What is the reason a network administrator would segment a network with a layer 2 switch?

A. To create fewer collision domains
B. To eliminate virtual circuits
C. To enhance user bandwith
D. To isolate ARP request messages from the rest of the network

D. To isolate ARP request messages from the rest of the network

By segmenting a network with a layer 2 switch, the network administrator can isolate ARP request messages and prevent them from flooding the entire network. This can help improve network performance and security by controlling the flow of traffic within specific segments.