You work as the network administrator at Cer-tech.com. The Cer-tech.com network consists of a single Active Directory domain named Cer-tech.com. Cer-tech.com has 30 staff members at the headquarters…

You work as the network administrator at Cer-tech.com. The Cer-tech.com network consists of a single Active Directory domain named Cer-tech.com. Cer-tech.com has 30 staff members at the headquarters in London and 10 staff members' branch offices in Paris. The client computers of Cer- tech.com are configured to run Microsoft Windows 2000 Professional. E-mail communication is not considered to be essential. Cer-tech.com has a dedicated Network Address Translation (NAT) router for Internet connectivity. Staff members currently save their information on their local hard disks. The information is backed up to floppy disks at the end of each day. The company has grown tremendously. Cer-tech.com has not maintained a stable computer infrastructure. This results that multiple error messages are experienced on the client computers. You recommend Windows Small Business Server 2003, Premium Edition to improve network stability. You now need to identify the component that will provide the best improvement to the Certech.com network. Which component should you recommend?