CIT101 (Layers)
Last edited January 22, 2009
More by KHobbits »
Sections:
Cisco Links 
cisco.sunderland.ac.uk
Cisco Netacad
WebCT
Layer Models

OSI Layer model artical: http://en.wikipedia.org/wiki/OSI_model
TCP/IP layer artical: http://en.wikipedia.org/wiki/TCP/IP_reference_model
UDP Encapsulation image
 PDU       OSI           Protocol                      Devices
       /  7 Application  Email, Ping, TELNET, HTTP, FTP
Data  {-  6 Presentation ASCII, MP3, HTML
       \  5 Session      Port Numbers
Segments  4 Transport    TCP, UDP
Packets   3 Network      IP, IPX, Appletalk             Router
Frames    2 Data Link    Ethernet, Token Ring, FDDI     NIC, Switch, Bridge
Binary    1 Physical     RJ45, BNC                      Hub, Repeater
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