KCNA Cloud Native Application Delivery Practice Question
Which TWO statements are true about Kubernetes Deployments?
⚠ Common exam trap
CNCF often tests the misconception that Deployments are suitable for stateful workloads or that they inherently expose applications externally, when in fact StatefulSets and Services are the correct components for those responsibilities.
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
✓
Deployments support rolling updates and rollbacks.
Deployments inherently support rolling updates and rollbacks through their declarative update strategy. When you change the pod template in a Deployment, it creates a new ReplicaSet and gradually scales it up while scaling down the old ReplicaSet, ensuring zero-downtime updates. If the update fails, you can roll back to a previous revision using `kubectl rollout undo`, which reverts the Deployment to a prior ReplicaSet state.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Deployments support rolling updates and rollbacks.
Why this is correct
Rolling updates and rollbacks are core features of Deployments.
- ✗
Deployments are the recommended controller for stateful applications.
Why it's wrong here
StatefulSets are recommended for stateful applications.
- ✓
A Deployment creates a ReplicaSet to ensure the desired number of pod replicas are running.
Why this is correct
Deployments manage ReplicaSets to maintain pod counts.
- ✗
Deployments can expose applications externally via a built-in load balancer.
Why it's wrong here
Services expose applications; Deployments do not provide external exposure.
- ✗
Deployments are used to run a pod on every node in the cluster.
Why it's wrong here
That is the role of a DaemonSet.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.