AI-200 Event Driven Integration Practice Question
You are writing a C# .NET console application that sends batch messages to an Azure Service Bus queue. To maximize performance and avoid exceeding payload size limits, how should you construct and send the batch?
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
✓
Use ServiceBusSender.CreateMessageBatchAsync() to dynamically package messages up to the maximum batch size limit.
Using `ServiceBusSender.CreateMessageBatchAsync()` allows you to safely add messages to a batch until the maximum size limit (e.g., 1 MB for Standard/Premium) is reached, preventing `ArgumentException` or payload size errors.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use individual SendMessageAsync calls inside a parallel Task.WhenAll loop.
Why it's wrong here
While parallel sends work, they generate high network overhead compared to proper batching.
- ✗
Compress the entire list of messages into a single string and send it as an Event Grid webhook payload.
Why it's wrong here
Service Bus queues take ServiceBusMessage objects, not Event Grid webhooks.
- ✓
Use ServiceBusSender.CreateMessageBatchAsync() to dynamically package messages up to the maximum batch size limit.
Why this is correct
CreateMessageBatchAsync creates a batch container that validates the size constraint as you add messages.
- ✗
Add all 10,000 messages into a single List<ServiceBusMessage> and call SendMessagesAsync directly.
Why it's wrong here
Sending an unbounded list will exceed the broker's maximum payload size limit and throw an exception.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Microsoft exam blueprint
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