The correct deployment strategy is to create an auto-scaling group spanning multiple Availability Zones. This approach directly satisfies both requirements of automatic scaling and high availability because the auto-scaling group distributes instances across zones, and the load balancer automatically routes traffic away from a failed zone to healthy instances in the remaining zones. On the CompTIA Cloud+ CV0-004 exam, this concept tests your understanding of how to design for fault tolerance and elasticity simultaneously, often appearing in scenario-based questions where a single-zone deployment is a common trap. A key memory tip is to think of the auto-scaling group as the "resilience container" that must stretch across zones—if it’s confined to one zone, a zone failure takes down the entire application. Remember the mnemonic "AZ-ASG" to link Availability Zones with Auto-Scaling Groups for zone-failure-proof designs.
CV0-004 Deployment Practice Question
This CV0-004 practice question tests your understanding of deployment. 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 company is deploying a new web application in a hybrid cloud environment. The application must be able to scale out automatically during peak usage and scale in during low usage. The deployment must also ensure that the application remains available if a single Availability Zone fails. Which deployment strategy should the architect recommend?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create an auto-scaling group spanning multiple Availability Zones.
Option B is correct because an auto-scaling group spanning multiple Availability Zones ensures both automatic scaling based on demand and high availability. If one Availability Zone fails, the load balancer distributes traffic to healthy instances in the remaining zones, meeting the requirement for continuous availability during a zone failure.
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.
✗
Deploy a cluster of instances in a single Availability Zone with a load balancer.
Why it's wrong here
Single AZ is a single point of failure.
✓
Create an auto-scaling group spanning multiple Availability Zones.
Why this is correct
Auto-scaling provides automatic scaling and multi-AZ ensures high availability.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use a single large instance and manually resize during peak periods.
Why it's wrong here
Manual scaling is not automatic and can cause downtime.
✗
Deploy a load balancer in front of a single instance.
Why it's wrong here
This provides no scaling or fault tolerance.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think a load balancer alone provides high availability, but without multiple instances across zones and auto-scaling, a single zone failure still causes downtime.
Detailed technical explanation
How to think about this question
An auto-scaling group uses a launch template or configuration to provision EC2 instances across specified Availability Zones, and integrates with Elastic Load Balancing to distribute traffic. The auto-scaling group's minimum, maximum, and desired capacity settings, combined with scaling policies (e.g., based on CPU utilization or request count), enable dynamic scaling. In a real-world scenario, if a zone experiences an outage, the auto-scaling group automatically launches replacement instances in the remaining healthy zones to maintain capacity, while the load balancer's health checks reroute traffic away from failed instances.
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
A practitioner preparing for the CV0-004 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create an auto-scaling group spanning multiple Availability Zones. — Option B is correct because an auto-scaling group spanning multiple Availability Zones ensures both automatic scaling based on demand and high availability. If one Availability Zone fails, the load balancer distributes traffic to healthy instances in the remaining zones, meeting the requirement for continuous availability during a zone failure.
What should I do if I get this CV0-004 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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