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Containers and Runtimes Questions

Practice questions for Containers and Runtimes topic in Kubernetes and Cloud Native Associate. 12 questions covering this domain.

12 questions6 easy3 medium3 hard
Q1
easy

Which of the following is a container runtime commonly used with Kubernetes?

Q2
medium

Why does Kubernetes use the Container Runtime Interface, or CRI?

Q3
easy

What is the primary role of a container registry in a cloud native workflow?

Q4
medium

A team migrating from Docker to a Kubernetes cluster needs to choose a container runtime. They want one designed specifically to implement Kubernetes ...

Q5
easy

Which low-level container runtime is responsible for actually creating and running containers by invoking Linux kernel features such as namespaces and...

Q6
hard

A security team wants to ensure that container images used in production are signed and that unsigned images are rejected at admission time. Which con...

Q7
medium

After upgrading to Kubernetes 1.24, a team is surprised that kubelet no longer manages CNI plugins for them. Which component responsibility should the...

Q8
easy

A node image is being prepared for Kubernetes networking. Besides the main plugin, which CNI plugin capability is explicitly required on every node?

Q9
hard

Pods using hostPort fail on a cluster where the base CNI networking works. Which plugin is commonly needed to support hostPort mappings?

Q10
hard

A security team expects identical NetworkPolicy behavior for Pods using hostNetwork across every plugin. What do the docs say?

Q11
easy

A runtime team is adding Kubernetes-compatible Pod networking. Which plugin model should they integrate with?

Q12
easy

A team applies several NetworkPolicies, but traffic behavior never changes in the cluster. What is the most likely explanation?

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