What is a container registry?

What is a container registry?

• A. A registry is a version control system for code
• B. A service for hosting and distributing container images
• C. A database for storing image metadata
• D. A network proxy for registry access

Answer: (B)

A container registry is a service that hosts and distributes container images. It provides a centralized place to store built images, so you can push images from your CI/CD pipeline and pull them to any environment where containers run, such as a Kubernetes cluster. Registries also help manage image versions through tags and digests, control access with authentication and authorization, and often offer security features like image scanning and signing. This makes deployments scalable and repeatable, instead of trying to move images manually. The other descriptions don’t fit as well: a version control system stores source code rather than binary container images; a database stores structured data but isn’t the primary place to store and distribute container images; a network proxy may cache or route requests but doesn’t serve as the repository that stores and distributes the images themselves.

A container registry is a service that hosts and distributes container images. It provides a centralized place to store built images, so you can push images from your CI/CD pipeline and pull them to any environment where containers run, such as a Kubernetes cluster. Registries also help manage image versions through tags and digests, control access with authentication and authorization, and often offer security features like image scanning and signing. This makes deployments scalable and repeatable, instead of trying to move images manually.

The other descriptions don’t fit as well: a version control system stores source code rather than binary container images; a database stores structured data but isn’t the primary place to store and distribute container images; a network proxy may cache or route requests but doesn’t serve as the repository that stores and distributes the images themselves.