hardMultiple ChoiceObjective-mapped
CV0-004 Practice Question: Is migrating a legacy monolithic application to…
An organization is migrating a legacy monolithic application to the cloud using a re-platform approach (lift and shift with minimal changes). After migration, performance is worse than on-premises. Which of the following is the BEST next step to improve performance without significant application changes?
⚠ Common exam trap
CompTIA often tests the misconception that cloud-native solutions like containers or microservices are always the answer, but the trap here is that the question explicitly limits changes, making vertical scaling the only viable option without re-architecting.
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
✓
Increase the size of the virtual machines and allocate more vCPUs.
In a re-platform (lift and shift) migration, the application's architecture remains unchanged, so performance issues often stem from insufficient cloud resources. Increasing the VM size and allocating more vCPUs directly addresses resource contention without requiring code modifications, making it the best immediate step.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Refactor the application into microservices and use Kubernetes.
Why it's wrong here
Refactoring into microservices is a major architectural change, not minimal changes.
- ✓
Increase the size of the virtual machines and allocate more vCPUs.
Why this is correct
Scaling up provides more CPU and memory, which can improve performance for resource-intensive applications without requiring architectural changes.
- ✗
Move the application to a containerized environment using Docker.
Why it's wrong here
Containerization would require significant rework and might not be considered 'minimal changes'.
- ✗
Implement a content delivery network (CDN) to cache static assets.
Why it's wrong here
CDNs help with static content but do not address the overall performance of a legacy monolithic application that likely has dynamic content.
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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.