- A
Add a route table to the spoke subnet pointing to the private endpoint IP.
Why wrong: Routing is not the problem because the VM already reaches the service by IP. Name resolution requires DNS configuration.
- B
Link the private DNS zone to the spoke VNet as well.
Private DNS zones must be linked to every VNet that needs to resolve the private endpoint name through Azure-provided DNS behavior. Since the spoke VNet is not linked to the zone, its VM does not receive the private endpoint record and cannot resolve the storage account FQDN correctly. Linking the zone to the spoke VNet allows name resolution to return the private IP.
- C
Enable gateway transit on the peering connection.
Why wrong: Gateway transit is for sharing a VPN or ExpressRoute gateway, not for distributing private DNS zone records.
- D
Create an NSG rule to allow DNS traffic to the storage account.
Why wrong: NSGs do not control DNS record creation, and the storage account is not the source of the DNS response.
Quick Answer
The correct answer is to link the private DNS zone to the spoke VNet as well. This is necessary because while network connectivity is confirmed—the VM can reach the private endpoint by IP address—name resolution fails when the private DNS zone is linked only to the hub VNet. The private DNS zone holds the FQDN-to-private-IP mapping for the storage account, and without a link to the spoke, Azure DNS does not serve that record to the spoke’s virtual network. On the AZ-104 exam, this scenario tests your understanding of how private DNS zone links propagate resolution across peered VNets; a common trap is assuming peering alone handles DNS, but peering only enables IP routing. Remember the memory tip: “Peering for packets, linking for names”—you need both a VNet peering for connectivity and a DNS zone link for resolution.
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Two VNets are peered successfully, and a VM in the spoke can reach a private endpoint in the hub by IP address. However, the VM cannot resolve the storage account name to the private endpoint FQDN. The private DNS zone is linked only to the hub VNet. What should the administrator do?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Link the private DNS zone to the spoke VNet as well.
The VM can reach the private endpoint by IP, confirming that network connectivity (peering and routing) is working. However, name resolution fails because the private DNS zone, which contains the private endpoint FQDN mapping, is linked only to the hub VNet. By linking the private DNS zone to the spoke VNet (option B), the spoke VMs will use Azure-provided DNS to resolve the storage account name to the private IP, enabling seamless name resolution across the peered VNets.
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.
- ✗
Add a route table to the spoke subnet pointing to the private endpoint IP.
- ✓
Link the private DNS zone to the spoke VNet as well.
Why this is correct
Private DNS zones must be linked to every VNet that needs to resolve the private endpoint name through Azure-provided DNS behavior. Since the spoke VNet is not linked to the zone, its VM does not receive the private endpoint record and cannot resolve the storage account FQDN correctly. Linking the zone to the spoke VNet allows name resolution to return the private IP.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable gateway transit on the peering connection.
- ✗
Create an NSG rule to allow DNS traffic to the storage account.
Why it's wrong here
NSGs do not control DNS record creation, and the storage account is not the source of the DNS response.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume that VNet peering automatically extends DNS resolution for private endpoints, but in reality, each VNet must be explicitly linked to the private DNS zone for name resolution to work across the peering.
Detailed technical explanation
How to think about this question
Azure Private DNS zones use a split-horizon DNS mechanism where the zone is authoritative only within VNets that are linked to it. When a VM in the spoke VNet queries the storage account FQDN, Azure DNS checks if the spoke VNet is linked to the private zone; if not, it falls back to public DNS resolution, returning the public IP instead of the private endpoint IP. Linking the zone to the spoke VNet enables automatic registration and resolution of private endpoint FQDNs, leveraging the Azure DNS infrastructure without requiring custom DNS servers or conditional forwarders.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Implement and Manage Virtual Networking — study guide chapter
Learn the concepts, then practise the questions
- →
Implement and Manage Virtual Networking practice questions
Targeted practice on this topic area only
- →
All AZ-104 questions
1,170 questions across all exam domains
- →
AZ-104 study guide
Full concept coverage aligned to exam objectives
- →
AZ-104 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related AZ-104 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Manage Azure Identities and Governance practice questions
Practise AZ-104 questions linked to Manage Azure Identities and Governance.
Implement and Manage Storage practice questions
Practise AZ-104 questions linked to Implement and Manage Storage.
Deploy and Manage Azure Compute practice questions
Practise AZ-104 questions linked to Deploy and Manage Azure Compute.
Implement and Manage Virtual Networking practice questions
Practise AZ-104 questions linked to Implement and Manage Virtual Networking.
Monitor and Maintain Azure Resources practice questions
Practise AZ-104 questions linked to Monitor and Maintain Azure Resources.
AZ-104 Azure RBAC practice questions
Practise AZ-104 questions linked to AZ-104 Azure RBAC.
AZ-104 storage account practice questions
Practise AZ-104 questions linked to AZ-104 storage account.
AZ-104 virtual network practice questions
Practise AZ-104 questions linked to AZ-104 virtual network.
AZ-104 NSG practice questions
Practise AZ-104 questions linked to AZ-104 NSG.
AZ-104 Azure Monitor practice questions
Practise AZ-104 questions linked to AZ-104 Azure Monitor.
AZ-104 backup practice questions
Practise AZ-104 questions linked to AZ-104 backup.
AZ-104 managed identity practice questions
Practise AZ-104 questions linked to AZ-104 managed identity.
Practice this exam
Start a free AZ-104 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this AZ-104 question test?
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: Link the private DNS zone to the spoke VNet as well. — The VM can reach the private endpoint by IP, confirming that network connectivity (peering and routing) is working. However, name resolution fails because the private DNS zone, which contains the private endpoint FQDN mapping, is linked only to the hub VNet. By linking the private DNS zone to the spoke VNet (option B), the spoke VMs will use Azure-provided DNS to resolve the storage account name to the private IP, enabling seamless name resolution across the peered VNets.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 11, 2026
This AZ-104 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-104 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.