I feel like most the answers here are missing info or not explaining it in a simple enough fashion. all 3 are for sending/receiving data.
Hub- broadcasts all data to all connected devices period
Switch – broadcasts data to and from the corresponding connected devices using their MAC address as an identifier
Router – same as a switch but uses IP addresses instead of MAC
these are the most basic differences. If someone who didn’t know a thing about computers or networking asked me Id explain the differences as I have above before id mention anything about segmenting networks and what layer they work on…
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