CV0-004 Cloud Architecture and Design Practice Question
A cloud architect is deploying a web application across multiple availability zones within a single region to achieve high availability. The application requires that if one availability zone fails, traffic should automatically be rerouted to the remaining zones without manual intervention. Which configuration is required?
⚠ Common exam trap
Test-takers frequently confuse high availability with disaster recovery, mistakenly choosing a cross-region active-passive setup (Option A) when the question explicitly specifies a single region and automatic rerouting.
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
✓
Active-active across availability zones with a load balancer
Deploying an active-active configuration across multiple availability zones with a load balancer ensures that traffic is automatically distributed to healthy instances. If one availability zone fails, the load balancer's health checks detect the failure and reroute traffic to the remaining zones without manual intervention, meeting the high availability requirement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Active-passive with a standby instance in a different region
Why it's wrong here
Active-passive with cross-region fails over to a different region, not within the same region across AZs.
- ✓
Active-active across availability zones with a load balancer
Why this is correct
Active-active across AZs with a load balancer provides automatic failover within the region.
- ✗
Vertical scaling of instances in a single availability zone
Why it's wrong here
Vertical scaling does not provide HA across AZs.
- ✗
Cold standby with daily backups
Why it's wrong here
Cold standby has long RTO and requires manual intervention.
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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.