- A
Kubeless
Why wrong: Kubeless is an open-source serverless framework that runs on Kubernetes and can scale to zero, but it is not a CNCF project.
- B
AWS Lambda
Why wrong: AWS Lambda is a proprietary serverless platform from Amazon and is not a CNCF project.
- C
Knative
Knative is a Kubernetes-based platform for building, deploying, and managing serverless workloads that can scale to zero, and it is a CNCF project.
- D
OpenFaaS
Why wrong: OpenFaaS is a CNCF sandbox project that can scale to zero, but Knative is the more prominent and integrated CNCF serverless project for Kubernetes.
Question 829 of 997
Scaling Serverless Functions to Zero with Knative
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?
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
✓
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: 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.
- ✗
Kubeless
Why it's wrong here
Kubeless is an open-source serverless framework that runs on Kubernetes and can scale to zero, but it is not a CNCF project.
- ✗
AWS Lambda
Why it's wrong here
AWS Lambda is a proprietary serverless platform from Amazon and is not a CNCF project.
- ✓
Knative
Why this is correct
Knative is a Kubernetes-based platform for building, deploying, and managing serverless workloads that can scale to zero, and it is a CNCF project.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
OpenFaaS
Why it's wrong here
OpenFaaS is a CNCF sandbox project that can scale to zero, but Knative is the more prominent and integrated CNCF serverless project for Kubernetes.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 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.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
What to study next
Got this wrong? Here's your next step.
Identify which KCNA exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
- →
Cloud Native Architecture — study guide chapter
Learn the concepts, then practise the questions
- →
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Targeted practice on this topic area only
- →
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- →
Kubernetes and Cloud Native Associate KCNA study guide
Full concept coverage aligned to exam objectives
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KCNA practice test guide
How to use practice tests most effectively before exam day
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FAQ
Questions learners often ask
What does this KCNA question test?
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: 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.
What should I do if I get this KCNA question wrong?
Identify which KCNA exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on KCNA
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A developer wants to deploy a function that reacts to image upload events in a cloud storage bucket. The function should scale to zero when idle. Which architecture best fits this use case?
medium- A.Use a long-running virtual machine to process events
- B.Deploy a container on Kubernetes with HorizontalPodAutoscaler set to minReplicas 0
- ✓ C.Implement a serverless function using a FaaS platform like AWS Lambda
- D.Use a Kubernetes Job triggered by a CronJob
Why C: FaaS (Function-as-a-Service) platforms like AWS Lambda are event-driven and can scale to zero when idle, making them ideal for sporadic event-triggered workloads.
Keep practising
More KCNA practice questions
- Which CNCF project provides a graduated service mesh implementation that includes features like traffic management, secu…
- A pod in the 'production' namespace is in a CrashLoopBackOff state. The pod has been running successfully for several da…
- You need to ensure that a pod runs on a node with SSD storage. How can you achieve this?
- Match each Kubernetes resource to its primary purpose.
- Match each Kubernetes security concept to its definition.
- Which three of the following are valid methods to create or update resources in Kubernetes? (Choose three.)
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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