Each author/publisher has their own idea about what material to emphasize and what approach to take, so you should purchase several different CompTIA Network+ certification study guides. Another advantage to using several different study materials is that they reinforce each other.
The first thing you want to look at when selecting study materials is the copyright date. Networking technology changes at a rapid rate, so you don't want to purchase study materials that date from say, 1999. In fact, I wouldn't want to be using materials older than about five years.
Another important thing to look for is the number of the exam that the study materials are designed for. The current CompTIA Network+ exam is number N10-005, which was released Dec. 1, 2011. But when CompTIA releases new exam requirements, the previous exam stays in effect for eight to ten months before you need to study for the new material.
Also only a portion of the new exam requirements is new material, the vast majority of it is a repeat of the previous exam requirements, so you can gain a lot of valuable knowledge from studying older exam preparation materials.
As I stated earlier, one way to prepare for, and pass the CompTIA Network+ exam is to take practice exams. After each practice exam see which questions you missed, study the related material, and retake the practice exam. Take more practice exams, study more material related to the questions you missed, until you have the confidence that you can take and pass the actual exam. To follow this method, you should give preference to study guides that include a CD ROM containing self tests.
CompTIA Network+ Certification All-in-One Exam Guide by Mike Meyers gives you complete coverage of all the material included on CompTIA Network+ exam with learning objectives at the beginning of each chapter, exam tips, and practice questions. Mike Meyers has a unusual ability to explain things so that they can be easily understood. He also gives you an excellent introduction to networking, so if you're just getting familiar with computer networking this is the study material you need.
This book includes two full practice exams, an hour of video training, and a collection of Mike's favorite shareware and freeware networking tools and utilities. You'll find lots of other Mike Meyers CompTIA exam preparation material available, it's all written in his easily understand method, and it's all good.
Emmett Dulaney and Michael Harwood's CompTIA Network+ Exam Cram is another exam preparation material that I would recommend. The book covers every exam topic including substantial new coverage of security and wireless, along with practice questions for every exam topic.
But you'll mainly be interested in the companion CD which includes the Pearson IT Certification Practice Test engine, complete with hundreds of exam-realistic questions and two complete practice exams. The assessment engine offers you a wealth of customization options and reporting features, laying out a complete assessment of your knowledge to help you focus your study where it is needed most.
I would also recommend CompTIA Network+ Training Kit published by Microsoft Press. The fact that it's from Microsoft Press gives you the confidence that it meets a very high standard of quality. It features lessons and reviews that fully cover each exam objective. Then, it reinforces what you’ve learned by applying your knowledge to real-world case scenarios and practice exercises.
It also includes practice tests on CD. You can work through hundreds of questions using multiple testing modes to meet your specific learning needs. You get detailed explanations for right and wrong answers - including a customized learning path that describes how and where to focus your studies.
There's a lot of CompTIA Network+ study and exam preparation materials out there, The ones I've presented here are the some of the best materials available. Most importantly they all come with computer based practice exams. Just keep taking the practice exams, studying the material related to any questions you missed, and retaking the exams, until you have the confidence that you can take and pass the actual exam.
More Networking Basics:
• Media Access Control (MAC) Sublayer of the OSI Data Link Layer
• What is Port Forwarding?
• Satellite Broadband Internet Service
• Network Patch Panel Basics
• Home and Small Office Networking Guide
• Virtualization For Dummies Cheat Sheet
• What is DSL and how can it benefit my home or small business?
• What is Cloud Computing?
• The Function of the Three Planes of Junos Network OS
• The Network Technician Career Field