KCNA Container Orchestration Practice Question
Which of the following is a key principle of microservices architecture?
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
✓
Loose coupling and independent deployability
Microservices architecture emphasizes breaking an application into small, independently deployable services that communicate over well-defined APIs. The correct answer is C: Loose coupling and independent deployability are key principles. Option A (shared database) contradicts the principle of service autonomy. Option B (tight coupling) is the opposite of what microservices aim for. Option D (monolithic codebase) is what microservices avoid.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Shared database schema for all services
Why it's wrong here
Microservices often use database-per-service pattern to avoid tight coupling.
- ✗
Tight coupling between services
Why it's wrong here
Microservices aim for loose coupling, not tight coupling.
- ✓
Loose coupling and independent deployability
Why this is correct
Each microservice can be deployed, scaled, and updated independently.
- ✗
Building a large, monolithic codebase
Why it's wrong here
Monolithic architecture is the opposite of microservices.
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