Reduced internet traffic.-a proxy server handles traffic to the internet on behalf of the clients on the internal network. it can be configured to control which the internet requests can be permitted and which will be denied. this will control which web sites users can access and which they cannot, and can cache frequently requested web pages, reducing internet bandwidth usage.incorrect answers:a, d: network collisions and broadcast traffic can be reduced by implementing routing and subnetting.c: a dhcp server is used to automatically assign tcp/ip configurations to hosts on a network. dhcp traffic can be reduced by increasing the dhcp lease period.reference:david groth and toby skandier, network+ study guide (4th edition), sybex, alameda ca, 2005, pp. 134-13, 142-144.