CHAPTER 3
Basic Networking and Communications
In this chapter, you will learn about
• The OSI and TCP/IP models
• Bus, star, tree, token ring, and mesh network configurations
• Common protocols in the TCP/IP suite
• Ports and protocol numbers used with common protocols
• Different network and trust architectures such as the Internet, DMZs, and transitive trusts
• Wireless security protocols such as WPA, WPA2/802.11i, AES, and TKIP
• Wireless technologies such as Bluetooth, RFID, 802.11, WiMAX, GSM, 3G, and NFC
The OSI Model
The International Organization for Standardization (ISO) developed the Open Systems Interconnection (OSI) Model as a standard model for network communications. It describes a framework for connecting multiple computers ...
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