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. An app in a VNet must read and write blobs privately, and the team wants the blob endpoint name to resolve to a private IP without exposing the service publicly. 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 endpoint for the storage account and a private DNS zone for blob name resolution.
Option D is correct because a private endpoint assigns the storage account a private IP from the VNet, ensuring all traffic to the blob endpoint stays within Microsoft's backbone. A private DNS zone (e.g., `privatelink.blob.core.windows.net`) is required so that the blob endpoint name resolves to that private IP instead of the public IP, meeting the requirement for private name resolution without any public exposure.
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 and a storage firewall allow rule.
Why it's wrong here
Service endpoints still use the public service endpoint and do not provide a private IP.
✗
A public IP address for the app and allow access from that IP in the storage firewall.
Why it's wrong here
This keeps the service public and does not meet the private connectivity requirement.
✗
An NSG rule that allows outbound TCP 443 from the app subnet to storage.
Why it's wrong here
NSGs control traffic, but they do not create private name resolution or service exposure.
✓
A private endpoint for the storage account and a private DNS zone for blob name resolution.
Why this is correct
Private endpoints give the storage service a private IP in the VNet, and DNS must resolve to it.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse service endpoints (which only provide source IP preservation and firewall rules) with private endpoints (which provide a true private IP and private DNS resolution), leading them to pick Option A thinking it achieves private connectivity when it does not change the public DNS resolution.
Detailed technical explanation
How to think about this question
A private endpoint uses a network interface (NIC) in the VNet with a private IP from the subnet, and traffic is routed over the Microsoft backbone via Private Link, bypassing the public internet. The private DNS zone must be linked to the VNet (or a hub VNet) so that DNS queries for `<storageaccount>.blob.core.windows.net` return the private IP; without this, the default public CNAME would still resolve to the public endpoint. In real-world scenarios, this setup is critical for compliance (e.g., HIPAA, PCI-DSS) where data must never traverse the public internet.
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 endpoint for the storage account and a private DNS zone for blob name resolution. — Option D is correct because a private endpoint assigns the storage account a private IP from the VNet, ensuring all traffic to the blob endpoint stays within Microsoft's backbone. A private DNS zone (e.g., `privatelink.blob.core.windows.net`) is required so that the blob endpoint name resolves to that private IP instead of the public IP, meeting the requirement for private name resolution without any public exposure.
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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