hardMultiple ChoiceObjective-mapped
CV0-004 Practice Question: Migrating a legacy monolithic application to a…
A company is migrating a legacy monolithic application to a microservices architecture on the cloud. The application has tight coupling and shared database schemas. Which migration strategy should the company adopt to reduce risk and enable iterative migration?
⚠ Common exam trap
Test-takers frequently confuse the strangler fig pattern with containerization or lift-and-shift, mistakenly believing that simply moving the monolith to containers or a managed service constitutes a migration strategy, when in fact those approaches do not break the tight coupling or enable iterative decomposition.
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
✓
Use the strangler fig pattern to gradually replace components
The strangler fig pattern is the correct migration strategy because it allows the company to incrementally replace specific functionalities of the legacy monolithic application with new microservices, reducing risk by keeping the existing system operational during the transition. This approach directly addresses the tight coupling and shared database schema issues by enabling gradual decomposition without requiring a complete rewrite or a risky big-bang migration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Re-platform to a managed service and rewrite later
Why it's wrong here
Does not address coupling.
- ✓
Use the strangler fig pattern to gradually replace components
Why this is correct
Allows iterative migration with risk reduction.
- ✗
Containerize the monolithic application and run it on a cluster
Why it's wrong here
Still a monolith.
- ✗
Lift and shift the entire application, then refactor in-place
Why it's wrong here
High risk of disruption.
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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.