11/29/2015
However, computer users usually do not need to know everything about the network. In fact, most do not even know when they need a computer network and when not needed. Most users who use computers in their work knowing that somehow computers can communicate over a network and knowing that some of their applications can not be run when the network was shut down.
One of the best ways to network is to learn the lessons of what was done by the end user network. Most of you have used the network for work or at school. This article discusses the features - the basic features that might want to get by the end users of its network. Through the next part of the next article, I will explain the basis - the basis of how the network supports the end user.
Using Network By Coincidence
Some of the most common network services that have been hidden from the end user network. You can think of it as the cause of a service network usage by chance by the end user because he does not realize that the network was involved in the task - the task was doing.
To explain the network services "accident", I will use the shadow workers in remote offices. We call him Fred. Fred is the master of his own domain. He has a PC, Printer, and he can do all his duties without many interruptions from the central office. To carry out its duties a day - day, Fred opens a document using a word processor, change some text, and print a copy. Subsequently, he sent a letter to customers and save the changes - changes to the letter. Figure 2.1 shows the basic idea.
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| Figure 2.1 |
Steps - steps in the following picture:
1. The word processing program reads the letter of the disk drive.
2. When Fred click the print icon, the PC sends a copy of the letter to the printer.
3. When Fred save the file, the program as a word processor to write the file back to disk.
Step one is often called a file is read, which means the computer to copy files from the disk drive memory to a computer so that the computer can doing. Furthermore, by doing dile write, computer replaces the old file on the disk drive with a new file that has been revised.
Fred lives quite well separately while, but like anything else, the changes sometimes - sometimes can occur. Fred growing company, and he can not handle all the work. Thus, the central office sends a hotshot, named Wilma, Fred remote office to work with him and help him finish the job.
Wilma brought high-end PC fast power-dooper her to his new office and install a network. He also took over the old printer Fred and will connect to his PC. Became the ruler of the strange, Wilma also copy all customer letter from Fred PC via their own PC. Figure 2.2 shows the general concept similar to a simple LAN in Chapter 1, "Network That Is?"
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| Figure 2.2 |
Wilma set everything, including the network, so that he knows how the network works. But Fred did not understand why she was confound everything up like that. So, in the morning - morning, after drinking a cup of coffee, Fred lit a word processor, take the diskette, and walked toward the Power-dooper computer Wilma and copy a customer letter to the disk. He walked back to his desk, using computer clonkey renew his letter, and then walked back to the computer with a floppy wilma. Furthermore, Fred copy the file back to the computer wilma, replaces the old file, and use word processing on a computer Wilma, he scored a copy to be mailed to the customer.
In the example, Fred was not using the network. He instead uses a method called Sneakernet. Sneakernet is a sarcastic term that refers to a process that does not use a real network. But it goes back and forth between computers using floppy CD-ROM, move files manually and it takes sneaker [sneakers] comfortable!
Fred Sneakernet method can be implemented, but the way it takes more time than before to send relief headquarters, which is Wilma. Finally, Wilma visited the office and found Fred was using his rubber shoes are comfortable, ready - ready for - paced office.
"Fred, I think I forgot to tell you how to use the network! You do not even need to know that the network was there! If you see Drive C in a folder named Costumers, you will see the same files as you normally do. File - the file exists in my PC - File Server - but not invisible to you. Additionally, when you click the Print icon of your word processor, you will see the name of the printer SomeOldPrinter, clever name is not it? If you print on the printer, it will be printed on the same printer belongs to your parents even though he is connected to my PC. My PC is referred to as Print Server. So, you can print on the same printer yours. You can do your job the old fashioned way, from clonkey your computer, but you can still wearing rubber boots if you want it! "
So that the network can be operated, computer Wilma provide file service. File Service includes the process by which a computer, usually called a file server, save the file - the file on its disk drive and allow other computers to read and write to the file using the network. The term "File Server" refers to a computer that provides file storage on a disk drive and make it available to be read and written by someone else, in this case, the computer Wilma. (Disk drives are components of a computer where you can save files permanently.)
Likewise, Wilma computer providing print services, a process in which a computer allows other computers to print files to a printer that is physically connected to the computer. Print server refers to a computer that provides printing services.
Fred computer can still do all three steps are shown in Figure 2.1, but that is not known Fred is the fact that the work to read, print, and write occurs across the network.
Remember that a network consists of Software, Hardware and wiring which allows various computers to communicate well.
