Kubernetes and Cloud Native Associate (KCNA) — Question 121

Which of the following sentences is true about container runtimes in Kubernetes?

Answer options

• A. If you let iptables see bridged traffic, you don't need a container runtime.
• B. If you enable IPv4 forwarding, you don't need a container runtime.
• C. Container runtimes are deprecated, you must install CRI on each node
• D. You must install a container runtime on each node to run pods on it.

Correct answer: D

Explanation

The correct answer is D because a container runtime is essential for managing containerized applications and running pods in Kubernetes. Options A and B incorrectly suggest that certain network configurations can replace the need for a container runtime, which is not accurate. Option C misstates the status of container runtimes and incorrectly implies that CRI can substitute them.