Introduction
Welcome to CCNA Routing and Switching Portable Command Guide! The success of the previous editions of this book prompted Cisco Press to approach me with a request to update the book with the necessary new content to help both students and IT professionals in the field study and prepare for the CCNA Routing and Switching exam. For someone who originally thought that this book would be less than 100 pages in length and limited to the Cisco Networking Academy program for its complete audience, I am continually amazed that my little engineering journal has caught on with such a wide range of people throughout the IT community.
I have long been a fan of what I call the “engineering journal,” a small notebook that can be carried around ...
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