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Cisco 640-802 CCNA Portable Command Guide

Article By: benshaoxw
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Welcome to CCNA! Recently Cisco Press came to me and told me, albeit very quietly, that
there was going to be some changes made to the CCNA certification exam, and asked
whether I would be interested in updating my CCNA Portable Command Guidefor release
around the time of the announcement of the new exam. I was already working on the various
command guides for the new CCNP certification exams, but I felt that a revision wouldn’t
take a lot of time, as hopefully there would still be a lot of concepts that hadn’t changed.


Submitted:Jan 15, 2009    Reads: 179    Comments: 0    Likes: 0   


Introduction
Welcome to CCNA! Recently Cisco Press came to me and told me, albeit very quietly, that
there was going to be some changes made to the CCNA certification exam, and asked
whether I would be interested in updating my CCNA Portable Command Guidefor release
around the time of the announcement of the new exam. I was already working on the various
command guides for the new CCNP certification exams, but I felt that a revision wouldn't
take a lot of time, as hopefully there would still be a lot of concepts that hadn't changed.
I have long been a fan of what I call the "Engineering Journal"-a small notebook that can
be carried around and that contains little nuggets of information-commands that you
forget, the IP addressing scheme of some remote part of the network, little reminders about
how to do something you only have to do once or twice a year (but is vital to the integrity
and maintenance of your network). This journal has been a constant companion by my side
for the past eight years; I only teach some of these concepts every second or third year, so
I constantly need to refresh commands and concepts and learn new commands and ideas as
they are released by Cisco. My journals were the best way for me to review because they
were written in my own words-words that I could understand. At least, I had better
understand them, because if I didn't, I had only myself to blame.
The journals that I would create for my Academy classes would always be different from
the journals I would create when I was teaching from a different curriculum or if I was out
in the industry working on some production network. I could understand that the Academy
needed to split topics into smaller, more manageable chunks, but for me out in the real
world, I needed these concepts to follow a different approach-I needed all the routing
protocols together in one place in my journals, and not spread across some two-year outline
of knowledge.
This book is my "Industry" edition of the Engineering Journal. It contains a different logical
flow to the topics, one more suited to someone working in the field. Like topics are grouped
together: routing protocols, switches, troubleshooting. More-complex examples are given.
New topics have been added, such as IPv6, wireless, and the Security Device Manager
(SDM). The popular "Create Your Own Journal" appendix is still here-blank pages for
you to add in your own commands that you need in your specific job. We all recognize the
fact that no network administrator's job can be so easily pigeonholed as to being just
working with CCNA topics-you all have your own specific jobs and duties assigned to
you. That is why you will find those blank pages at the end of the book-make this book
your own; personalize it with what you need to make it more effective. That way your
journal will not look like mine.
640-802:Cisco Certified Network Associate(CCNA)





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