If you’ve been around the networking world for even a short duration, you’ve heard lots of terms that are thrown around referring to cabling. We’ll start off with a disambiguation of all the terminology that gets thrown around when discussing physical cabling, then answer a couple basic questions: Why do we need crossover cables vs straight-through? What exactly is Twisted Pair? How is a single bit transmitted across the wire? Finally, we’ll wrap things up with a look at the standard for Gigabit Ethernet. But in light of our mission statement, we thought the topic of Ethernet Wiring deserved a bit more depth. Initially, this article was meant to just cover the basic differences and use-cases for Crossover cables and Straight-through cables. It also determines how to interpret those bits into meaningful frames. It describes how to send bits (1s and 0s) across each wire. Ethernet is a family of specifications that governs a few different things: It covers all the different wiring specifications (10BASE-T, 100BASE-TX, 1000BASE-T, etc…).
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