A switch is configured with all ports assigned to vlan 2 with full duplex FastEthernet to segment existing departmental traffic. What is the effect of adding switch ports to a new VLAN on the switch?

Collision domains are determined by switch port boundaries and duplex settings, not VLAN membership - with full-duplex FastEthernet each port is already its own collision domain regardless of VLAN assignment.

VLAN configuration does not inherently improve IP address utilization - the same number of hosts still require IP addresses, and efficient addressing depends on subnetting design, not VLAN count.

Adding a VLAN does not increase the total bandwidth requirement - it redistributes the existing traffic across separate broadcast domains, which can reduce unnecessary broadcast overhead rather than increasing bandwidth needs.

A VLAN logically segments a switch into isolated Layer 2 broadcast domains - broadcast frames sent within one VLAN are never forwarded to ports in another VLAN. When a new VLAN is configured and ports are assigned to it, those ports form a new, independent broadcast domain separate from the existing VLAN 2, increasing the total number of broadcast domains on the switch by one.