CHAPTER 4

Communication and Network Security

This domain includes questions from the following topics:

•   OSI and TCP/IP models

•   Protocol types and security issues

•   LAN, WAN, MAN, intranet, and extranet technologies

•   Transmission media

•   Wireless technologies

•   Network devices and services

•   Communications security management

•   Remote access technologies

•   Threats and attacks

•   Software-defined networks

•   Content distribution networks

•   Multilayer protocols

•   Convergent network technologies

A network forms the backbone of an organization’s IT infrastructure. Without it, systems couldn’t communicate and users couldn’t share resources in real time. Because of the myriad protocols, technologies, and concepts involved ...

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