One of the fields that there is a big scope for the students to get job with handsome salary is Computer Networking field. So it is necessary for the students to know something about the computer networking field and this information not only useful for the students but also for the common people who do not have any idea about computer networking. In order to define what computer networking is, here we will see a simple example. If the two persons want to communicate or share some data, then they must do write on any of the movable disk and then take it to the other system and do copy in their system. For that, there are lots of physical works needed and at the same time it is a time consuming process. In order to avoid it, a cable will be connected between the systems and so these two persons can transfer data and can share it. Thus, the cable acts as a medium.
If we want to connect much number of systems, then it is impossible to connect the entire computer through cable, and it consumes lot of cable and money. So, for the large network people used to use wireless network where we can transfer data in air by electromagnetic waves. By that we can avoid get confusing with the web of cables. Through this technology and some interface, we can able to transfer data without any sort of physical work. This is really more beneficial to the people to transfer data in very quick and more efficient manner. This is the purpose why computer networking is necessary for an organization.