Within a given network, computers can send files, emails, etc. to each other. Even things like instant messaging can be done. These days we take these basic things for granted, but intense designing effort has been put in it.
This is when two or more PCs are directly connected to each other. For example, if there were four machines in the network, PC1 would be connected to PC2, PC2 would be connected to PC3, and PC3 would be connected to PC4. This means each PC is dependent on the other. And if there were a problem with any one, all of them would be affected.
The other type is the client server connection. This is the type of connection where all the machines are connected to one central machine. This is more complicated, but one that is much more efficient than the peer-to-peer type.
WAN or Wide Area Network is when several LANs or independent machines are connected to a single, wider network. The Internet is the perfect example of WAN. Emails, Chat Rooms, and Ims, all connect to the WAN of the Internet. WAN is much more complex and requires connecting devices or hubs from all over the world.
Metropolitan Area Network is the one in which two or more communicating devices are geographically separated, but are in the same metropolitan city and are connected to each other. It is meant for a larger area than LAN, but a much smaller area compared to WAN.
Some of the technologies, which use MAN include FDDI (Fiber Distributed Data Interface), SMDS (Switched Multi-megabit Data Service), ATM (Asynchronous Transfer Mode), etc. They are usually characterized by very high speed connections.
Networking Design Tips
Networks and their servers need to be designed according to the requirement of the organization. Here are some tips to do the same.
The processor is a very important component. It is what processes all the activities of the connection. Pentium Processors are superior processors to be used in designing.
Hard disks are where all the data is stored permanently. While selecting a hard disk, consider the Smart Monitoring and Reporting Technology, as this is what will be monitoring the hard drives. Provide a hot swap disk drive that can replace the faulty hard disk.
This is an environment created when two or more servers operate as a single server. This is so as to encourage performance, reliability, and load balancing.
While you are selecting the memory, consider Error Correcting Code technology, this fixes and repairs errors of single and multi bit varieties.
There is a need for multi-power supply while designing. This is done so that in the case of failure of one source of power supply, there is always another available.
This is a designed adapter that monitors the performance of the various parts of the hardware.
There are thousands of monitoring software available in the market to monitor the performance of the server and the other machines within the connection.
Knowing all this will certainly help you while working with a group of computers. Also, a career in this field is one of the most desired. Whether for a career or not, this information will certainly be helpful.