http://www.amazon.com/Cisco-Essentials-Press-Networking-Technology/dp/1587050412 http://www.amazon.com/Cisco-Essentials-Press-Networking-Tech... (Networking) ht

http://www.amazon.com/Cisco-Essentials-Press-Networking-Technology/dp/1587050412 http://www.amazon.com/Cisco-Essentials-Press-Networking-Tech... (Networking) http://www.amazon.com/DNS-BIND-5th-Cricket-Liu/dp/0596100574 http://www.amazon.com/DNS-BIND-5th-Cricket-Liu/dp/0596100574 (DNS) There are always the standards texts, Computer Networks by Tannenbaum and Internetworking by Radia Perlman for the theory.