Answer 1
Actually, they all are part of a URL. The full syntax of a URL is: protocol://username:password@host:port/path;parameters/... .../path;parameters?query#fragment

The parameters are separated lists of name value pairs. Note that each element within the path can have one more parameter associated with it.

The query, if present, has no required syntax, but is most commonly a separated list of name value pairs.

The host can be specified either as a numeric IP address (e.g., a 32-bit integer or using dotted-octet notation) or as a domain name that must be translated (by the client) to an IP address using a DNS server.

Contributor: Dave Tweed

Published February 2003