This AZ-204 practice question tests your understanding of develop azure compute 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 developing a web app that processes images uploaded by users. The processing can take up to 30 seconds per image. You need to ensure that the web app remains responsive and can handle spikes in traffic. Which Azure service should you use to offload the image processing?
Azure Cosmos DB
Why wrong: NoSQL database, not a queue service.
Azure Queue Storage
Decouples processing and provides buffering for spikes.
Azure Event Grid
Why wrong: Used for event routing, not queue-based processing.
Azure SignalR Service
Why wrong: Real-time messaging service, not for long-running tasks.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure Queue Storage
Option A is correct because Azure Queue Storage decouples the web frontend from the processing backend, allowing the web app to remain responsive and scale independently. Option B is wrong because Event Grid is for event notifications, not long-running queue-based work. Option C is wrong because Azure Cosmos DB is a database. Option D is wrong because SignalR Service is for real-time messaging.
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.
Azure Cosmos DB
Why it's wrong here
NoSQL database, not a queue service.
Azure Queue Storage
Why this is correct
Decouples processing and provides buffering for spikes.
Related concept
Read the scenario before looking for a memorised answer.
Azure Event Grid
Why it's wrong here
Used for event routing, not queue-based processing.
Azure SignalR Service
Why it's wrong here
Real-time messaging service, not for long-running tasks.
Common exam traps
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.
Detailed technical explanation
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.
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 AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Develop Azure compute solutions — This question tests Develop Azure compute solutions — Read the scenario before looking for a memorised answer..
The correct answer is: Azure Queue Storage — Option A is correct because Azure Queue Storage decouples the web frontend from the processing backend, allowing the web app to remain responsive and scale independently. Option B is wrong because Event Grid is for event notifications, not long-running queue-based work. Option C is wrong because Azure Cosmos DB is a database. Option D is wrong because SignalR Service is for real-time messaging.
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 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.
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