But how and what causes these changes to the earthâs surface? There are basically 2 types of changes that occur to the earthâs surface (i) Slow change and (ii) fast change. Fast changes occur through the actions of Earthquakes, volcanoes, landslides, etc. while slow change takes time and has a process.
People used to use hubs over switches because switches were much more expensive than hubs, but nowadays it's pretty standard to get a switch if you have several devices on the network since they're both around the same price. dbhosttexas. February 13, 2013 4:14:00 PM.
However, the switch part of Layer 3 switch is there because: 1  The layer 3 switch looks like a switch. 2  The layer 3 switch will act like a switch when it is connecting devices that are on the same network.  The layer 3 switch is the same as a switch with the router's IP routing intelligence built in.