Containers and Runtimes Questions
Practice questions for Containers and Runtimes topic in Kubernetes and Cloud Native Associate. 24 questions covering this domain.
Which of the following is a container runtime commonly used with Kubernetes?
Why does Kubernetes use the Container Runtime Interface, or CRI?
What is the primary role of a container registry in a cloud native workflow?
A team migrating from Docker to a Kubernetes cluster needs to choose a container runtime. They want one designed specifically to implement Kubernetes ...
Which low-level container runtime is responsible for actually creating and running containers by invoking Linux kernel features such as namespaces and...
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...
After upgrading to Kubernetes 1.24, a team is surprised that kubelet no longer manages CNI plugins for them. Which component responsibility should the...
A node image is being prepared for Kubernetes networking. Besides the main plugin, which CNI plugin capability is explicitly required on every node?
Pods using hostPort fail on a cluster where the base CNI networking works. Which plugin is commonly needed to support hostPort mappings?
A security team expects identical NetworkPolicy behavior for Pods using hostNetwork across every plugin. What do the docs say?
A runtime team is adding Kubernetes-compatible Pod networking. Which plugin model should they integrate with?
A team applies several NetworkPolicies, but traffic behavior never changes in the cluster. What is the most likely explanation?
Which OCI specification defines the configuration, execution environment, and lifecycle of a container?
Which of the following correctly describes the relationship between OCI Image Spec, OCI Runtime Spec, and a container runtime like containerd?
A container image follows the OCI Image Spec but is stored in a registry. When a kubelet pulls and runs this image, which component interprets the ima...
A containerized application needs to read container runtime metrics (e.g., memory usage). The container runtime is containerd. Which interface or file...
A Kubernetes cluster uses containerd as the container runtime. Which lower-level component does containerd delegate to for actually creating and runni...
Which of the following is a role of the Container Runtime Interface (CRI) in Kubernetes?
A platform team plans to replace containerd with CRI-O on worker nodes but wants Kubernetes manifests and kubelet behavior to remain the same. What ma...
A container repeatedly hits its memory limit even though the node still has free RAM. Which Linux mechanism actually enforces the container's resource...
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