A switch has 48 ports and 4 VLANs. How many collision and broadcast domains exist on the switch (collision, broadcast)?

This choice incorrectly assigns the number of collision domains and broadcast domains. 4 collision domains would mean ports share collision domains, and 48 broadcast domains would mean each port is a VLAN.

Each of the 48 ports on a switch operates as a separate collision domain, preventing collisions between devices connected to different ports. Each of the 4 VLANs segments the network into distinct broadcast domains, meaning broadcasts are contained within their respective VLANs.

This choice incorrectly identifies the number of broadcast domains as 1, which would only be true if there were no VLANs or only one VLAN.

This choice incorrectly identifies both the number of collision and broadcast domains.

This choice incorrectly identifies both the number of collision and broadcast domains, suggesting a single collision domain which is characteristic of a hub, not a switch.