AZ-200 Azure Messaging & Events

Question 1

What is the key difference between Azure Service Bus queues and Azure Storage queues?

Accepted Answer

Service Bus supports advanced features like sessions, dead-lettering, and duplicate detection; Storage queues are simpler and cheaper

Answer

Storage queues support ordering guarantees; Service Bus does not

Answer

Service Bus is free; Storage queues have per-message costs

Answer

Storage queues support larger messages

Question 2

Which Azure Service Bus feature ensures that messages related to the same entity (e.g., same order ID) are processed in order by a single consumer?

Accepted Answer

Message sessions

Answer

Duplicate detection

Answer

Message deferral

Answer

Topic subscriptions

Question 3

What happens to a Service Bus message that fails processing repeatedly and exceeds the max delivery count?

Accepted Answer

The message is moved to the dead-letter queue (DLQ)

Answer

The message is permanently deleted

Answer

The message is returned to the beginning of the queue

Answer

Processing retries indefinitely

Question 4

What is the primary use case for Azure Event Grid?

Accepted Answer

Reactive, event-driven routing of discrete events to multiple subscribers

Answer

High-throughput event streaming for analytics

Answer

Message ordering for financial transactions

Answer

Large message batch processing

Question 5

What is the maximum message size supported by Azure Service Bus in the Premium tier?

Accepted Answer

100 MB

Answer

256 KB

Answer

1 MB

Answer

4 MB

Question 6

What is the difference between Azure Event Grid topics and Azure Service Bus topics?

Accepted Answer

Event Grid topics route events using filters to push-based subscribers; Service Bus topics use pull-based subscriptions with message locks and acknowledgments

Answer

Event Grid topics are for high-throughput streaming; Service Bus topics are for low-latency messaging

Answer

They are functionally identical

Answer

Event Grid topics persist messages for 30 days; Service Bus topics do not persist