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.
A development team wants to deploy a serverless function that scales to zero when not in use. Which CNCF project or platform is BEST suited for this requirement?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Kubeless
Why wrong: Kubeless is a serverless framework but is not a CNCF project.
AWS Lambda
Why wrong: AWS Lambda is a proprietary serverless platform, not a CNCF project.
Knative
Knative is a CNCF incubating project that provides serverless capabilities on Kubernetes, including scaling to zero.
OpenFaaS
Why wrong: OpenFaaS is a serverless framework but not a CNCF project; it is a separate open-source project.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Knative
Knative is a Kubernetes-based platform to build, deploy, and manage serverless workloads that can scale to zero. AWS Lambda is a proprietary offering, not CNCF. OpenFaaS and Kubeless are also serverless frameworks but Knative is the most prominent CNCF serverless project.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Kubeless
Why it's wrong here
Kubeless is a serverless framework but is not a CNCF project.
AWS Lambda
Why it's wrong here
AWS Lambda is a proprietary serverless platform, not a CNCF project.
Knative
Why this is correct
Knative is a CNCF incubating project that provides serverless capabilities on Kubernetes, including scaling to zero.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
OpenFaaS
Why it's wrong here
OpenFaaS is a serverless framework but not a CNCF project; it is a separate open-source project.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
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.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related KCNA NAT questions on configuration and troubleshooting.
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FAQ
Cloud Native Architecture — This question tests Cloud Native Architecture — Static NAT maps one inside address to one outside address..
The correct answer is: Knative — Knative is a Kubernetes-based platform to build, deploy, and manage serverless workloads that can scale to zero. AWS Lambda is a proprietary offering, not CNCF. OpenFaaS and Kubeless are also serverless frameworks but Knative is the most prominent CNCF serverless project.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related KCNA NAT questions on configuration and troubleshooting.
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 21, 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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