Question 1easymultiple choice
Full question →easymultiple choiceObjective-mapped
Exhibit
Workload notes: - Region: East US - Two application VMs will run in the same region - Requirement: survive planned host maintenance and a host failure - Requirement: no need for datacenter-level resilience
Based on the exhibit, the business wants two Azure VMs to stay available if a host is patched or fails. A full datacenter outage is not part of the requirement. What 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
Deploy the VMs in an availability set.
An availability set is designed to protect VMs from host-level issues such as planned maintenance and individual hardware failures. It spreads VMs across update and fault domains, which fits the requirement exactly when datacenter-level protection is not needed.
B
Distractor review
Deploy the VMs in the same availability zone.
Availability zones are used when you want protection from an entire datacenter failure. That is more resilience than the scenario requires, so it is not the best fit.
C
Distractor review
Use a virtual machine scale set with autoscale only.
A scale set can provide multiple instances, but autoscale is for scaling capacity and not specifically for host-level fault isolation in this scenario.
D
Distractor review
Place both VMs on a dedicated host.
A dedicated host isolates VMs on physical hardware, but it does not by itself provide the host-update and fault-domain spreading that an availability set provides for this requirement.
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: Deploy the VMs in an availability set. — An availability set is the right answer because the requirement is to tolerate host maintenance and host failure within a region. Availability sets distribute VMs across update and fault domains so Azure can keep at least part of the workload available during those events. Because the scenario does not require protection from an entire datacenter outage, availability zones would be more than necessary. Why others are wrong: Availability zones are intended for datacenter-level resilience, which the scenario does not ask for. A virtual machine scale set helps with horizontal scaling, not the specific host-failure protection described here. A dedicated host gives hardware isolation, but it is not the standard mechanism for this kind of availability requirement.
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.
Discussion
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