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TCP/IP First-Step Review by Ronald Yu

Great TCP/IP Intro text

Not at all as comprehensive as Stevens', by now authoritative 3 Vol set, but along with Kevin Burns' 'Troubleshooting TCP/IP', can provide a beginner with what TCP/IP is all about. Included are historical tidbits, and yes..it does have a 'for dummies and idiots' flavor to it (but no corny cartoons), so if that style offends you, then stick to Stevens.
But there is a point of confusion. In explaining subnetting addressing, he states more than once that the number of available host addresses are 2 to the power x, where x is the number of host bits, when its actually 2 less than that, because all zeroes are the network identifier and all ones are the broadcast signal. He does then make that distinction, not too assertively enough later on, but then continues to state that the number of available host addresses are 2 to the power x!!!!
I am not nitpicking, because little details like this can make or break you in CISCO certification or job interviews.

"Subnetting is one of the most important topics on the ICND1, ICND2, and CCNA exams. You need to know how it works and how to 'do the math' to figure out issues whensubnetting is in use, both in real life and on the exam." [1]

[1] Odom,W. CCENT/CCNA ICND1 official exam certification guide