Which statement describes containerization?

Which statement describes containerization?

• A. Containers run multiple Linux kernels.
• B. Containers require full OS virtualization per app.
• C. Containers isolate applications and share the host OS kernel.
• D. Containers are identical to virtualization.

Answer: (C)

Containerization is about isolating applications in lightweight environments that share the host operating system kernel. Each container runs its own isolated processes, file system, and network space, but all containers use the same kernel as the host, making them more scalable and efficient than full virtual machines. This is why the statement that containers isolate applications and share the host OS kernel is the best description. The other ideas don’t fit because containers don’t run multiple kernels themselves; they use the host’s kernel. They don’t require full OS virtualization per application—there’s no separate OS boot for each container. And they aren’t identical to virtualization, which emulates hardware and runs separate OS instances for each virtual machine.

Containerization is about isolating applications in lightweight environments that share the host operating system kernel. Each container runs its own isolated processes, file system, and network space, but all containers use the same kernel as the host, making them more scalable and efficient than full virtual machines. This is why the statement that containers isolate applications and share the host OS kernel is the best description.

The other ideas don’t fit because containers don’t run multiple kernels themselves; they use the host’s kernel. They don’t require full OS virtualization per application—there’s no separate OS boot for each container. And they aren’t identical to virtualization, which emulates hardware and runs separate OS instances for each virtual machine.