Driving Where I Want and When I Want Is Pretty Cool

Driving Where I Want and When I Want Is Pretty Cool

In real life, it's obvious why you can't just drive anywhere you want, any time you wantyou'll have a wreck. Or worse yet, someone else's blatant disregard for the law might cause you to be in a wreck!

Interesting, when you use Ethernet hubs, even if you obey the rules, wrecks (called collisions in Ethernet lingo) occur. A collision occurs when two or more frames are sent over a single twisted pair at the same point in time. The result is that none of the frames is intelligible. However, it's better to avoid the collisions if possible. So, Ethernet defines some rules of the roadrules that say when you can use the LAN and when you can'tand what to do if you have a wreck.