AZ-104 Deploy and Manage Azure Compute Practice Question
This AZ-104 practice question tests your understanding of deploy and manage azure compute. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You need to run a stateless web workload on Azure virtual machines and automatically increase or decrease instance count based on demand. You also want a single management boundary for the VM instances. Which solution should you deploy?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A Virtual Machine Scale Set
A Virtual Machine Scale Set (VMSS) is the correct solution because it provides an autoscaling group of identical VMs that can automatically increase or decrease instance count based on demand (e.g., CPU or memory metrics). It also offers a single management boundary, allowing you to manage, monitor, and scale all instances as a unified resource rather than individually.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
A Virtual Machine Scale Set
Why this is correct
VM Scale Sets support group management and autoscaling for identical VM instances.
Related concept
Read the scenario before looking for a memorised answer.
✗
An availability set with individual VMs
Why it's wrong here
Availability sets do not provide native autoscaling or unified fleet management.
✗
Azure Backup
Why it's wrong here
Azure Backup protects VMs but does not host or scale web workloads.
✗
A Recovery Services vault
Why it's wrong here
A Recovery Services vault is for backup and recovery, not application hosting and scaling.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse an availability set (which provides high availability but no scaling) with a Virtual Machine Scale Set (which provides both scaling and a single management boundary), or they mistakenly think backup/recovery services can manage compute scaling.
Detailed technical explanation
How to think about this question
VMSS uses a scale-out policy based on autoscale rules defined in Azure Monitor, which can trigger instance additions or removals using metrics like average CPU percentage or a custom metric. Under the hood, VMSS leverages the same virtual machine extensions and networking (e.g., load balancer integration) as individual VMs but with orchestration modes (uniform or flexible) that affect how instances are created and updated. In a real-world scenario, a stateless web workload behind a load balancer can use VMSS to handle traffic spikes by automatically adding instances, then scaling down during low demand to optimize costs.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-104 question in full detail.
Deploy and Manage Azure Compute — This question tests Deploy and Manage Azure Compute — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A Virtual Machine Scale Set — A Virtual Machine Scale Set (VMSS) is the correct solution because it provides an autoscaling group of identical VMs that can automatically increase or decrease instance count based on demand (e.g., CPU or memory metrics). It also offers a single management boundary, allowing you to manage, monitor, and scale all instances as a unified resource rather than individually.
What should I do if I get this AZ-104 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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