CV0-004 Cloud Architecture and Design Practice Question
An e-commerce application experiences variable traffic with sudden spikes during flash sales. The application is designed to be stateless. Which scaling approach should the cloud architect implement to handle these spikes efficiently?
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
✓
Horizontal auto-scaling based on CPU utilization
Horizontal scaling (adding more instances) combined with auto-scaling based on metrics like CPU utilization can dynamically handle traffic spikes. Stateless design enables seamless addition/removal of instances.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Vertical scaling on a single large instance
Why it's wrong here
Vertical scaling has limits and may cause downtime; does not handle sudden spikes as well as horizontal.
- ✓
Horizontal auto-scaling based on CPU utilization
Why this is correct
Auto-scaling adds instances during spikes and removes them when demand drops, leveraging stateless design.
- ✗
Using a load balancer with active-passive failover
Why it's wrong here
Active-passive provides high availability, not dynamic scaling.
- ✗
Pre-provisioning a fixed cluster of instances
Why it's wrong here
Fixed cluster wastes resources during low demand and may not handle spikes if capacity is insufficient.
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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.