Which feature identifies the resource on the web?

• A. A URL that identifies the resource
• B. A numeric ID
• C. A hash value
• D. A version number

Answer: (A)

The URL is the web address that uniquely locates and retrieves the resource. On the web, requests are sent to a specific URL to access a resource, making it globally identifiable and accessible via HTTP. A numeric ID may identify a resource inside a particular system but isn’t a universal web address. A hash value can be used for integrity or content-addressing in some contexts, but it doesn’t serve as the standard web locator. A version number indicates a particular revision, not the resource’s identity or location. So the URL best identifies the resource on the web.