- A
Event Grid trigger on Premium plan
Correct. Event Grid provides built-in retry and high throughput, and Premium plan ensures sufficient resources and supports dynamic concurrency.
- B
Blob Storage trigger on Consumption plan
Why wrong: Incorrect. Blob Storage trigger uses a polling mechanism that can delay processing and may miss events under rapid uploads. Consumption plan may also suffer from cold starts.
- C
Event Grid trigger on Consumption plan
Why wrong: Incorrect. While Event Grid is better, the Consumption plan may not guarantee adequate performance at high scale due to resource limits and cold starts.
- D
Blob Storage trigger on Premium plan
Why wrong: Incorrect. Even with a Premium plan, the Blob Storage trigger still relies on polling, which can miss events and isn't as reliable as Event Grid.
Quick Answer
The answer is the Event Grid trigger on a Premium plan. This combination is recommended because Event Grid provides reliable, high-throughput blob processing with automatic retry and dead-lettering, ensuring no upload events are missed even under extreme load, while the Premium plan offers dedicated instances and VNET support to enable true parallel processing and eliminate cold starts. On the AZ-204 exam, this scenario tests your understanding of how to pair event-driven triggers with the right hosting plan to avoid scaling bottlenecks and event loss, with the common trap being the Consumption plan, which can throttle under high volume and lacks the warm instances needed for consistent throughput. Remember the mnemonic “PEG” for Premium plus Event Grid: it’s the only pair that guarantees both high throughput and zero missed events for blob uploads.
AZ-204 Develop Azure compute solutions Practice Question
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 develop an Azure Functions app that processes images triggered by blob uploads. You need to ensure the function can process images in parallel and handle high upload volumes without missing events. Which trigger and plan combination is recommended?
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
Event Grid trigger on Premium plan
The Event Grid trigger on a Premium plan is recommended because Event Grid provides reliable, high-throughput event delivery with built-in retry and dead-lettering, ensuring no blob upload events are missed. The Premium plan offers dedicated instances and VNET connectivity, which avoids cold starts and allows parallel processing of multiple images concurrently, unlike the Consumption plan which has scaling limitations and potential for event loss under high volume.
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.
- ✓
Event Grid trigger on Premium plan
Why this is correct
Correct. Event Grid provides built-in retry and high throughput, and Premium plan ensures sufficient resources and supports dynamic concurrency.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Blob Storage trigger on Consumption plan
Why it's wrong here
Incorrect. Blob Storage trigger uses a polling mechanism that can delay processing and may miss events under rapid uploads. Consumption plan may also suffer from cold starts.
- ✗
Event Grid trigger on Consumption plan
Why it's wrong here
Incorrect. While Event Grid is better, the Consumption plan may not guarantee adequate performance at high scale due to resource limits and cold starts.
- ✗
Blob Storage trigger on Premium plan
Why it's wrong here
Incorrect. Even with a Premium plan, the Blob Storage trigger still relies on polling, which can miss events and isn't as reliable as Event Grid.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume the Blob Storage trigger is the natural choice for blob uploads, overlooking that Event Grid provides superior reliability and performance for high-volume scenarios, and that the Consumption plan's scaling limitations can lead to missed events or throttling.
Detailed technical explanation
How to think about this question
Event Grid triggers use a push-based model via HTTP webhooks, delivering events in near real-time with a 99.99% availability SLA, whereas Blob Storage triggers poll Azure Storage logs every few minutes, introducing latency. The Premium plan supports always-ready instances and dynamic concurrency, allowing the function to scale to hundreds of parallel executions without cold starts, which is critical for processing high volumes of image uploads in applications like real-time photo galleries or automated content moderation pipelines.
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.
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Develop Azure compute solutions — study guide chapter
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Develop Azure compute solutions practice questions
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FAQ
Questions learners often ask
What does this AZ-204 question test?
Develop Azure compute solutions — This question tests Develop Azure compute solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Event Grid trigger on Premium plan — The Event Grid trigger on a Premium plan is recommended because Event Grid provides reliable, high-throughput event delivery with built-in retry and dead-lettering, ensuring no blob upload events are missed. The Premium plan offers dedicated instances and VNET connectivity, which avoids cold starts and allows parallel processing of multiple images concurrently, unlike the Consumption plan which has scaling limitations and potential for event loss under high volume.
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
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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.
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