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Rating: 
Summary: A really useful and handy reference book.
Review: Having reviewed over 800 technical books over the past 5 years, and having with in the computer industry for over 14 years with 8 of those years dealing with networking, I thought I had a very good understanding of networking and networking concepts, After reading this book and taking the test in the back I found there is always something new to learn. This book is not for one specific exam but rather it can be used for the A+, Network+, Server+ and several ETA exams. The author has made certain that the information is not only accurate but up to date with the current technology. Covering topics like topologies, protocols, NOSes, wireless WANs, RAID, SCSI, Hardware, backups, virus management, upgrading and most importantly troubleshooting, this book is a must have for every network technician of all skill levels. The book has over 250 troubleshooting symptoms and the resolutions, and the book has cross references and well as web resources to use for further research. In the back of the book is a DLS Network Technician Certificate Exam, this is well worth taking and paying the fee. I found the exam challenging and there was only one tiny error on question 71, which should read Table 9-2 instead of 9-5. Overall this is one great reference book to have around.
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