EXAM CRAM: The CCNA Cram Sheet
This Cram Sheet contains key information as a final preparation tool for the CCNA exam. Review this information as the last thing you do before you enter the testing center, paying special attention to those areas in which you think that you need the most review. Enjoy this additional study aid!
Networking Fundamentals
The OSI and TCP/IP Models
OSI—the layers are Application, Presentation, Session, Transport, Network, Data Link, Physical; TCP/IP[md]the layers are Application, Transport, Internet, Network Interface.
The PDUs of the Bottom Four Layers
Segments, Packets, Frames, Bits
UDP is connectionless; UDP has very ...
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