CV0-004 Cloud Architecture and Design Practice Question
A company is migrating a legacy monolithic application to the cloud. The application currently runs on a single server with 16 vCPUs and 64 GB RAM. The cloud architect recommends redesigning the application to be stateless and horizontally scalable. What is the primary benefit of this approach?
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
✓
Improved fault tolerance and elasticity
Horizontal scaling allows adding more instances to handle increased load, improving availability and elasticity compared to vertical scaling of a monolithic server.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Lower storage costs
Why it's wrong here
Storage costs are not directly impacted by the scaling approach.
- ✗
Simpler licensing costs
Why it's wrong here
Licensing cost simplification is not the primary driver for redesigning a monolithic application to be stateless and horizontally scalable; the core benefit is achieving elastic fault tolerance and independent scaling of components, which licensing models do not directly address. This option is tempting because moving to the cloud can sometimes reduce per-core or per-instance licensing overhead, but the question’s stem explicitly focuses on architectural redesign for scalability and statelessness, not on procurement cost structures. In a scenario where the goal was purely to reduce software licensing fees by shifting to a pay-as-you-go model, this would be a correct consideration.
- ✓
Improved fault tolerance and elasticity
Why this is correct
Stateless horizontal scaling improves fault tolerance (failure of one instance does not affect others) and allows elastic scaling.
- ✗
Reduced network latency
Why it's wrong here
Horizontal scaling does not inherently reduce latency; it may even increase it due to distribution.
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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.