November 2011
Intermediate to advanced
1056 pages
33h 50m
English
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3. Link Layer
3.1. Introduction
In Chapter 1, we saw that the purpose of the link layer in the TCP/IP protocol suite is to send and receive IP datagrams for the IP module. It is also used to carry a few other protocols that help support IP, such as ARP (see Chapter 4). TCP/IP supports many different link layers, depending on the type of networking hardware being used: wired LANs such as Ethernet, metropolitan area networks (MANs) such as cable TV and DSL connections available through service providers, and wired voice networks such as telephone lines with modems, as well as the more recent wireless networks such as Wi-Fi (wireless LAN) and various wireless data services based on cellular technlology such as HSPA, EV-DO, LTE, and WiMAX. In this ...
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