KCNA Cloud Native Architecture Practice Question
A development team is designing a new microservices application to run on a Kubernetes cluster. They want to ensure that each microservice can be developed, deployed, and scaled independently. Which cloud native architecture principle are they primarily applying?
⚠ Common exam trap
Many candidates confuse 'statelessness' with 'loose coupling' because both enable scaling, but statelessness is about session data management, not the architectural independence of service development and deployment.
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
The principle of loose coupling ensures that each microservice can be developed, deployed, and scaled independently by minimizing dependencies between services. In Kubernetes, this is achieved through well-defined APIs and service boundaries, allowing teams to update or scale one service without affecting others. This directly supports the team's goal of independent lifecycle management for each microservice.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Loose coupling
Why this is correct
Loose coupling allows services to be developed, deployed, and scaled independently.
- ✗
Immutable infrastructure
Why it's wrong here
Immutable infrastructure means servers are never modified after deployment, not about service independence.
- ✗
Statelessness
Why it's wrong here
Statelessness refers to applications not storing state between requests, not to independent deployability.
- ✗
Service discovery
Why it's wrong here
Service discovery is a mechanism for finding service endpoints, not an architectural principle.
Go deeper
Related to this question
Learn chapter
Cloud Native Architecture and Concepts
Key term
ReplicaSet and Replication
A ReplicaSet ensures a specified number of identical pod instances are running at all times in Kubernetes, using replication to maintain availability and stability.
Key term
Microservices Architecture
Microservices architecture is a way of building software as a collection of small, independent services that each handle one specific business function and communicate over a network.
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