This AZ-104 practice question tests your understanding of implement and manage virtual networking. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. A key principle to apply: azure Event Grid. 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.
A network administrator wants a subscription-based mechanism to receive real-time operational updates from Azure virtual network resources as configurations change, instead of polling periodically. Which Azure service should be used?
Correct: Azure Event Grid follows a publish-subscribe model, allowing network administrators to subscribe to events from Azure resources and receive real-time updates when configurations change.
B
Azure Backup
Why wrong: Incorrect: Azure Backup is designed for data protection and recovery, not for streaming operational updates. It operates on a schedule or on-demand basis, not as a subscription for real-time changes.
C
Azure Network Watcher
Why wrong: Incorrect: Azure Network Watcher provides tools for monitoring, diagnosing, and analyzing network traffic, but it does not offer a subscription-based push mechanism for configuration changes. It typically requires active polling or manual triggers.
D
Azure Virtual Network peering
Why wrong: Incorrect: Azure Virtual Network peering is used to connect virtual networks, enabling traffic between them. It does not provide subscription-based streaming of operational updates.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Event Grid
Azure Event Grid provides an event-driven, publish-subscribe model that delivers real-time notifications when Azure resources change state. It uses event subscriptions to push updates to subscribers as changes occur, eliminating the need for polling. This aligns with the requirement for a subscription-based mechanism to stream operational updates.
Key principle: Azure Event Grid
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Azure Event Grid
Why this is correct
Correct: Azure Event Grid follows a publish-subscribe model, allowing network administrators to subscribe to events from Azure resources and receive real-time updates when configurations change.
Related concept
Azure Event Grid
✗
Azure Backup
Why it's wrong here
Incorrect: Azure Backup is designed for data protection and recovery, not for streaming operational updates. It operates on a schedule or on-demand basis, not as a subscription for real-time changes.
When this WOULD be correct
A question asking for the best method to back up router configurations to a central server using a simple, lightweight protocol without authentication or directory browsing would make TFTP the correct answer.
✗
Azure Network Watcher
Why it's wrong here
Incorrect: Azure Network Watcher provides tools for monitoring, diagnosing, and analyzing network traffic, but it does not offer a subscription-based push mechanism for configuration changes. It typically requires active polling or manual triggers.
When this WOULD be correct
In a question asking for a method to automatically learn and secure MAC addresses on a switch port without manual configuration, such as 'Which feature allows a switch to dynamically learn MAC addresses and save them to the running configuration?'
✗
Azure Virtual Network peering
Why it's wrong here
Incorrect: Azure Virtual Network peering is used to connect virtual networks, enabling traffic between them. It does not provide subscription-based streaming of operational updates.
When this WOULD be correct
In a question asking for a method to automatically reduce broadcast traffic in a VLAN trunking environment by dynamically pruning unused VLANs from trunk links, VTP pruning would be the correct answer.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.
✓Azure Event GridCorrect answer▾
Why this is correct
Correct: Azure Event Grid follows a publish-subscribe model, allowing network administrators to subscribe to events from Azure resources and receive real-time updates when configurations change.
✗Azure BackupWrong answer — click to see why▾
Why this is wrong here
TFTP backup is a file transfer protocol used for backing up device configurations or images, not for streaming operational updates. It requires polling and does not support subscription-based, real-time data streaming.
★ When this WOULD be the correct answer
A question asking for the best method to back up router configurations to a central server using a simple, lightweight protocol without authentication or directory browsing would make TFTP the correct answer.
Why candidates choose this
Candidates may confuse TFTP with a method for transferring operational data because it is commonly used for network device management, but it lacks the push-based, subscription model required for streaming updates.
✗Azure Network WatcherWrong answer — click to see why▾
Why this is wrong here
Port security sticky learning is a security feature that dynamically learns MAC addresses on a switch port to prevent unauthorized access, not a mechanism for streaming operational updates or telemetry data.
★ When this WOULD be the correct answer
In a question asking for a method to automatically learn and secure MAC addresses on a switch port without manual configuration, such as 'Which feature allows a switch to dynamically learn MAC addresses and save them to the running configuration?'
Why candidates choose this
Candidates may confuse 'sticky learning' with continuous data collection or monitoring, assuming it 'streams' updates because it dynamically learns MAC addresses over time.
✗Azure Virtual Network peeringWrong answer — click to see why▾
Why this is wrong here
VTP pruning is a VLAN management feature that reduces unnecessary broadcast traffic on trunk links, not a mechanism for streaming operational updates from devices.
★ When this WOULD be the correct answer
In a question asking for a method to automatically reduce broadcast traffic in a VLAN trunking environment by dynamically pruning unused VLANs from trunk links, VTP pruning would be the correct answer.
Why candidates choose this
Candidates may confuse 'pruning' with 'streaming' or think that VTP pruning provides real-time updates about VLAN changes, but it does not stream device operational data.
Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse Azure Network Watcher with a streaming service because it provides monitoring capabilities, but it is primarily a diagnostic and analysis tool that often requires manual polling or scheduled queries, not a subscription-based push model.
Detailed technical explanation
How to think about this question
Model-driven telemetry relies on YANG data models and protocols like gRPC or NETCONF to define which operational data is streamed, with subscriptions specifying update triggers (e.g., on-change or periodic). Under the hood, the device pushes structured data (e.g., in JSON or GPB format) to a collector, which is critical for real-time monitoring in large-scale networks where polling via SNMP would be inefficient.
KKey Concepts to Remember
Azure Event Grid
Event Subscription
Publish-Subscribe Model
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
Azure Event Grid
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-104 question in full detail.
Implement and Manage Virtual Networking — This question tests Implement and Manage Virtual Networking — Azure Event Grid.
What is the correct answer to this question?
The correct answer is: Azure Event Grid — Azure Event Grid provides an event-driven, publish-subscribe model that delivers real-time notifications when Azure resources change state. It uses event subscriptions to push updates to subscribers as changes occur, eliminating the need for polling. This aligns with the requirement for a subscription-based mechanism to stream operational updates.
What should I do if I get this AZ-104 question wrong?
Review azure Event Grid, then practise related AZ-104 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Azure Event Grid
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