What does the oc tag command do in OpenShift?

• A. It deploys a new application.
• B. It exposes a service publicly.
• C. It scales deployments.
• D. It creates or updates tags for images in an image stream, enabling promotion or versioning.

Answer: (D)

Tagging images in image streams to control versions and promotion across environments is what the oc tag command does. An image stream tracks images and their tags, so you can assign a specific image to a tag (for example, prod or v1.2). By tagging an image, you pin a particular image version for use by deployments or move that same image to a different environment’s tag as part of promotion. It’s about labeling and updating which image a tag points to, not about deploying, exposing services, or scaling workloads.