Designing a LAN



Designing a LAN

Design Characteristics Of A Lan With 25 Users With One Domain Controller

The Domain controller works replication of all member server. It contains all information of active directory. Active directory contains information about objects and network resources as well as the services that makes the information available and useful over a network.

The network model described above is fine for a limited number of devices, say up to 50 or so PC's. For larger networks it becomes necessary to use what is called a routed network. As mentioned earlier IP addresses have a network part and a host (device) part defined by the subnet mask(Gardner, 2009). This is rather like a postal address where there is a house number (device part) and a street, town, county part (network part). Devices with the same network portion of an IP address are like houses in the same street. When you connect to a device by name your PC needs to resolve that name to an IP address, further the IP address then needs to be resolved to a MAC address. MAC addresses are the real addresses that devices use to communicate. They consist of six 2 byte hexadecimal numbers; something like “00-00-35-F4-C3-59”. Since it is impossible to ever remember these numbers for each device, we use logical addresses and names which we mere humans can handle more easily. The way in which devices resolve these addresses is by sending a query to every device on the network (network here refers to the number of hosts with the same network portion of the IP address). These queries are called broadcasts. There are a lot of these broadcasts going on in even a small network. If you were to set up a network with hundreds of devices there would be so many ...