Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A development team runs Windows and Linux VMs in a single Azure subnet. The VMs must access an Azure Storage account, and the security team wants to restrict the storage account so only that subnet can reach it. The team does not want to create a private IP for the storage account or change DNS records. What should the administrator configure?
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
Distractor review
A private endpoint for the storage account and a private DNS zone.
Private endpoints do create a private IP, which the team specifically does not want, and they usually require DNS updates for name resolution.
B
Best answer
A service endpoint on the subnet and a storage account network rule allowing that subnet.
Service endpoints extend the subnet identity to the Azure Storage service without assigning a private IP to the storage account. This allows the administrator to restrict access to the specific Azure subnet while keeping the service reachable through its normal public DNS name. It fits the requirement to avoid DNS changes and private IP creation.
C
Distractor review
A site-to-site VPN between the subnet and the storage account.
Storage accounts do not participate in VPN tunnels; VPN connectivity is used between networks, not directly to PaaS endpoints.
D
Distractor review
A user-defined route that sends storage traffic to the default internet next hop.
Routes do not restrict storage access to a subnet and do not provide the access-control behavior required by the security team.
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 on the subnet and a storage account network rule allowing that subnet. — A service endpoint is the right fit when Azure resources in a specific subnet need access to a PaaS service without introducing a private IP or changing DNS. By enabling the Microsoft.Storage service endpoint on the subnet and then allowing that subnet in the storage account firewall, access is limited to approved Azure network traffic while the storage account still uses its standard public name. Why others are wrong: A creates the very private IP and DNS change the team wants to avoid. C is not a valid design for Azure Storage access because the storage account is not a tunnel endpoint. D changes routing only and does not implement the storage firewall restriction the business asked for.
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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