work server

How does this network, Windows Server unemployed?
There is a small office consisting of 5 computers, but the director told me that his team hosts, which acts as a server even if you have Windows XP Professional. The main confusion is the device that uses the network to all together. She wears a multi-port device, which faces the Internet. This device is a hub or switch, or something completely different. Went to Dell.
It's probably a switch or a router (router is the most common now) --- no sane person could use a stronger concentration. Routers and switches are able to allow each team to share the Internet bandwidth without splitting / dividing the bandwidth. A center divides the bandwidth between computers tones. I have a Dell Precision 650 Dual Xeon 2.4Ghz 2GB 36GB SCSI with XP Pro COA (old computer course) even use an XP computer as a server. It has all the features of a regular server to server, but a few.
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