- A
var sasBuilder = new BlobSasBuilder { BlobContainerName = container.Name, Permissions = "rl", ExpiresOn = DateTimeOffset.UtcNow.AddHours(1) }; var sasUri = container.GenerateSasUri(sasBuilder);
This correctly creates a BlobSasBuilder with permissions 'rl' (read and list) and an expiry of 1 hour. The GenerateSasUri method returns the URI with the SAS token.
- B
var sasBuilder = new BlobSasBuilder { Permissions = "r", ExpiresOn = DateTimeOffset.UtcNow.AddHours(1) }; var sasUri = container.GenerateSasUri(sasBuilder);
Why wrong: This only sets 'r' (read) permission but does not include 'l' (list). Additionally, it does not set the BlobContainerName property, which is required for a container-level SAS.
- C
var sasToken = container.GetSasToken(permissions: "rl", duration: TimeSpan.FromHours(1));
Why wrong: There is no GetSasToken method on BlobContainerClient. The correct way is to use GenerateSasUri with a BlobSasBuilder.
- D
var sasBuilder = new BlobSasBuilder { Permissions = "rl", StartsOn = DateTimeOffset.UtcNow, ExpiresOn = DateTimeOffset.UtcNow.AddHours(1) }; var sasUri = container.GenerateSasUri(sasBuilder);
Why wrong: While this sets permissions correctly and includes StartsOn (optional), it fails to set the BlobContainerName property, which is required for the SAS to be scoped to the container.
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.
You are developing a C# application that stores sensitive documents in Azure Blob Storage. The application needs to generate a time-limited shared access signature (SAS) that allows a client to only read and list blobs in a specific container. The SAS must be valid for exactly 1 hour from the current time. Which code snippet correctly creates the SAS? (Assume the BlobServiceClient and BlobContainerClient are properly initialized.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
var sasBuilder = new BlobSasBuilder { BlobContainerName = container.Name, Permissions = "rl", ExpiresOn = DateTimeOffset.UtcNow.AddHours(1) }; var sasUri = container.GenerateSasUri(sasBuilder);
Option A is correct because it creates a `BlobSasBuilder` with the container name, permissions set to "rl" (read and list), and an expiration time of exactly 1 hour from the current UTC time. The `GenerateSasUri` method then produces a SAS URI that grants the specified permissions for the container. This matches the requirement for a time-limited SAS that allows only read and list operations on blobs in the container.
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.
- ✓
var sasBuilder = new BlobSasBuilder { BlobContainerName = container.Name, Permissions = "rl", ExpiresOn = DateTimeOffset.UtcNow.AddHours(1) }; var sasUri = container.GenerateSasUri(sasBuilder);
Why this is correct
This correctly creates a BlobSasBuilder with permissions 'rl' (read and list) and an expiry of 1 hour. The GenerateSasUri method returns the URI with the SAS token.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
var sasBuilder = new BlobSasBuilder { Permissions = "r", ExpiresOn = DateTimeOffset.UtcNow.AddHours(1) }; var sasUri = container.GenerateSasUri(sasBuilder);
Why it's wrong here
This only sets 'r' (read) permission but does not include 'l' (list). Additionally, it does not set the BlobContainerName property, which is required for a container-level SAS.
- ✗
var sasToken = container.GetSasToken(permissions: "rl", duration: TimeSpan.FromHours(1));
Why it's wrong here
There is no GetSasToken method on BlobContainerClient. The correct way is to use GenerateSasUri with a BlobSasBuilder.
- ✗
var sasBuilder = new BlobSasBuilder { Permissions = "rl", StartsOn = DateTimeOffset.UtcNow, ExpiresOn = DateTimeOffset.UtcNow.AddHours(1) }; var sasUri = container.GenerateSasUri(sasBuilder);
Why it's wrong here
While this sets permissions correctly and includes StartsOn (optional), it fails to set the BlobContainerName property, which is required for the SAS to be scoped to the container.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think they must set `StartsOn` to the current time to make the SAS valid immediately, but Azure Storage automatically treats the SAS as valid from the time of generation if `StartsOn` is omitted, and including it can cause failures due to clock skew.
Detailed technical explanation
How to think about this question
Under the hood, the `BlobSasBuilder` constructs a SAS token using the Azure Storage REST API's `signedpermissions` (sp), `signedexpiry` (se), and other fields. The permissions string "rl" maps to the `r` (read) and `l` (list) permissions in the SAS token. When `StartsOn` is omitted, the SAS is valid from the time of creation, which is the recommended practice to avoid issues with clock drift between the client and the storage service. The `GenerateSasUri` method appends the SAS token as a query parameter to the container URI, enabling secure delegated access.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Develop for Azure storage — study guide chapter
Learn the concepts, then practise the questions
- →
Develop for Azure storage practice questions
Targeted practice on this topic area only
- →
All AZ-204 questions
997 questions across all exam domains
- →
Microsoft Azure Developer Associate AZ-204 study guide
Full concept coverage aligned to exam objectives
- →
AZ-204 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related AZ-204 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Develop Azure compute solutions practice questions
Practise AZ-204 questions linked to Develop Azure compute solutions.
Develop for Azure storage practice questions
Practise AZ-204 questions linked to Develop for Azure storage.
Implement Azure security practice questions
Practise AZ-204 questions linked to Implement Azure security.
Connect to and consume Azure services and third-party services practice questions
Practise AZ-204 questions linked to Connect to and consume Azure services and third-party services.
Monitor, troubleshoot, and optimize Azure solutions practice questions
Practise AZ-204 questions linked to Monitor, troubleshoot, and optimize Azure solutions.
AZ-204 fundamentals practice questions
Practise AZ-204 questions linked to AZ-204 fundamentals.
AZ-204 scenario practice questions
Practise AZ-204 questions linked to AZ-204 scenario.
AZ-204 troubleshooting practice questions
Practise AZ-204 questions linked to AZ-204 troubleshooting.
Practice this exam
Start a free AZ-204 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this AZ-204 question test?
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: var sasBuilder = new BlobSasBuilder { BlobContainerName = container.Name, Permissions = "rl", ExpiresOn = DateTimeOffset.UtcNow.AddHours(1) }; var sasUri = container.GenerateSasUri(sasBuilder); — Option A is correct because it creates a `BlobSasBuilder` with the container name, permissions set to "rl" (read and list), and an expiration time of exactly 1 hour from the current UTC time. The `GenerateSasUri` method then produces a SAS URI that grants the specified permissions for the container. This matches the requirement for a time-limited SAS that allows only read and list operations on blobs in the container.
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.
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 11, 2026
This AZ-204 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-204 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.