Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A VM in a subnet must access an Azure Storage account without creating a private endpoint. The organization is fine with the storage account remaining on its public endpoint, but traffic should stay on the Azure backbone rather than the public internet. Which feature should you use?
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.
A
Best answer
A service endpoint for Microsoft.Storage on the subnet.
A service endpoint extends the VNet identity to the supported Azure service and keeps traffic on the Microsoft backbone. It does not create a private IP or require DNS changes, which matches this requirement. The storage account can remain on its public endpoint while still accepting traffic only from the allowed subnet.
B
Distractor review
A private endpoint and a private DNS zone.
A private endpoint would provide private IP access, but the question explicitly says not to create one. It also typically requires DNS changes to resolve the service name privately.
C
Distractor review
A NAT gateway attached to the subnet.
A NAT gateway controls outbound source IP translation. It does not provide service-specific connectivity over the Microsoft backbone or restrict access to the storage account.
D
Distractor review
A VPN gateway connection to the storage account resource group.
VPN gateways create network-to-network or user-to-network tunnels. They are not the Azure feature used to access a PaaS storage account over the backbone without private endpointing.
Common exam trap
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Technical deep dive
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
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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
A route table contains these entries: 10.0.0.0/8 with next hop Virtual appliance, and 10.1.1.0/24 with next hop Virtual network gateway. Which next hop will Azure use for traffic to 10.1.1.5?
Question 2
You are deploying a stateless web application on Azure virtual machines. The solution must automatically add and remove instances based on CPU demand and allow all instances to be managed as one logical group. Which Azure compute feature should you deploy?
Question 3
You are deploying a Windows Server VM for an internal app. The VM must support Secure Boot and vTPM later, its OS disk must survive host moves, and the team wants the lowest-cost managed disk tier that still behaves like a normal writable OS disk. Which two choices should you make? Select two.
Question 4
You need to deploy several identical virtual machines and ensure that the failure of a single Azure host does not affect all of them. Which feature should you use?
Question 5
You need to connect VNet-Hub and VNet-Spoke so that resources in both virtual networks can communicate privately over the Microsoft backbone. Both virtual networks are in the same region. What should you configure?
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?
CIDR notation defines the prefix length.
What is the correct answer to this question?
The correct answer is: A service endpoint for Microsoft.Storage on the subnet. — A service endpoint is the right choice when you want a subnet to reach a supported Azure PaaS service over the Microsoft backbone without giving the service a private IP. It is commonly used when the public endpoint can remain enabled but access should be restricted to trusted VNets or subnets. This differs from private endpoints, which place a private IP in the VNet and usually require private DNS. Why others are wrong: A private endpoint is the wrong fit because the requirement explicitly says not to create one. NAT gateways only affect outbound SNAT and do not change how the storage service is reached. VPN gateways are for hybrid connectivity, not for extending VNet identity to a specific Azure Storage account.
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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