CV0-004 Deployment Practice Question
A cloud engineer is deploying a web application on AWS and needs to ensure that the application is fault-tolerant across multiple Availability Zones. The engineer plans to use an Auto Scaling group with a launch template. What should the engineer configure to ensure that instances are launched in multiple Availability Zones?
⚠ Common exam trap
The trap here is thinking that the launch template defines Availability Zones, but actually the subnets specified in the Auto Scaling group determine the AZ placement of instances.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Specify multiple subnets, each in a different Availability Zone, in the Auto Scaling group configuration.
Configuring the Auto Scaling group with multiple subnets in different Availability Zones ensures that instances are launched across those AZs, providing fault tolerance. This is the standard and simplest method to achieve multi-AZ deployment for an Auto Scaling group, unlike using a single subnet or multiple groups.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Specify multiple subnets, each in a different Availability Zone, in the Auto Scaling group configuration.
Why this is correct
An Auto Scaling group can be configured with multiple subnets across different Availability Zones. When the group scales, it launches instances evenly across the specified subnets, providing fault tolerance. This directly meets the requirement for multi-AZ deployment without additional complexity.
- ✗
Create multiple Auto Scaling groups, each with a single subnet in a different Availability Zone.
Why it's wrong here
While multiple Auto Scaling groups can achieve multi-AZ distribution, this approach adds management overhead and does not automatically balance capacity across AZs. A single Auto Scaling group with multiple subnets is simpler and provides the same fault tolerance, making this option unnecessarily complex.
- ✗
Use a single subnet and enable cross-zone load balancing on the load balancer.
Why it's wrong here
Cross-zone load balancing distributes traffic across instances in multiple AZs, but if the Auto Scaling group uses a single subnet, all instances are launched in one AZ. This does not provide fault tolerance at the instance level, as an AZ failure would still take down all instances.
- ✗
Configure the launch template to specify multiple Availability Zones.
Why it's wrong here
A launch template defines instance configuration but does not specify Availability Zones. The AZ placement is determined by the subnets assigned to the Auto Scaling group. Configuring the launch template with multiple AZs is not possible and would not achieve the desired distribution.
Visual reference
Go deeper
Related to this question
About these practice questions
One of 834 original CV0-004 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
This CV0-004 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CV0-004 exam.