Berkeley CSUA MOTD:Entry 35597
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2025/07/08 [General] UID:1000 Activity:popular
7/8     

2005/1/8-9 [Computer/Networking] UID:35597 Activity:kinda low
1/7     Some literatures say the OSI is 7 layers while some say it's
        4 layers. What accounts the difference?
        \_ OSI is 7 layers, the older view networking was only 4
           layers: physical, mac, transport (tcp/ip), application.
           \- and then there is implementation reality/practice ...
              \_ yermom doesn't mind 3 layers, and accepts all out-of-band
                 traffic.