There are switches available today that are also capable of routing, and these L3 switches are becoming more and more popular as the price goes down. Having an L3 switch eliminates the need for routers in some small networks, so you need to know about them.
Here's the deal - for your Network+ exam, switches work at Layer Two, and that's it. That's networking theory. Today's networking reality demands that you know that L3 switches do exist and can perform routing.
Just forget about that when you go into the exam room unless L3 switches are specifically mentioned. If the term used on any exam is simply "switch", they're talking about a basic L2 switch.
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