This AZ-204 practice question tests your understanding of connect to and consume azure services and third-party services. 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.
Which TWO services can be used to implement a publish-subscribe messaging pattern in Azure?
Azure Storage Queues
Why wrong: Storage Queues are for point-to-point messaging.
Azure Event Hubs
Why wrong: Event Hubs is for event streaming, not pub-sub.
Azure Service Bus Topics
Service Bus Topics support pub-sub with subscriptions.
Azure Event Grid
Event Grid is a pub-sub event routing service.
Azure Queue Storage
Why wrong: Queue Storage is for point-to-point messaging.
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 Service Bus Topics
Azure Service Bus Topics and Azure Event Grid both support publish-subscribe. Option B is wrong because Storage Queues use point-to-point. Option D is wrong because Event Hubs is for event ingestion, not pub-sub. Option E is wrong because Azure Queue Storage is point-to-point.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure Storage Queues
Why it's wrong here
Storage Queues are for point-to-point messaging.
Azure Event Hubs
Why it's wrong here
Event Hubs is for event streaming, not pub-sub.
Azure Service Bus Topics
Why this is correct
Service Bus Topics support pub-sub with subscriptions.
Related concept
Static NAT maps one inside address to one outside address.
Azure Event Grid
Why this is correct
Event Grid is a pub-sub event routing service.
Related concept
Static NAT maps one inside address to one outside address.
Azure Queue Storage
Why it's wrong here
Queue Storage is for point-to-point messaging.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-204 NAT questions on configuration and troubleshooting.
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FAQ
Connect to and consume Azure services and third-party services — This question tests Connect to and consume Azure services and third-party services — Static NAT maps one inside address to one outside address..
The correct answer is: Azure Service Bus Topics — Azure Service Bus Topics and Azure Event Grid both support publish-subscribe. Option B is wrong because Storage Queues use point-to-point. Option D is wrong because Event Hubs is for event ingestion, not pub-sub. Option E is wrong because Azure Queue Storage is point-to-point.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-204 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
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