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CV0-004 Practice Question: Is deploying a new application that requires high…
A cloud engineer is deploying a new application that requires high availability. The solution must include automated failover and load balancing. Which TWO of the following should the engineer implement?
⚠ Common exam trap
Candidates often confuse data backup or database replication (options B and C) with application-level high availability and load balancing, failing to recognize that automated failover and load balancing require multiple active compute instances and a traffic distributor, not just data redundancy.
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
✓
Configure an auto scaling group with a minimum of two instances across two availability zones.
Deploying an auto scaling group with a minimum of two instances across two availability zones ensures that if one instance or zone fails, the other can continue serving traffic, providing high availability. This setup also supports automated failover by replacing unhealthy instances automatically, and it works with a load balancer to distribute traffic. The combination of multi-AZ placement and auto scaling is a foundational pattern for fault-tolerant architectures in cloud environments.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure an auto scaling group with a minimum of two instances across two availability zones.
Why this is correct
Auto scaling provides automated replacement and multi-AZ distribution.
- ✗
Take daily snapshots of the instance and store them in a different region.
Why it's wrong here
Snapshots are for backup, not automated failover.
- ✗
Configure a read replica in a different region for failover.
Why it's wrong here
Read replicas are for database read scaling, not general application failover.
- ✗
Deploy the application on a single large instance with more resources.
Why it's wrong here
Single instance is a single point of failure.
- ✓
Place the instances behind an application load balancer with health checks.
Why this is correct
Load balancer distributes traffic and routes away from unhealthy instances.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.