functions into manageable, self-contained, functional layers. The layers are, from top to bottom, Application, Presentation,
Session, Transport, Network, Data Link and Physical.
PCL
Printer Command Language (PCL) is a Page Description Language (PDL) developed by HP as a printer protocol and has
become an industry standard. Originally developed for early inkjet printers, PCL has been released in varying levels for
thermal, dot matrix printer, and laser printers.
PDF
Portable Document Format (PDF) is a proprietary le format developed by Adobe Systems for representing two dimensional
documents in a device independent and resolution independent format.
PostScript
PostScript (PS) is a page description language and programming language used primarily in the electronic and desktop
publishing areas. - that is run in an interpreter to generate an image.
PPM
Pages Per Minute (PPM) is a method of measurement for determining how fast a printer works, meaning the number of
pages a printer can produce in one minute.
Print Media
The media like paper, labels, and transparencies which can be used in a printer, a scanner, a fax or, a copier.
Printer Driver
A program used to send commands and transfer data from the computer to the printer.
PRN le
An interface for a device driver, this allows software to interact with the device driver using standard input/output system
calls, which simplies many tasks.
Protocol
A convention or standard that controls or enables the connection, communication, and data transfer between two
computing endpoints.
RADIUS
Remote Authentication Dial In User Service (RADIUS) is a protocol for remote user authentication and accounting. RADIUS
enables centralized management of authentication data such as usernames and passwords using an AAA (authentication,
authorization, and accounting) concept to manage network access.
Resolution
The sharpness of an image, measured in Dots Per Inch (DPI). The higher the dpi, the greater the resolution.
SMB
Server Message Block (SMB) is a network protocol mainly applied to share les, printers, serial ports, and miscellaneous
communications between nodes on a network. It also provides an authenticated Inter-process communication mechanism.
SMTP
Simple Mail Transfer Protocol (SMTP) is the standard for e-mail transmissions across the Internet. SMTP is a relatively
simple, text-based protocol, where one or more recipients of a message are specied, and then the message text is
transferred. It is a client-server protocol, where the client transmits an email message to the server.
SSID
Service Set Identier (SSID) is a name of a wireless local area network (WLAN). All wireless devices in a WLAN use the same
SSID in order to communicate with each other. The SSIDs are case-sensitive and have a maximum length of 32 characters.
Subnet Mask
The subnet mask is used in conjunction with the network address to determine which part of the address is the network
address and which part is the host address.
ENWW Glossary 183
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