UNIX work stations

The next level is the protocol that governs how the data are transmitted over the wire. Many protocols are ia use. A typical iastaHatioa may have multiple protocols mnning simultaneously on the same physical network. Vendors of network hardware and software develop protocols that are optimized for the type of appHcation for which their product is targeted. Among the protocols commonly seen ia a prepress aetwork are Apple Computer s AppleTalk and EtherTalk, and TCP/IP used by many UNIX work station vendors. The appHcation software a user employs automatically uses whatever protocol is necessary to move information over the network. 

Computer platforms where 1 represents IBM PCs and compatibles, 386 or better 2, Unix-based work stations (or equivalent) including HP/ApoUo, SUN, and IBM RS6000 3, DEC VMS 4, IBM mainframe, MVS or VM, or compatible and 5, others including Cray, Data Gen., etc. 

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