AZ-204 Develop for Azure storage Practice Question
This AZ-204 practice question tests your understanding of develop for azure storage. 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.
Which TWO authentication methods can be used to authorize access to Azure Blob Storage without requiring shared keys?
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 (formerly Azure AD) authentication
Microsoft Entra ID (formerly Azure AD) authentication and managed identities for Azure resources are both identity-based authentication methods that do not require shared keys. Entra ID authentication uses OAuth 2.0 tokens to authorize access to Blob Storage, while managed identities provide an automatically managed identity in Entra ID for Azure resources, eliminating the need for developers to manage credentials. Both methods support role-based access control (RBAC) for fine-grained permissions.
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.
✗
Shared access signature (SAS) token
Why it's wrong here
SAS tokens are derived from shared keys or user delegation keys.
✓
Microsoft Entra ID (formerly Azure AD) authentication
Why this is correct
Entra ID authentication does not use shared keys.
Related concept
Read the scenario before looking for a memorised answer.
✗
Storage account access keys
Why it's wrong here
Access keys are shared keys.
✗
Client certificate-based authentication
Why it's wrong here
Certificate-based auth is not supported for Blob Storage.
✓
Managed identities for Azure resources
Why this is correct
Managed identities use Entra ID tokens, no shared keys.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Microsoft often tests the misconception that a SAS token is a keyless method, but in reality, a SAS token is generated using a shared key (account key or user delegation key), so it does not meet the 'without requiring shared keys' condition.
Detailed technical explanation
How to think about this question
Under the hood, Entra ID authentication for Blob Storage uses the OAuth 2.0 authorization code flow or client credentials flow to obtain an access token, which is then passed as a Bearer token in the Authorization header. Managed identities leverage the Azure Instance Metadata Service (IMDS) endpoint (169.254.169.254) to acquire tokens without any credential exposure. A real-world scenario is a function app using a system-assigned managed identity to read blobs from a storage account, where the identity is granted the 'Storage Blob Data Reader' RBAC role, eliminating the need for any shared key.
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.
TExam Day Tips
→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 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Develop for Azure storage — This question tests Develop for Azure storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Microsoft Entra ID (formerly Azure AD) authentication — Microsoft Entra ID (formerly Azure AD) authentication and managed identities for Azure resources are both identity-based authentication methods that do not require shared keys. Entra ID authentication uses OAuth 2.0 tokens to authorize access to Blob Storage, while managed identities provide an automatically managed identity in Entra ID for Azure resources, eliminating the need for developers to manage credentials. Both methods support role-based access control (RBAC) for fine-grained permissions.
What should I do if I get this AZ-204 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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