Cheat Sheet for Cisco Certified Network Associate Study Guide to Exam 640-507 (2nd Ed.)
originally by Todd Lammle, published by Sybex; condensed May 2001 by Robert S. with gratitude to Shankar
“Good artists copy. Great artists steal.” – Pablo Picasso
The best way to study something is to regurgitate it in one’s own words. When
I studied CCNA, I wrote this thing. I reduced 700 pages to a fourteen-page
booklet so I could carry it around, reviewing everywhere I went.
This document is color-coded, with all the IOS commands in violet arial narrow,
for example. As I realize the minimal benefits of color when one prints on black
and white laser printers, I’ve tried to be sensible about my choices. I still suggest
you print it in color, if possible. (Word Viewer wrongly italicizes my commands.)
In each chapter, Todd Lammle lists key terms with which you should be
familiar before the exam. I haven’t tried to define every term but I have written
them in blue, underlined in squiggles, so look at each and ask, “Can I define this?”
An easier color code to spot is my grey shading. This indicates stuff Lammle,
instructors, and some unreliable friends have told me is not likely to be on the
exam. Reading it might help your understanding but don’t sweat memorizing it.
Wiggly red lines to either side show text I’ve been strongly warned to study.
I’m more careful than Lammle to show correct prompts – I didn’t want to waste
space repeating config t and int s0 – so it’s up to you to notice the mode we’re in.
I try to avoid repeating myself, so you might have to read the whole booklet to
find a definition you need. When I introduce terms, I often show them in bold
face type (but, then, I use bold face type for a lot of things).
To save space, I use the following conventions:
- I refer to OSI layers as “L2,” “L3,” &c., instead of “data-link” and “network.”
- When I bother to show IOS prompts, I leave off the router names.
- I shorten bandwidth to BW, virtual circuit to VC, confi