This KCNA practice question tests your understanding of container orchestration. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are characteristics of a microservices architecture? (Select 2)
Independent deployment of services
Each microservice can be deployed independently.
Tight coupling between services
Why wrong: Microservices are loosely coupled.
Loose coupling between services
Microservices communicate via APIs and are loosely coupled.
Monolithic codebase
Why wrong: Microservices decompose into smaller services.
Shared database for all services
Why wrong: Microservices often have their own databases.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Independent deployment of services
Option A is correct because microservices architecture is designed to allow each service to be developed, tested, and deployed independently without affecting other services. This independence is achieved through well-defined APIs and versioning strategies, enabling continuous delivery and rapid iteration. In Kubernetes, for example, each microservice can be packaged as a separate container and deployed via its own Deployment resource, allowing updates to one service without downtime for the entire application.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Independent deployment of services
Why this is correct
Each microservice can be deployed independently.
Related concept
Read the scenario before looking for a memorised answer.
Tight coupling between services
Why it's wrong here
Microservices are loosely coupled.
Loose coupling between services
Why this is correct
Microservices communicate via APIs and are loosely coupled.
Related concept
Read the scenario before looking for a memorised answer.
Monolithic codebase
Why it's wrong here
Microservices decompose into smaller services.
Shared database for all services
Why it's wrong here
Microservices often have their own databases.
Common exam traps
CNCF often tests the misconception that microservices require a shared database for consistency, but the correct pattern is database-per-service to maintain loose coupling and independent scalability.
Detailed technical explanation
Under the hood, microservices communicate via lightweight protocols such as HTTP/REST, gRPC, or asynchronous messaging (e.g., Kafka, RabbitMQ). The loose coupling is enforced by each service exposing a bounded context with its own data store, often using event-driven patterns to propagate state changes. In a real-world Kubernetes scenario, a failure in one service's database does not cascade to others because each service has its own persistent volume claim and database instance, ensuring fault isolation.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the KCNA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Container Orchestration — This question tests Container Orchestration — Read the scenario before looking for a memorised answer..
The correct answer is: Independent deployment of services — Option A is correct because microservices architecture is designed to allow each service to be developed, tested, and deployed independently without affecting other services. This independence is achieved through well-defined APIs and versioning strategies, enabling continuous delivery and rapid iteration. In Kubernetes, for example, each microservice can be packaged as a separate container and deployed via its own Deployment resource, allowing updates to one service without downtime for the entire application.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This KCNA practice question is part of Courseiva's free CNCF 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 KCNA exam.
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