The world of IT is always evolving, but in every area there are stable, coreconcepts that anyone just setting out needed to know last year, needs to knowthis year, and will still need to know next year. The purpose of theFoundations series is to identify these concepts and present them in a waythat gives you the strongest possible starting point, no matter what yourendeavor.
TCP/IP Foundations provides essential knowledge aboutthe two protocols that form the basis for the Internet, as well as many othernetworks. What you learn here will benefit you in the short term, as you acquireand practice your skills, and in the long term, as you use them. Topics coveredinclude:
The origins of TCP/IP and the Internet
Thelayers comprising the OSI and DoD models
Creating custom subnet masks
Supernetting and ClasslessInter-Domain Routing (CIDR)