This guide fills the need for a single, compact volume that combines information on cutting-edge technologies with older material, such as coverage of venerable networking protocols like TCP/IP and classic networking theory. A 40-page visual Troubleshooting Flowchart section helps readers narrow and isolate likely causes to common problems.

Now in its fourth edition, this industry classic networking reference gives readers real world, in-depth explanations of confusing networking architectures and protocols, and helps them track down and repair costly networking problems.

Upgrading and Repairing Networks, Fifth Edition is the definitive guide for anyone with a network, from home networking enthusiasts to professional network administrators. The book explains network architectures and protocols using plain English and real-world examples, and gives valuable insight for fixing network problems. This updated edition includes the latest on network planning and design, and building a network using wired, wireless, or both technologies. It covers the latest updates in Windows XP Service Pack 2, as well as Gigabit Ethernet, virtual LANs, Bluetooth, WAP, security, firewalls, and VPN use.

Over the years, thousands of tools have been developed for debugging TCP/IP networks. They range from very specialized tools that do one particular task, to generalized suites that do just about everything except replace bad Ethernet cables. Even better, many of them are absolutely free. There's only one problem: who has time to track them all down, sort through them for the best ones for a particular purpose, or figure out how to use them?Network Troubleshooting Tools does the work for you--by describing the best of the freely available tools for debugging and troubleshooting. You can start with a lesser-known version of ping that diagnoses connectivity problems, or take on a much more comprehensive program like MRTG for graphing traffic through network interfaces. There's tkined for mapping and automatically monitoring networks, and Ethereal for capturing packets and debugging low-level problems.This book isn't just about the tools available for troubleshooting common network problems. It also outlines a systematic approach to network troubleshooting: how to document your network so you know how it behaves under normal conditions, and how to think about problems when they arise, so you can solve them more effectively.The topics covered in this book include: Understanding your network Connectivity testing Evaluating the path between two network nodes Tools for capturing packets Tools for network discovery and mapping Tools for working with SNMP Performance monitoring Testing application layer protocols Software sources If you're involved with network operations, this book will save you time, money, and needless experimentation.

This package helps readers sort through modern flashy technologies so they can figure out which ones are worth the trouble. It also gives advice on keeping network performance at the lowest possible cost, and includes a CD-ROM containing QuickMail Pro Server, an e-mail server, and Artisoft iShare.

Updated and revised with eighty percent new material, this book is 100 percent of what readers need to upgrade, fix, or troubleshoot PCs Sixty-five percent of U.S. households own a PC; this book caters to the do-it-yourselfers in these households, both novices and tech hobbyists alike, who are looking for an approachable reference A one-stop reference for topics such as video, CD, and DVD; multimedia; storage; communications (network and Internet); peripherals; and integrating with laptops and handhelds Concludes with a step-by-step tutorial on building an "extreme" machine that can handle the most demanding multimedia or gaming applications Written by Marcia and Barry Press, authors of PC Toys (076454229X)

The bestselling CWNA study guide, updated for the latest exam The CWNA: Certified Wireless Network Administrator Study Guide is the ultimate preparation resource for the CWNA exam. Fully updated to align with the latest version of the exam, this book features expert coverage of all exam objectives to help you internalize essential information. A pre-assessment test reveals what you already know, allowing you to focus your study time on areas in need of review, while hands-on exercises allow you to practice applying CWNA concepts to real-world scenarios. Expert-led discussion breaks complex topics down into easily-digestible chucks to facilitate clearer understanding, and chapter review questions help you gauge your progress along the way. You also get a year of free access to the Sybex online interactive learning environment, which features additional resources and study aids including bonus practice exam questions. The CWNA exam tests your knowledge of regulations and standards, protocols and devices, network implementation, security, and RF site surveying. Thorough preparation gives you your best chance of passing, and this book covers it all with a practical focus that translates to real on-the-job skills. Study 100% of the objectives for Exam CWNA-107 Assess your practical skills with hands-on exercises Test your understanding with challenging chapter tests Access digital flashcards, white papers, bonus practice exams, and more The CWNA certification is a de facto standard for anyone working with wireless technology. It shows employers that you have demonstrated competence in critical areas, and have the knowledge and skills to perform essential duties that keep their wireless technology functioning and safe. The CWNA: Certified Wireless Network Administrator Study Guide gives you everything you need to pass the exam with flying colors.

From the #1 author in PC hardware Stephen Bigelow comes the most detailed and comprehensive networking reference available. Covering all networking essentials, architecture, protocols, cabling, firewalls, and much more --this is a must-have for every networking professional.

Text covers supporting and maintaining heterogeneous networking environments. Includes coverage of troubleshooting peer-to-peer and server-based networks, as well as hardware and transport layer problems.