CertiGuide to Network+  9  Glossary

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Point-to-Point Protocol (PPP)

An industry standard suite of protocols for the use of point-to-point links to transport multiprotocol datagrams. PPP is documented in RFC 1661.

A tunneling protocol that encapsulates Point-to-Point Protocol (PPP) frames into IP datagrams for transmission over an IP-based internetwork, such as the Internet or a private intranet.

An Internet protocol for receiving email. Port 110.

Hardware. I/O location. I.E. Serial port. 2. Software. A memory location which does vary from O/S to O/S, and is agreed to be a common standard. Port 80 is WWW/HTTP, and a web-enabled telephone can see HTTP as well as a PC can. Same port #, clearly different memory addresses.

An IEEE (Institute of Electrical and Electronics Engineers) standard that defines a set of operating-system services. Programs that adhere to the POSIX standard can be easily ported from one system to another. POSIX was based on UNIX system services, but it was created in a way that allows it to be implemented by other operating systems.

A page-description language (PDL) developed by Adobe Systems for printing with laser printers. PostScript offers flexible font capability and high-quality graphics. It is the standard for desktop publishing because it is supported by imagesetters, the high-resolution printers used by printing services for commercial typesetting.

The original voice grade wiring installed by the phone companies.

A set of routines stored in read-only memory (ROM) that tests various system components such as RAM, the disk drives, and the keyboard, to see if they are properly connected and operating. If problems are found, these routines alert the user with a series of beeps or a message, often accompanied by a diagnostic numeric value. If the POST is successful, it passes control to the bootstrap loader.

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