AZ-104 Implement and Manage Virtual Networking Practice Question
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. 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.
You deploy a private endpoint for an Azure Storage account. Virtual machines in VNet-App must resolve the storage account name to the private IP address of the endpoint instead of the public endpoint. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A private DNS zone linked to VNet-App.
Option B is correct because a private endpoint requires DNS resolution to map the storage account's fully qualified domain name (FQDN) to its private IP address. By creating a private DNS zone (privatelink.blob.core.windows.net) and linking it to VNet-App, Azure automatically creates an A-record pointing to the private endpoint's IP, ensuring VMs resolve the storage account name privately instead of via the public endpoint.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
A network security group on the subnet.
Why it's wrong here
An NSG controls traffic filtering, not DNS name resolution.
✓
A private DNS zone linked to VNet-App.
Why this is correct
This enables name resolution of the service to the private endpoint address from resources in the linked VNet.
Related concept
Read the scenario before looking for a memorised answer.
✗
A public DNS zone for the storage account name.
Why it's wrong here
A public DNS zone would not provide private endpoint resolution within the VNet.
✗
A user-defined route table on the subnet.
Why it's wrong here
Route tables control packet forwarding paths, not DNS resolution.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse network-level controls (NSGs, route tables) with DNS resolution, assuming that restricting traffic or routing will force private IP usage, when in fact DNS configuration is the critical missing piece for name resolution.
Detailed technical explanation
How to think about this question
Private endpoints use Azure Private Link to assign a private IP from the VNet to the PaaS resource. DNS resolution is handled by Azure's default split-horizon DNS: without a private DNS zone, the public IP is returned; with a private DNS zone linked to the VNet, the private IP is returned. This zone must be named `privatelink.<service>.core.windows.net` and can be auto-created during private endpoint deployment. In hybrid scenarios, custom DNS servers must forward queries for the private link zone to Azure's internal resolver (168.63.129.16) to resolve correctly.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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.
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 — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A private DNS zone linked to VNet-App. — Option B is correct because a private endpoint requires DNS resolution to map the storage account's fully qualified domain name (FQDN) to its private IP address. By creating a private DNS zone (privatelink.blob.core.windows.net) and linking it to VNet-App, Azure automatically creates an A-record pointing to the private endpoint's IP, ensuring VMs resolve the storage account name privately instead of via the public endpoint.
What should I do if I get this AZ-104 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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