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 create 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. What should you configure?
A private DNS zone linked to VNet-App
A private DNS zone provides the required private name resolution.
A user-defined route on the subnet
Why wrong: Routes affect packet forwarding, not DNS resolution.
An additional public IP address
Why wrong: A public IP is not needed for private endpoint name resolution.
An Azure Firewall policy
Why wrong: Firewall policy controls filtering and does not provide DNS mapping.
Answer choices
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
A private DNS zone linked to VNet-App is required because Azure Private Endpoint uses a private IP address from the virtual network, but the storage account's fully qualified domain name (FQDN) must resolve to that private IP within the VNet. By linking a private DNS zone (e.g., `privatelink.blob.core.windows.net`) to VNet-App and configuring an A record for the endpoint's private IP, VMs can resolve the storage account name to the correct private address. Without this, DNS resolution would fall back to the public IP, defeating the purpose of the private endpoint.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
A private DNS zone linked to VNet-App
Why this is correct
A private DNS zone provides the required private name resolution.
Related concept
Read the scenario before looking for a memorised answer.
A user-defined route on the subnet
Why it's wrong here
Routes affect packet forwarding, not DNS resolution.
An additional public IP address
Why it's wrong here
A public IP is not needed for private endpoint name resolution.
An Azure Firewall policy
Common exam traps
The trap here is that candidates often confuse network-level controls (like UDRs or firewalls) with DNS resolution, assuming they can force traffic to a private IP without configuring name resolution, but private endpoints require explicit DNS configuration to ensure the FQDN resolves to the private IP.
Detailed technical explanation
Azure Private Endpoint creates a network interface with a private IP in the VNet, but DNS resolution relies on a private DNS zone (or custom DNS forwarder) to override public DNS records. The private DNS zone must be linked to the VNet with the 'auto-registration' feature disabled for private endpoint records, and the zone name must match the storage account's subdomain (e.g., `privatelink.blob.core.windows.net`). In hybrid scenarios, you may also need to configure conditional forwarding on on-premises DNS servers to resolve the private endpoint's FQDN.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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
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FAQ
Implement and Manage Virtual Networking — This question tests Implement and Manage Virtual Networking — Read the scenario before looking for a memorised answer..
The correct answer is: A private DNS zone linked to VNet-App — A private DNS zone linked to VNet-App is required because Azure Private Endpoint uses a private IP address from the virtual network, but the storage account's fully qualified domain name (FQDN) must resolve to that private IP within the VNet. By linking a private DNS zone (e.g., `privatelink.blob.core.windows.net`) to VNet-App and configuring an A record for the endpoint's private IP, VMs can resolve the storage account name to the correct private address. Without this, DNS resolution would fall back to the public IP, defeating the purpose of the private endpoint.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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