Kubernetes Container Orchestration Pod Management 3

Question 1

What is an init container and when does it run relative to app containers?

Accepted Answer

A container that runs to completion before app containers start

Answer

Init containers run sequentially to completion before any app containers in the Pod start, making them ideal for setup tasks.

Question 2

A Pod has multiple containers. Which command executes a command in a specific container?

Accepted Answer

kubectl exec --container= --

Answer

The --container (or -c) flag specifies which container inside a multi-container Pod to target with kubectl exec.

Question 3

What is the effect of setting `imagePullPolicy: Never` on a container?

Accepted Answer

Kubernetes only uses an image already present on the node and never pulls from a registry

Answer

imagePullPolicy: Never forces Kubernetes to use only locally cached images, causing the Pod to fail if the image is not already on the node.

Question 4

Which Pod phase indicates that all containers have terminated successfully?

Accepted Answer

Succeeded

Answer

The Succeeded phase means all containers in the Pod have exited with a zero exit code and will not be restarted.

Question 5

What is the role of a `sidecar container` in a Pod?

Accepted Answer

It runs alongside the main container to provide supporting functionality like logging or proxying

Answer

Sidecar containers share the same network namespace and volumes as the main container, extending its capabilities without modifying its image.

Kubernetes Container Orchestration Practice Test