Can collisions occur in a switch?

No, collisions do not occur in a switch under normal operation. A switch operates at the data link layer (Layer 2) of the OSI model and uses MAC addresses to forward frames to specific ports, allowing for dedicated bandwidth between devices. This means that each device connected to a switch has a separate collision domain, preventing packet collisions. However, collisions can occur on a shared network segment, such as with hubs or in wireless networks.