Computer Networks Question:

Switch is a data link layer device that connect multiple LAN segments to form
a single network segment. In switch when we transmit the data first it examine
the data packets for source and destination, then the switch forward the data
packet to the appropriate destination.
Switch minimize the possibility of collision of data packets by reducing
collision domains.
Collision domain are the network segment between two network devices, when
the two devices transmit a data at a time then collision will occur. In such
case both the device stop working. Then it starts to work for a specific period
of time and retransmit the data.
Switches reduces the collision using micro-segmentation.