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.
You create a private endpoint for an Azure Storage account and disable public network access on the account. A VM in a peered VNet cannot reach the storage account by name. The private endpoint resides in VNet-App. What is the most likely missing configuration?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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 so the relevant VNet can resolve the storage account to the private endpoint IP
When you create a private endpoint for an Azure Storage account and disable public network access, the storage account's public DNS name must resolve to the private endpoint's private IP address within the VNet. This requires a private DNS zone (privatelink.blob.core.windows.net) linked to the VNet where the VM resides. Without that DNS zone link, the VM in the peered VNet will resolve the storage account name to the public IP, which is unreachable because public access is disabled, causing the connection failure.
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 private DNS zone linked so the relevant VNet can resolve the storage account to the private endpoint IP
Why this is correct
Without correct DNS integration, clients continue resolving the public name instead of the private endpoint address.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
An NSG rule allowing outbound DNS to 8.8.8.8
Why it's wrong here
Public DNS is not the right fix for private endpoint name resolution.
✗
A Recovery Services vault in the peered VNet
Why it's wrong here
Backup infrastructure is unrelated to private endpoint connectivity.
✗
A public IP address on the private endpoint NIC
Why it's wrong here
Private endpoints are designed to use private IP addresses.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume VNet peering automatically extends DNS resolution for private endpoints, but Azure requires explicit private DNS zone links to each VNet that needs to resolve the private endpoint name.
Detailed technical explanation
How to think about this question
Under the hood, Azure Private Link uses a private endpoint NIC with a private IP from the VNet subnet, and DNS resolution relies on Azure Private DNS Zones (e.g., privatelink.blob.core.windows.net) that must be linked to the VNet. When VNets are peered, DNS resolution does not automatically propagate; the private DNS zone must be linked to each peered VNet individually, or a custom DNS server must forward queries appropriately. A common real-world scenario is a hub-and-spoke topology where the private endpoint is in the hub VNet, but spoke VMs fail to connect until the private DNS zone is linked to each spoke VNet.
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 so the relevant VNet can resolve the storage account to the private endpoint IP — When you create a private endpoint for an Azure Storage account and disable public network access, the storage account's public DNS name must resolve to the private endpoint's private IP address within the VNet. This requires a private DNS zone (privatelink.blob.core.windows.net) linked to the VNet where the VM resides. Without that DNS zone link, the VM in the peered VNet will resolve the storage account name to the public IP, which is unreachable because public access is disabled, causing the connection failure.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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