CompTIA’s Network+ certification Study Guide part 31 is a globally-recognized, vendor neutral exam that has helped over 235,000 IT professionals reach further and higher in their careers. The 2009 Network+ exam (N10-004) is a major update with more focus on security and wireless aspects of networking. Our new study guide has been updated accordingly with focus on network, systems, and WAN security and complete coverage of today’s wireless networking standards. | 286 CHAPTER 7 TCP IP and Routing career-limiting when considering becoming a network engineer. The TCP IP suite is primarily what keeps the Internet running as well as it does. TCP IP is also used to provide network communication in most of the world s companies universities and countries. Anywhere there is a network connection it is most likely that TCP IP is in use. Keep in mind that this chapter does in no way explore all there is to know about TCP IP as that could literally take volumes to cover. By the end of this chapter you should be comfortable with navigating numbering schemes have a better understanding of the protocol suite and can work your way through any problem presented to you on the Network exam and in real life . TCP IP has rattled many test takers in the past who have taken exams where these fundamentals are tested extensively. As Network is somewhat of an entry-level exam you will not have to have TCP IP addressing and design perfected or mastered but you will have to know the fundamentals of it. Learning about network protocols is not too tough an issue once you understand the underlying mechanics. The intent of this chapter is to ensure that you have the foundation and fundamental knowledge needed to pass the exam and build the rest of your studies on. Now let s delve into these network protocols and see exactly what we need to know for the Network exam as well as in your day-to-day activities as a network administrator. Note This chapter covers TCP IP in depth and also looks briefly at other protocol suites such as AppleTalk and IPX SPX. These protocols will show up on the exam but not as much as TCP IP. Although the information in this chapter is good for test preparation purposes as a working network engineer you should know more about these somewhat obscure and less-commonly used protocols. TCP IP In the 1970s Internet Protocol IP was developed as part of the Transmission Control Protocol effort to provide logically addressed and .
