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mediummultiple choiceObjective-mapped

You are building a data pipeline that writes billions of small log records (each ~200 bytes) to Azure Blob Storage. The logs are always written in chronological order and are read sequentially in order. You must minimize storage cost and achieve maximum write throughput. Which blob type should you use?

Question 1mediummultiple choice
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You are building a data pipeline that writes billions of small log records (each ~200 bytes) to Azure Blob Storage. The logs are always written in chronological order and are read sequentially in order. You must minimize storage cost and achieve maximum write throughput. Which blob type should you use?

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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

Distractor review

Block blobs in the Cool tier

Block blobs are not optimized for appending; each append would require creating a new block and committing it, which is slower than append blobs for sequential writes.

B

Best answer

Append blobs in the Hot tier

Append blobs are designed for efficient append operations, providing high write throughput for log data. Hot tier is appropriate for frequently written data.

C

Distractor review

Page blobs in the Premium tier

Page blobs are optimized for random read/write access patterns, not for sequential append. Premium tier is expensive and unnecessary for this use case.

D

Distractor review

Block blobs in the Archive tier

Archive tier is for data that is rarely accessed and has significant retrieval latency. It is not suitable for active write workloads.

Common exam trap

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Technical deep dive

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
  • Use explanations to understand the rule behind the answer.

TExam Day Tips

  • Underline the problem statement mentally.
  • 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.

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.

AZ-204 fundamentals practice questions

Practise AZ-204 questions linked to AZ-204 fundamentals.

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Practise AZ-204 questions linked to AZ-204 troubleshooting.

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.

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Question 3

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Question 4

You are developing a web app that authenticates users via Microsoft Entra ID. The app needs to read the user's profile and send emails on their behalf. You want to minimize user consent prompts. Which OAuth 2.0 grant type should you use?

Question 5

You are developing an Azure Function that processes messages from an Azure Service Bus queue. The function uses a Service Bus queue trigger and runs on a Consumption Plan. The queue receives a high volume of messages in bursts. You need to ensure that the function scales out to handle the load but does not exceed 10 concurrent instances. Which configuration should you apply?

Question 6

You are monitoring an Azure App Service using Application Insights. You notice that the server response time is high for certain requests. You need to drill down to see which external dependencies (like databases or APIs) are causing the delay. Which Application Insights feature should you use?

FAQ

Questions learners often ask

What does this AZ-204 question test?

Read the scenario before looking for a memorised answer.

What is the correct answer to this question?

The correct answer is: Append blobs in the Hot tier — Append blobs are optimized for append operations, making them ideal for scenarios like logging where data is written sequentially. They provide high throughput for append-only operations. Block blobs are for random read/write, but appending to block blobs is less efficient. Page blobs are for random read/write of fixed-size pages, not for append-heavy workloads. The choice of storage tier (Hot, Cool, Archive) affects cost but not the append performance. Append blobs give you the best write throughput for sequential append operations.

What should I do if I get this AZ-204 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.

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