Connect to and consume Azure services and third-party services →mediumMultiple ChoiceObjective-mapped
AZ-204 Practice Question: Connect to and consume Azure services and third-party services
You are designing a solution that uses Azure Event Grid to handle events from multiple Azure services. The events must be filtered and routed to different endpoints based on event type. Which component should you use to filter events before they are sent to subscribers?
⚠ Common exam trap
Many exam-takers confuse the role of a topic (which is just a channel for events) with the filtering capability that is actually implemented at the subscription level, leading them to incorrectly select Event Grid Topic.
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 subscription with filters
C is correct because Event Subscriptions in Azure Event Grid allow you to define filters on event types, subject prefixes/suffixes, and advanced filtering (e.g., based on data fields) to control which events are delivered to each subscriber. This filtering happens before the events are sent to the endpoint, ensuring only matching events are routed.
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 domain
Why it's wrong here
An Event Grid domain serves as a management construct for a collection of custom topics, providing authentication and authorization for publishers and subscribers across multiple applications. While it centralizes event management, the domain itself does not perform event filtering. Filtering logic is applied at the individual event subscription level, allowing subscribers to specify which events from any topic within the domain they wish to receive. This separation ensures granular control over event delivery.
- ✗
Event grid topic
Why it's wrong here
An Event Grid topic acts as the endpoint where publishers send events. It is a fundamental component for event routing, serving as the channel through which events flow from a source to Event Grid. However, a topic's primary role is to receive and distribute events, not to filter them. Filtering capabilities are implemented by event subscriptions, which are configured to listen to a specific topic and apply criteria before forwarding events to handlers.
- ✓
Event subscription with filters
Why this is correct
An Event Grid event subscription is the precise mechanism for selecting and routing specific events to an event handler. Subscribers define criteria using basic filters (e.g., event type, subject begins/ends with) or advanced filters (e.g., properties within the event payload) directly within their subscription configuration. This ensures that only relevant events, matching the specified conditions, are delivered to the designated endpoint, optimizing processing and reducing unnecessary traffic.
- ✗
Event handler
Why it's wrong here
An event handler is the destination or application endpoint that receives and processes events delivered by Event Grid. While it is responsible for the business logic associated with an event, the event handler itself does not perform the initial filtering of events from the topic. Event Grid applies all defined filters at the subscription level before delivering events to the handler, meaning the handler only receives events that have already met the subscription's criteria.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.