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.
A storage account has public network access disabled. A VM in VNet-App can reach a private endpoint for the account, but the storage name still resolves to the public IP address from the VM, and connections are denied. What should the administrator 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 for the storage blob endpoint linked to VNet-App.
When public network access is disabled on a storage account and a private endpoint is configured, the storage account's public DNS name must resolve to the private endpoint's private IP address within the virtual network. By default, the DNS name continues to resolve to the public IP address, causing connection failures. Linking a private DNS zone (privatelink.blob.core.windows.net) to VNet-App enables automatic resolution of the storage blob endpoint to the private IP address, allowing the VM to connect successfully.
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 service endpoint on the subnet so the storage account uses a private IP address.
Why it's wrong here
Service endpoints do not give the storage account a private IP address in the VNet.
✓
A private DNS zone for the storage blob endpoint linked to VNet-App.
Why this is correct
Private DNS is needed so the blob FQDN resolves to the private endpoint IP inside the VNet.
Related concept
Read the scenario before looking for a memorised answer.
✗
A storage account access key on the VM so the public endpoint will accept the connection.
Why it's wrong here
Authentication does not fix name resolution or the fact that public network access is disabled.
✗
A user-defined route sending storage traffic to the virtual network gateway.
Why it's wrong here
A route table does not rewrite DNS and does not provide private endpoint name resolution.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse service endpoints (which still use the public endpoint) with private endpoints (which use a private IP address), and assume that disabling public network access alone is sufficient without configuring DNS resolution to point to the private endpoint.
Detailed technical explanation
How to think about this question
Private endpoints use Azure Private Link to assign a private IP address from the virtual network to the storage account. The private DNS zone (privatelink.blob.core.windows.net) must be linked to the virtual network to override the public DNS resolution; without it, the VM's DNS query returns the public IP address, and the connection is denied because the storage account's firewall blocks all public traffic. This DNS resolution behavior is governed by Azure's DNS architecture, where a private DNS zone takes precedence over public DNS for linked virtual networks.
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 for the storage blob endpoint linked to VNet-App. — When public network access is disabled on a storage account and a private endpoint is configured, the storage account's public DNS name must resolve to the private endpoint's private IP address within the virtual network. By default, the DNS name continues to resolve to the public IP address, causing connection failures. Linking a private DNS zone (privatelink.blob.core.windows.net) to VNet-App enables automatic resolution of the storage blob endpoint to the private IP address, allowing the VM to connect successfully.
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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