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CCNA Routing and Switching 200-125 Exam Cram, Fifth Edition by Anthony Sequeira

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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

Image

UDP is connectionless; UDP has very ...

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