Short for Advanced Program-to-Program Communications. Also known as LU 6.2 and based on IBM’s SNA, APPC is a communication protocol that transaction programs in a distributed computing environment can use to talk to each other. Using APPC, interconnected systems can communicate and share the processing of programs. It consists of two interfaces: programming and data-exchange. The programming interface replies to requests from programs requiring communication; the data-exchange interface establishes sessions between programs.
APPC is an open standard and is supported on most platforms.
To compress a file using the ARC format. The ARC data compression format, created by Systems Enhancement Associates, is particularly popular among bulletin board systems (BBSs). Another common format is ZIP. Files that have been compressed with an ARC utility end with a.ARC extension. To decompress them, you need a utility called ARC-E (stands for […]
Short for Attached Resource Computer network, ARCnet is one of the oldest, simplest, and least expensive types of local-area network. ARCnet was introduced by Datapoint Corporation in 1977. It uses a token-ring architecture, supports data rates of 2.5 Mbps, and connects up to 255 computers. A special advantage of ARCnet is that it permits various […]
Acronym for the American Registry for Internet Numbers. ARIN, founded in 1997, is a non-profit organization that registers and administers IP numbers for North America, a portion of the Caribbean and sub-Saharan Africa. ARIN is one of four regional Internet registries.
- Address Resolution Protocol (ARP)
Short for Address Resolution Protocol, a network layer protocol used to convert an IP address into a physical address (called a DLC address), such as an Ethernet address. A host wishing to obtain a physical address broadcastsan ARP request onto the TCP/IP network. The host on the network that has the IP address in the […]
The precursor to the Internet, ARPANET was a large wide-area network created by the United States Defense Advanced Research Project Agency (ARPA). Established in 1969, ARPANET served as a testbed for new networking technologies, linking many universities and research centers. The first two nodes that formed the ARPANET were UCLA and the Stanford Research Institute, […]