AZ-104 Deploy and Manage Azure Compute Practice Question
This AZ-104 practice question tests your understanding of deploy and manage azure compute. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
A line-of-business app requires protection against a datacenter outage in a region that supports zones. You want the strongest placement resilience available for the VMs. What should you choose?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Availability zone
Availability zones are physically separate datacenters within an Azure region, each with independent power, cooling, and networking. Deploying VMs across zones provides the strongest resilience against a datacenter outage because if one zone fails, the other zones remain operational. This is the highest level of protection available within a single region for IaaS VMs.
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.
✗
Availability set
Why it's wrong here
Availability sets protect against some host failures, but they do not span datacenter boundaries.
✓
Availability zone
Why this is correct
Availability zones place resources in separate datacenters within a region, improving resilience against a datacenter outage.
Related concept
Read the scenario before looking for a memorised answer.
✗
Virtual machine scale set
Why it's wrong here
A scale set helps with deployment and scaling patterns, but it is not itself the resilience boundary being asked for.
✗
Resource lock
Why it's wrong here
A resource lock prevents changes or deletion, but it does not provide availability protection.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse availability sets (which protect against rack-level failures) with availability zones (which protect against full datacenter outages), leading them to choose the weaker option when the question explicitly demands the strongest placement resilience.
Detailed technical explanation
How to think about this question
Azure availability zones offer a 99.99% VM uptime SLA when two or more VMs are deployed across two or more zones within the same region. Each zone is a unique physical location with independent infrastructure, and zone-to-zone latency is typically under 2 milliseconds. For mission-critical workloads, combining availability zones with a load balancer (e.g., Azure Standard Load Balancer) ensures traffic is routed away from a failed zone automatically.
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: Availability zone — Availability zones are physically separate datacenters within an Azure region, each with independent power, cooling, and networking. Deploying VMs across zones provides the strongest resilience against a datacenter outage because if one zone fails, the other zones remain operational. This is the highest level of protection available within a single region for IaaS VMs.
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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