Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A storage account must be accessible only from one Azure subnet. The security team does not want a private endpoint or private DNS zone, and they are fine with the storage account continuing to use its public FQDN. Which configuration 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
Create a service endpoint on the subnet and allow that subnet in the storage account firewall.
A service endpoint is the correct design because it restricts access to a specific subnet without creating a private IP address for the storage account. The storage account can continue to use its public FQDN, which matches the requirement. By enabling the service endpoint on the subnet and then permitting that subnet in the storage firewall, traffic is locked down while avoiding private endpoint and private DNS complexity.
B
Distractor review
Create a private endpoint for the storage account and disable public network access.
Private endpoints create a private IP address in the VNet, which the scenario explicitly does not want.
C
Distractor review
Use an NSG rule to allow only the subnet to reach port 443 on the storage account.
NSGs do not filter traffic to a PaaS storage account in the way a storage firewall or endpoint feature does.
D
Distractor review
Associate a route table that sends storage traffic to an Azure firewall appliance.
Routing controls next hop selection, but it does not by itself grant subnet-only access to the storage account.
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: Create a service endpoint on the subnet and allow that subnet in the storage account firewall. — The right answer is to use a service endpoint and then authorize the subnet in the storage account firewall. That combination lets resources in the subnet access the storage service over the Azure backbone while the storage account still presents its public endpoint. It is the appropriate choice when you want subnet-based restriction without introducing private endpoints or private DNS management. This also keeps the configuration simpler than a private connectivity design. Why others are wrong: A private endpoint is explicitly disallowed by the requirements because it creates a private IP and usually requires DNS changes. NSGs and route tables do not replace the storage firewall for PaaS access control. They can influence network flow, but they do not by themselves grant or restrict storage account access at the service boundary.
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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