Client and Server Network

• Client /Server Network – This network is the ultimate in security and also requires that one computer, the server acts as a central location for all login account information. The server runs a special operating system called the NOS which typically could use a multiple different amount of server applications, but we are going to use Windows 200x Server. The server will typically maintain the e-mail system, data backup, special applications and connections to a limitless number of additional resources. Now that we have the network part down lets add some clients which are basically workstations that are joined to a domain and if you remember that's why we are a Windows based server that's comes with Microsoft.

• Switch – A device that is similar to a hub, the only difference is that it's smarter. For those who don't know what a hub is I'll explain briefly. A hub is a simple network that usually has 4 to 5 ports for connection with other computers; data is sent from one computer to all the others. The switch is smarter simply for it completes the same task but sends the data to the specific computer instead of all of them.

• Router – Interconnectivity between a like and unlike devices on the LAN or WAN. They determine the flow of data based on these factors least cost, minimum delay, minimum distance and least congestion. It is said that routers are the backbone of the Internet. With that said we have many different types of routers such as the IEEE-802.11A, B, G and N. The "G" router replaced the "B" due to it was 5 times as fast. The "N" router can perform at 2.4GHz and 5GHz which quadrupled the throughput of the "G" and doubled the range.

• DNS /Server – Time on the Internet sending e-mail or browsing the Web, then you use domain name servers without even realizing it. Domain name servers, or DNS, are an incredibly important but completely hidden part of the Internet. The DNS system forms one of the largest and most active distributed databases on the planet. Without DNS, the Internet would shut down very quickly. When you use the Web or send an e-mail message, you use a domain name to do it. For example, the URL http://www.example.com" contains the domain name example.com. So does the e-mail address pc@example.com? Human-readable names like "example.com" are easy for people to remember, but they don't do machines any good. All of the machines use names called IP addresses to refer to one another. For example, the machine that humans refer to as "www.example.com" has the IP address 72.42.255.45. Every time you use a domain name, you use the Internet's domain name servers (DNS) to translate the human-readable domain name into the machine-readable IP address. During a day of browsing and e-mailing, you might access the domain name servers hundreds of times!

• DHCP

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