Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A managed data disk on a VM was deleted by mistake. You have a snapshot from before the deletion and want to restore the data with minimal impact to the VM's operating system disk. What should you do?
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 new managed disk from the snapshot and attach it to the VM
This restores the disk contents without rebuilding the VM or changing the OS disk.
B
Distractor review
Redeploy the VM from the marketplace image
Redeploying from an image does not restore the deleted data disk contents from the snapshot.
C
Distractor review
Convert the snapshot directly into an OS disk and boot from it
A data disk snapshot is not the same as a direct OS-disk recovery path for this scenario.
D
Distractor review
Resize the VM to a larger size and the deleted disk will reappear
Changing VM size affects compute resources, but it does not recover deleted storage objects.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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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?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Create a new managed disk from the snapshot and attach it to the VM — The standard recovery path for a deleted managed data disk is to create a new managed disk from the snapshot and then attach that disk to the VM. This preserves the operating system disk and avoids unnecessary rebuild work. It is the most direct way to restore the lost data because snapshots are disk-level recovery points, not whole-VM replacement artifacts. Why others are wrong: Redeploying the VM from a marketplace image would not restore the exact data captured in the snapshot. Turning the snapshot into an OS disk is not the right approach when the problem is a deleted data disk. Increasing VM size has no effect on recovering deleted managed disk resources.
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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