Introduction
Usually, companies go to the computer to satisfy their information needs usually start with a few computers and a few peripherals. But little by little they are expanding both hardware software resources as resources for information management. This expansion often leads associated problem of redundancies, both software, data, hardware, etc. The Local Area Network (LAN) allows the interconnection of a number of computers and peripherals in this way can be interconnected and share resources.
COMPUTER NETWORK
It is the set of terminal computers and devices that communicate with each other, providing the necessary for users from different locations (local or remote), in similar situations have access to information environment.
PURPOSE
Share files and programs.
Share network resources.
Share databases.
Improve communication users.
Groupware and workflow.
Centralized management.
Improve corporate structure.
Local area network (LAN)
A LAN is a network that connects computers in a relatively small predetermined area (such as a room, a building or set of buildings). LANs can be connected to each other via telephone lines and radio waves.The local area network will allow us to share databases, software and peripherals such as a modem, printer, scanner, among others; making available other media such as email and chat.
In addition, a local area network bears a significant saving both money because there is no need to buy many peripheral, less paper is consumed, and an Internet connection can use a single shared telephone connection for several networked computers; and time, as management information and work is accomplished.
Local networks allow interconnected computers that are within the same building (either within the same building as one that is at a distance), but always bearing in mind that the physical environment that unites can not have more than a thousand meters.Furthermore, it is noteworthy that a LAN can be connected to another through a WAN (WAN Wide Area Network), which serve other communication networks such as the telephone network to transmit information between the communicating computers.
Creating a LAN
When you have several computers, it may be desirable to connect them together to create a local area network (LAN). Contrary to what people believe, the cost of setting up a network with these characteristics is very small.
There are two main types of LAN architecture:
To create a Network RJ45 need:
Several computers running the Windows operating system installed (you can have two computers with different versions of Windows on the same network);
Ethernet cards connected to a PCI or ISA port (with an RJ45 connector) or integrated into the motherboard. Make sure the diodes on the back of the network card, if applicable, are lit when the computer is turned on and that the cable is connected. There are also network adapters for USB ports, especially in the case of wireless network adapters.
RJ45 cables for connecting networks;
A hub device that can connect RJ45 cable from different computers on the network, which are not expensive (worth approximately € 50), a switch or, alternatively, a crossover cable when connecting only two teams.
Architecture
To create a LAN RJ45, it is recommended to adopt a configuration structure known as "star" computers are connected to the hub via the RJ45 cable. A hub is a device that transfers data from one computer to another. Your choice must be made depending on the number of connected computers so that sufficient outlets (called "ports") in the hub.
In the case concerned an extensive network or one with considerable width requirements band, a switch is a more convenient option as it can distribute packets only to the relevant teams, whereas a hub systematically sends to all connected equipment.
If you are connecting only two teams, may obviate the use of hub connecting directly both teams with an RJ45 crossover cable.
Sharing resources on LAN
To share a folder all the files that are in it or superimposed when be shared.
These steps are to share files between computers on a network. Use remote access if you want to share on the Internet. Go to the folder you want to share and click on it with the right mouse button. Choose Properties. By clicking above on the lapel Share. Click on the button called also share. By clicking on the dropdown menu above and click All. Then click Add that to the right button. You see that is added below the name All. Click it. Reading: a menu with two options (permission levels) appears. Other users on the network can open files in this shared folder, but not to change or delete. Reading and writing. Any network can open, change, or delete files in the folder. Choose what you prefer and click the Share button below.
NOTE: If at any time you want to change the permission level repeat these steps and modify this. Close the window by pressing Done. Then click Close in the Properties window to which you return.
Conclusions
In short, the benefits of using a computer network local area are: You can share peripherals such as: are printers, modems, scanners, and other devices. You can share large amounts of data by using transmission network databases. This data redundancy is avoided and facilitating access and update data. The network becomes a mechanism for communication among users connected to it, as it allows sending messages through the use of email, either between users on the local network or between users on other networks or systems, scheduling meetings or exchanging files of all types. The efficiency of computers increases, by providing the user an entire system that makes queries faster and comfortable. It is a complete security system, can be prevented users from accessing certain areas of specific information, or information that can read but not modify it. The network access is controlled by user names and passwords. The control of users accessing the network is performed by the operating system. The control of users accessing the information is carried out management software database being employed.
The network operating systems try to give the impression that remote resources accessed by the user are local to the computer from which the user is working. For example, a user may be using the information from a database. The user at any time has knowledge of whether the information which is being accessed is on your own computer or in another within your local network or anywhere else in the world.
Usually, companies go to the computer to satisfy their information needs usually start with a few computers and a few peripherals. But little by little they are expanding both hardware software resources as resources for information management. This expansion often leads associated problem of redundancies, both software, data, hardware, etc. The Local Area Network (LAN) allows the interconnection of a number of computers and peripherals in this way can be interconnected and share resources.
COMPUTER NETWORK
It is the set of terminal computers and devices that communicate with each other, providing the necessary for users from different locations (local or remote), in similar situations have access to information environment.
PURPOSE
Share files and programs.
Share network resources.
Share databases.
Improve communication users.
Groupware and workflow.
Centralized management.
Improve corporate structure.
Local area network (LAN)
A LAN is a network that connects computers in a relatively small predetermined area (such as a room, a building or set of buildings). LANs can be connected to each other via telephone lines and radio waves.The local area network will allow us to share databases, software and peripherals such as a modem, printer, scanner, among others; making available other media such as email and chat.
In addition, a local area network bears a significant saving both money because there is no need to buy many peripheral, less paper is consumed, and an Internet connection can use a single shared telephone connection for several networked computers; and time, as management information and work is accomplished.
Local networks allow interconnected computers that are within the same building (either within the same building as one that is at a distance), but always bearing in mind that the physical environment that unites can not have more than a thousand meters.Furthermore, it is noteworthy that a LAN can be connected to another through a WAN (WAN Wide Area Network), which serve other communication networks such as the telephone network to transmit information between the communicating computers.
Creating a LAN
When you have several computers, it may be desirable to connect them together to create a local area network (LAN). Contrary to what people believe, the cost of setting up a network with these characteristics is very small.
There are two main types of LAN architecture:
- The connected networks based on Ethernet technology, which represent the majority of local connections. Often are referred to as RJ45 networks, usually RJ45 Ethernet networks using cables.
- Wireless networks, which generally use the WiFi technology, correspondent this guy.
To create a Network RJ45 need:
Several computers running the Windows operating system installed (you can have two computers with different versions of Windows on the same network);
Ethernet cards connected to a PCI or ISA port (with an RJ45 connector) or integrated into the motherboard. Make sure the diodes on the back of the network card, if applicable, are lit when the computer is turned on and that the cable is connected. There are also network adapters for USB ports, especially in the case of wireless network adapters.
RJ45 cables for connecting networks;
A hub device that can connect RJ45 cable from different computers on the network, which are not expensive (worth approximately € 50), a switch or, alternatively, a crossover cable when connecting only two teams.
Architecture
To create a LAN RJ45, it is recommended to adopt a configuration structure known as "star" computers are connected to the hub via the RJ45 cable. A hub is a device that transfers data from one computer to another. Your choice must be made depending on the number of connected computers so that sufficient outlets (called "ports") in the hub.
In the case concerned an extensive network or one with considerable width requirements band, a switch is a more convenient option as it can distribute packets only to the relevant teams, whereas a hub systematically sends to all connected equipment.
If you are connecting only two teams, may obviate the use of hub connecting directly both teams with an RJ45 crossover cable.
Sharing resources on LAN
To share a folder all the files that are in it or superimposed when be shared.
These steps are to share files between computers on a network. Use remote access if you want to share on the Internet. Go to the folder you want to share and click on it with the right mouse button. Choose Properties. By clicking above on the lapel Share. Click on the button called also share. By clicking on the dropdown menu above and click All. Then click Add that to the right button. You see that is added below the name All. Click it. Reading: a menu with two options (permission levels) appears. Other users on the network can open files in this shared folder, but not to change or delete. Reading and writing. Any network can open, change, or delete files in the folder. Choose what you prefer and click the Share button below.
NOTE: If at any time you want to change the permission level repeat these steps and modify this. Close the window by pressing Done. Then click Close in the Properties window to which you return.
Conclusions
In short, the benefits of using a computer network local area are: You can share peripherals such as: are printers, modems, scanners, and other devices. You can share large amounts of data by using transmission network databases. This data redundancy is avoided and facilitating access and update data. The network becomes a mechanism for communication among users connected to it, as it allows sending messages through the use of email, either between users on the local network or between users on other networks or systems, scheduling meetings or exchanging files of all types. The efficiency of computers increases, by providing the user an entire system that makes queries faster and comfortable. It is a complete security system, can be prevented users from accessing certain areas of specific information, or information that can read but not modify it. The network access is controlled by user names and passwords. The control of users accessing the network is performed by the operating system. The control of users accessing the information is carried out management software database being employed.
The network operating systems try to give the impression that remote resources accessed by the user are local to the computer from which the user is working. For example, a user may be using the information from a database. The user at any time has knowledge of whether the information which is being accessed is on your own computer or in another within your local network or anywhere else in the world.
No comments:
Post a Comment