Network+ Study Guide by David Groth
Here's the book you need to prepare for the Network+ exam. This proven "Sybex Study Guide" provides: in-depth coverage of every exam domain - all the information you need; practical information on essential networking tasks; hundreds of challenging review questions, in the book and on the CD; leading-edge exam preparation software, including a custom testing engine and electronic flashcards; authoritative coverage of all Network+ exam domains: Media and topologies Protocols and standards Network implementation Network support.