fundamentals.
Practise AZ-500 questions linked to AZ-500 scenario.
Practise AZ-500 questions linked to AZ-500 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Secure identity and access — This question tests Secure identity and access — Read the scenario before looking for a memorised answer..
The correct answer is: Certificate-based authentication (CBA) — Certificate-based authentication (CBA) is a supported authentication method in Microsoft Entra ID that allows users to authenticate using X.509 certificates issued by a trusted Certificate Authority (CA). This method is commonly used for passwordless authentication, especially in hybrid environments where smart cards or device certificates are deployed. Entra ID validates the certificate chain and maps the certificate to a user object, enabling secure sign-in without a password.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 25, 2026
This AZ-500 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-500 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.