To prepare for the CompTIA Network+ exam, you should begin by reviewing the foundations of networking. Among these, you must understand the logical models on which networks are designed and created, the protocols they use to communicate, the addressing schemes by which they identify individual devices on the network, and the technologies they use to ensure that data reach their destination. In this chapter, we cover the Open Systems Interconnection (OSI) model in depth and then the networking protocols. Both are covered in great detail on the exam and need to be completely understood before sitting ...
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