Short for packet assembler/disassembler PAD is a device (hardware or software) used in packet switching to enable data terminal equipment (DTE) not equipped for packet switching to access a packet-switched network. PAD is a term most often associated with an X.25 network where the PAD breaks the data stream into individual packets and formats the packet headers for asynchronous transmission.
(1) Short for Phase Alternating Line, the dominant television standard in Europe. The United States uses a different standard, NTSC. Whereas NTSC delivers 525 lines of resolution at 60 half-frames per second, PAL delivers 625 lines at 50 half-frames per second. Many video adapters that enable computer monitors to be used as television screens support […]
(1) In all capitals, PAN is short for Personal Area Network. Based on the electric-field transmission medium, is an IBM technology that allows individuals to exchange data with a simple touch or grasp, such as a handshake. A PAN user is equipped with a receiver and a transmitter, which constantly sends infinitesimal data-carrying currents — […]
Short for Password Authentication Protocol, the most basic form of authentication, in which a user’s name and password are transmitted over a network and compared to a table of name-password pairs. Typically, the passwords stored in the table are encrypted. The Basic Authentication feature built into the HTTP protocol uses PAP. The main weakness of […]
The data transfer process (DTP) for FTP establishes and manages the data connection. The DTP can be passive or active. Passive, or PASV, is a command that requests that the server “listen” on a data port (which is not its default data port) and to wait for a connection rather than initiate one upon receipt […]
- Port Address Translation (PAT)
Short for port address translation, a type of network address translation. During PAT, each computer on LAN is translated to the same IP address, but with a different port number assignment. PAT is also referred to as overloading, port-level multiplexed NAT or single address NAT.