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Macintosh Picture Format  |  1993-12-08  |  12.2 KB  |  640x480  |  8-bit (37 colors)  |  [PICT/ppxi]
   ocr: PDNS Switching Technologies Circuit Switching - For example, POTS, ISDN Fixed-speed, dedicated-channel End-to-end circuit established Packet Switching For example, X.25 Connection made over Virtual Circuit Many simultaneous logical connection Wide Area Networking Fechlarationgf Sndependence