Chapter 2. Telecommunications and Network Security
The Telecommunications and Network Security domain covers a wide range of topics directly related to networks, starting with core networking knowledge such as the OSI and TCP/IP models. Common networking hardware includes routers, switches, firewalls, and proxy servers, which can be used in local area networks (LANs), wide area networks (WANs), virtual LANs (VLANs), and virtual private networks (VPNs). Data is sent over both wired and wireless transmission media, and a variety of security measures are available to provide confidentiality, integrity, availability, and authentication for transmissions over both public and private networks. Networks are commonly attacked, and systems that are accessible ...
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