Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
An on-premises application connects to Azure through an existing site-to-site VPN. The application must access an Azure Blob Storage account over a private IP, and the storage account must not accept public network traffic. Which configuration should the administrator deploy?
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 service endpoint on the on-premises network and a storage account firewall exception.
Service endpoints only extend Azure virtual network identity to supported services and do not provide a private IP for on-premises clients.
B
Best answer
A private endpoint for the storage account in an Azure VNet reachable through the VPN.
A private endpoint gives the storage account a private IP address inside a VNet. Because the on-premises network already reaches Azure through a site-to-site VPN, on-prem clients can reach that private IP over the encrypted tunnel, provided DNS is also configured to resolve the private name correctly. This satisfies both goals: private connectivity and no public network access to the storage account.
C
Distractor review
A NAT gateway on the subnet that hosts the storage account.
A NAT gateway affects outbound internet translation from subnets, not private access to storage accounts.
D
Distractor review
An application security group applied to the storage account.
Application security groups are for VM NIC targeting in NSG rules and do not apply to storage accounts.
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 private endpoint for the storage account in an Azure VNet reachable through the VPN. — The storage account must be reached privately from on-premises, so a private endpoint is the right choice. Private endpoints place the service on a private IP in a VNet, and the existing site-to-site VPN provides the on-premises path into that VNet. Public network access can then be disabled on the storage account. In a full implementation, private DNS also needs to resolve the storage name to the private IP, but the core network feature is the private endpoint. Why others are wrong: Service endpoints do not give on-premises systems a private IP path into Azure, so they cannot satisfy this requirement. A NAT gateway is for outbound internet SNAT and has nothing to do with private storage access. Application security groups are an NSG targeting feature for VMs, not a mechanism for securing Azure Storage connectivity.
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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