Advantages of computer networks
If the computers run independently, applications and resources (such as printers or scanners) need to duplicate for each of them. For example, if two analyst willing to work with an Excel spreadsheet and print out the results of its work to a printer, both of the computers must have its own copy of the Excel program and your printer. If users need to jointly apply their data, those data would have to be continuously transferred between computers using a floppy disk or a CD-RW drive. If users need to use their computers together, each of them would have to make an effort to understand the other system, because each of them has its own desktop and application organization, its folder structure and so on. If the network added more users, then all they could jointly use Excel, data, and resources in the same way. In other words, computers that are members of the network can share:
- documents (memos, spreadsheets, invoices, etc.);
- electronic mail messages;
- software text;
- software for project support;
- illustrations, photographs, video and audio files;
- live audio or video stream;
- CD-ROM drives and other removable storage devices (such as Zip drives and Jaz drives);
- hard drives.
Because a computer network is a set of computers, better manage the entire network from a central point (network administrator, network administrator). Take the above example and assume that our analysts gave the new version of Excel. If their computers are not networked, each system will have to upgrade and test separately. It’s not so difficult to do, if only the two systems. But if your company has tens or even hundreds of personal computers, to hold individual modernization of each, of course, is expensive and ineffective exercise. If you have a computer network, to upgrade the application, the upgrade is performed once on the server and all workstations of this computer network will be able to immediately begin using the updated software. Centralized administration allows you to manage the security of computer network and monitor its work.
But in addition to sharing information, computer networks provide other advantages. NET allows you to store and protect information. For example, it is very difficult to coordinate and manage the process of reservation information with a large number of independent PCs. The system organized into a computer network, can automatically create backup files in one central site (for example, tape device connected to a network server). If the information on a particular computer is lost, it can be easily found in the central nervous system backup and restore. In addition, the level of data security. Access to a personal computer, usually means access to all of the information contained in this computer. However, security capabilities, which provides computer network will not allow unauthorized users to gain access to important information or delete it. For example, every network user has your registration (“loginnoe”), the user name and password that give access only to a limited number of network resources. Finally, computer networks are ideal environments for communication between users. Instead of exchanging paper reminders and notes, electronic mail allows users to send each other letters, reports, images, almost all file types. It also allows you to save money on print materials and reduce delays with the delivery of the correspondence between divisions of the company. Email is a powerful tool that enables Internet users to exchange messages almost instantaneously, almost regardless of its location in the world.
Author: Jaringan Komputer