Another method of salt production used by Morton Salt is the evaporation of salt brine by steam heat in large commercial evaporators, called vacuum pans. This method yields a very high purity salt, fine in texture, and principally used in those applications requiring the highest quality salt.
And finally applications use TCP or UDP connections to exchange the data that makes up the application protocol: logging in to servers, requesting and transmitting Web pages, delivering e-mail, and so on.
The most widely known Application layer protocols are those used for the exchange of user information: 1  The Hypertext Transfer Protocol (HTTP) is used to transfer files that make up the Web pages of the World Wide Web. 2  The File Transfer Protocol (FTP) is used for interactive file transfer.