Question 1hardmulti select
Full question →hardmulti selectObjective-mapped
A data disk on VM-Data01 was corrupted after a bad patch, and you already have a snapshot taken last night. The OS disk should remain unchanged. Which two actions should you take to restore only the data disk? Select two.
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 managed disk from the snapshot.
A snapshot is not directly attached to a VM. You must first create a managed disk from the snapshot so Azure can present it as an attachable storage object.
B
Best answer
Attach the restored managed disk to VM-Data01.
After the managed disk is created from the snapshot, attaching it to the VM replaces the corrupted data disk without changing the OS disk. That restores only the affected storage volume.
C
Distractor review
Redeploy the VM and expect the data disk to revert automatically.
Redeploying a VM changes host placement, not disk contents. It does not roll back a corrupted data disk to a previous snapshot state.
D
Distractor review
Generalize the VM and redeploy it from the snapshot.
Generalization is a template workflow and does not restore a single data disk. It would add unnecessary disruption and does not target the corrupted volume only.
E
Distractor review
Replace the snapshot with the current data disk to roll back the VM.
A snapshot is a point-in-time source object, not something you overwrite with the live disk. The direction of restore is snapshot to managed disk, not the reverse.
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 managed disk from the snapshot. — To restore only the damaged data disk, you first create a managed disk from the existing snapshot and then attach that disk to the VM. This keeps the OS disk unchanged while replacing only the corrupted data volume. It is the standard Azure workflow for disk-level recovery when you already have a snapshot available. Why others are wrong: Redeploying a VM does not revert disk contents, and generalizing is for image creation rather than targeted disk recovery. You also cannot roll back by replacing the snapshot with the current disk. The required sequence is snapshot to managed disk, then managed disk to VM. Anything else either changes the wrong scope or does not recover the data at all.
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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