This KCNA practice question tests your understanding of cloud native architecture. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 key principles of cloud native architecture?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Infrastructure automation
Infrastructure automation (B) is a key principle of cloud native architecture because it enables consistent, repeatable, and error-free provisioning and management of infrastructure through code (e.g., Terraform, AWS CloudFormation, Ansible). This aligns with the cloud native goal of reducing manual toil and enabling rapid, reliable deployments. Microservices (C) is also a core principle, as it structures applications as a collection of loosely coupled, independently deployable services that can be scaled and updated individually, which is fundamental to cloud native agility and resilience.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Immutable infrastructure
Why it's wrong here
While related, immutable infrastructure is a practice, not a core principle of cloud native architecture.
✓
Infrastructure automation
Why this is correct
Automation is essential for managing dynamic cloud environments.
Related concept
Read the scenario before looking for a memorised answer.
✓
Microservices
Why this is correct
Microservices enable independent deployment and scaling, a core cloud native principle.
Related concept
Read the scenario before looking for a memorised answer.
✗
Monolithic design
Why it's wrong here
Monolithic design is contrary to cloud native's modular approach.
✗
Manual scaling
Why it's wrong here
Manual scaling is not automated or resilient, unlike cloud native practices.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the distinction between 'key principles' (like microservices and automation) and 'operational patterns' (like immutable infrastructure), leading candidates to select immutable infrastructure as a principle when it is actually a best practice derived from those principles.
Detailed technical explanation
How to think about this question
In practice, infrastructure automation is often implemented using Infrastructure as Code (IaC) tools like Terraform, which use declarative configuration files (HCL) to manage cloud resources via provider APIs, ensuring idempotency and version control. Microservices communicate over lightweight protocols such as HTTP/REST or gRPC, and each service typically owns its own data store (database-per-service pattern) to avoid tight coupling. A real-world scenario where this matters is a large e-commerce platform: during a flash sale, automated scaling can spin up hundreds of microservice instances in seconds, while immutable infrastructure ensures that each new instance is identical and free of configuration drift.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this KCNA question in full detail.
Cloud Native Architecture — This question tests Cloud Native Architecture — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Infrastructure automation — Infrastructure automation (B) is a key principle of cloud native architecture because it enables consistent, repeatable, and error-free provisioning and management of infrastructure through code (e.g., Terraform, AWS CloudFormation, Ansible). This aligns with the cloud native goal of reducing manual toil and enabling rapid, reliable deployments. Microservices (C) is also a core principle, as it structures applications as a collection of loosely coupled, independently deployable services that can be scaled and updated individually, which is fundamental to cloud native agility and resilience.
What should I do if I get this KCNA question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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