CompTIA Network+ Certification All-in-One Exam Guide, Eighth Edition (Exam N10-008), 8th Edition

CHAPTER 1

Network Models

The CompTIA Network+ certification exam expects you to know how to

•   1.1 Compare and contrast the Open Systems Interconnection (OSI) model layers and encapsulation concepts

•   1.2 Explain the characteristics of network topologies and network types

•   2.1 Compare and contrast various devices, their features, and their appropriate placement on the network

To achieve these goals, you must be able to

•   Describe how the OSI seven-layer model helps technicians understand and troubleshoot networks

•   Explain the major functions of networks with the OSI seven-layer model

Networks enable connected hosts—computers—to share resources and access resources. The sharing host—a server—runs special software to enable the accessing ...