Which URL type does NOT require a protocol prefix like http or https?

A relative URL does not require a protocol prefix such as http or https because it is used to link to a resource within the same website or directory without providing the full path. It assumes the protocol and domain based on the context of the page from which it is being called.

For example, if you are navigating a website and want to link to another page within the same site, you can simply use a relative URL like "/about" instead of the full absolute URL "http://www.example.com/about". This makes relative URLs particularly useful for internal links, as they are shorter and easier to manage, especially when moving resources between environments such as local development and production.

In contrast, absolute URLs specify the complete path to a resource, including the protocol, domain name, and the specific file path. Dynamic URLs and static URLs may also include protocol prefixes when used in absolute form, but they refer to the type of content and how it's served rather than the presence of a protocol in the URL itself.