Two VNets are peered. AppVNet contains VMs that access a private endpoint in DataVNet successfully by IP, but name resolution fails for the storage FQDN. The private DNS zone is linked only to DataVNet. What should you do?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
Distractor review
Create another peering connection from AppVNet to DataVNet.
Peering already exists, and peering does not automatically extend private DNS zone visibility across VNets.
Best answer
Add a virtual network link from the private DNS zone to AppVNet.
Private endpoint name resolution depends on the private DNS zone being linked to the VNet where the clients reside. Because AppVNet is not linked to the zone, its VMs cannot resolve the private endpoint FQDN even though IP connectivity exists. Adding a virtual network link from the private DNS zone to AppVNet makes the private records available to those clients.
Distractor review
Create a public DNS zone with the same name as the private zone.
A public DNS zone does not provide private endpoint resolution and can create conflicting records instead of fixing the lookup problem.
Distractor review
Assign a public IP address to the private endpoint.
Private endpoints are intended to use private addresses. Adding a public IP defeats the purpose and does not solve the DNS zone linkage issue.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
You need to create a storage account that provides the lowest-cost redundant storage for non-critical data and only needs protection against local disk or server failure within a single datacenter. Which redundancy option should you choose?
FAQ
Questions learners often ask
What does this AZ-104 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Add a virtual network link from the private DNS zone to AppVNet. — Private endpoint connectivity often depends on DNS as much as on network reachability. If the private DNS zone is linked only to DataVNet, clients in AppVNet may reach the address by IP but still fail to resolve the private FQDN. The correct fix is to link the private DNS zone to AppVNet so the private records are visible where the clients live. Why others are wrong: Additional VNet peering does not share private DNS zone data. A public DNS zone is the wrong place for private endpoint records and can conflict with the intended name resolution path. Assigning a public IP to the private endpoint is contrary to the design goal and does not address DNS visibility.
What should I do if I get this AZ-104 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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