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It's no longer necessary to receive a fax on a fax machine and then have to take that fax to a person. We can use a Fax Server connected with our e-mail to receive faxes and then send those through the e-mail system just like an e-mail. So a Fax Server is generally a dedicated Server that receives faxes and then distributes those faxes to the correct people. A Domain Name Server or DNS Server is responsible for resolving IP addresses on the Internet. Every entity that communicates on the Internet, and that communicates over the TCP/IP is called a host, and every host has a host name. And host names can then be resolved to a TCP/IP address, so that computers can communicate over the Internet. This again is a tremendous advantage to organizations as well as to individuals, because we can get access to information all over the world. It's something that we have come to take for granted after the year 2000. A WINS Server or Windows Internet Name Server helps computers and servers to be able to recognize each other, and recognize the services that they can provide through the network. So a Windows Internet Name Server is sort of like a registration desk at a hotel; when a computer checks on to the network it registers with WINS. And when it registers, it registers the fact that it's there and the services that it can provide the network. Then when a client needs those services, it can go to the WINS service and find out where there is a machine that can offer the services that it needs. Every computer that communicates on a network must have a protocol to communicate, and the most common protocol is TCP/IP because this is the protocol that's used on the Internet. In order to automatically assign TCP/IP addresses, we have a specific Server called a DHCP Server, a Dynamic Host Configuration Protocol Server. And a DHCP Server can be thought of as the welcome wagon. When a computer comes on to the network, it broadcasts for a DHCP Server; it basically calls out to see if there is anyone who can help it out to get an IP address so that it can begin to communicate on the network. And the DHCP servers answer the computer, and they give it an IP address as well as possibly the address for a WINS Server, as well as the addresses for the DNS Servers, and any Gateways or routers that they would need information about. So the DHCP Server rolls out the red carpet for clients and other servers that come on to the network and need to have the resources of the network. And DHCP servers can be configured to give specific resources to specific groups of computers. We will continue our discussion of network Server roles in our next section.