Labels:text | screenshot | rectangle | line | parallel OCR: OPEN TRANSPORT ARCHITECTURE AppleTalk TCP/IP Transport independent application application application XTI STREAMS TCP/IP IPX memory DLPI Copland OS protected Built-in PCI Bus PCMCIA network network interface network Figure 2. Apple has pulled components from the Unix operating system and the X/Open Group to facilitate transport independence and to create a suite of standard APIs adaptable to multiple network technologies.