16.4. Broadband Services

Now, before I get into telling you all about the WAN protocols required to meet the CompTIA objectives, I've got to talk about cable modems and DSL as solutions for connecting to WANs. I think it will really help you understand the practical differences between DSL and cable-modem networking, and they happen to be CompTIA objectives as well.

Dedicated broadband services include transmissions over media in a broad range of frequencies. The various forms of digital subscriber line (DSL) services are broadband in the sense that digital information is sent over a high-bandwidth channel above the baseband voice channel on a single pair of wires. Ethernet digital signals sent over a cable modem from your local cable television ...

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