ATM (asynchronous transfer mode)

a communication switch that handles interface speeds ranging from 25 million to 622 million bps. it multiplexes data streams onto the same BN by using cell rely techniques.

ADSL (asymmetric DSL)

a data link layer technology that provides high sped communication over traditional telephone lines. a DSL modem is used to provide three channels: a traditional voice channel, an upstream channel for communication from the client to the ISP and a downstream channel for communicating from the ISP to the client.

ARQ (automtic repeat request)

a system employing an error detecting code o convinced that any error initiates a repetition of the transmission of the incorrectly received data or massage

ARPANET

one of the early packet switching networks, it was a predecessor of the internet

ARCnet

attached resource computing network. a proprietary token-bus LAN developed by the datapoint corporation.

ASP (Application Service Provider)

it develops an application system and companies purchase the service without ever installing the software on their computers. they simply use the service

apple talk

a set of communication protocols that defines networking for apple computers