A container is best described as?

A container is best described as?

• A. A Virtual Machine with its own kernel
• B. A process with isolated filesystem
• C. A physical server
• D. A network share

Answer: (B)

Containers provide an isolated runtime for applications by running as processes on the host OS, while keeping their own separate view of the filesystem. This isolation is achieved with namespaces and control groups, which separate the container’s process space, mount points, networking, and resources from other processes on the host. The key feature is the isolated filesystem, delivered from the container image and layered storage, so the container sees its own root filesystem independent of the host or other containers. This is why describing a container as a process with an isolated filesystem is the best fit. It’s not a virtual machine, which would run its own kernel and emulate hardware; containers share the host’s kernel. It’s also not a physical server or a network share, which imply hardware or file storage resources rather than an isolated application runtime.

Containers provide an isolated runtime for applications by running as processes on the host OS, while keeping their own separate view of the filesystem. This isolation is achieved with namespaces and control groups, which separate the container’s process space, mount points, networking, and resources from other processes on the host. The key feature is the isolated filesystem, delivered from the container image and layered storage, so the container sees its own root filesystem independent of the host or other containers.

This is why describing a container as a process with an isolated filesystem is the best fit. It’s not a virtual machine, which would run its own kernel and emulate hardware; containers share the host’s kernel. It’s also not a physical server or a network share, which imply hardware or file storage resources rather than an isolated application runtime.