Which statement best describes a container image?

Which statement best describes a container image?

• A. It is a temporary log file created during container execution
• B. It is a run-time configuration file
• C. It is a cached layer of an image
• D. It is a portable self-contained bundle of software and dependencies

Answer: (D)

A container image is a portable, self-contained bundle of software and dependencies. It packages the application code, runtime, libraries, and any other required components so the same image can run consistently on any host with a container engine. This portability and self-containment are what make images distinct from ephemeral runtime logs, simple configuration files, or individual cached layers. Logs are generated during execution and are not the image itself. A run-time configuration file may influence how a container runs, but it isn’t the image that’s distributed and used to start the container. A cached layer is part of how images are stored and built, but the image is more than a single layer—it’s the complete bundle assembled from multiple layers plus metadata.

A container image is a portable, self-contained bundle of software and dependencies. It packages the application code, runtime, libraries, and any other required components so the same image can run consistently on any host with a container engine. This portability and self-containment are what make images distinct from ephemeral runtime logs, simple configuration files, or individual cached layers.

Logs are generated during execution and are not the image itself. A run-time configuration file may influence how a container runs, but it isn’t the image that’s distributed and used to start the container. A cached layer is part of how images are stored and built, but the image is more than a single layer—it’s the complete bundle assembled from multiple layers plus metadata.