Local Network Topology LAN (Local Area Network Topology)

       Local Network (LAN) for Purposes of Information And Communication With computer networks, each job is expected to be completed quickly. Computer network capable of connecting the computer with other computers. One of the computer network is the internet. The Internet is the network technology giant that has become reality in information and communication needs of millions of people in this world. In its first development, computer networks are still using coaxial cable. Now, the network of cables are built with optical fiber (Fiber Optics) or wireless communication (wireless) TCP / IP (Transmission Control Protocol / Internet Protocol) is a group of protocols that manage computer data communications on the Internet. The computers are connected to the internet to communicate with TCP / IP protocol, because it uses the same language differences in the type of computer and operating system is not a problem. PC computer with Windows operating systems can communicate with a Macintosh computer or with a Sun SPARC running Solaris. So, if a computer using TCP / IP and is connected directly to the Internet, the computer can be connected with a computer anywhere in the world which is also connected to the internet.
 
The characteristics of computer networks:
1. share hardware (hardware).
2. sharing software (software).
3. sharing of communication channels (internet).
4. sharing of data with ease.
5. facilitate communication between network users.


Computer Networking
         Computer network is a collection of computers connected together and can share resources, such as printers, CD-ROMs, exchange files, and electronic communications between computers. The relationship between computers in a network can use the media cable, telephone, radio, satellite or infrared rays (infrared).

Types of computer networks are divided into two classifications, ie based on trasmisi technology and based on the distance.
A. Types of Computer Network Based Transmission Technology.

 Type of network based transmission technology is divided into two broadcast networks and network point-to-point.

    Here's the description:

       1. Broadcast Network This network uses a single communication channel that is used all the computers or machines connected to this network together.

       2. Network Point-to-Point Network consists of several computers or machines which often have to have many different routes because of its distance. In sending packets from a source to a destination machine, this type of packet must pass through intermediary machine that can go through many routes.
 
 B. Types of Computer Network Based on Distance.

         Tissue types based on the distance was divided into three, namely the Local Area Network (LAN), Metropolitan Area Network (MAN) and Wide Area Network (WAN).

    Here's the description:


    1. Local Area Network (LAN)
               Local Area Network (LAN) is the number of computers linked together in one particular area that is not so broad, as in one office or building. Broadly speaking there are two types of networks or LANs, namely Peer to Peer network and Client-Server networks. In a peer to peer network, every computer connected to the network can act both as a workstation or server. While in Client-Server networks, only one computer that served as the servers and other computers acting as workstations. Between these two types of networks each have their advantages and weaknesses, where each will be explained.

    LAN is composed of several basic elements that include hardware and software components, namely:
        * Physical Component Personal Computer (PC), Network Interface Card (NIC), cable, network topologies.

        * Network Operating System Software Components, Network Adapter Drivers, Network Protocols.
             This network is called the network area, ie a network that is limited to small areas, such as in an office environment in a building, school or campus. In a LAN network, there is one computer, usually called a server, whose function is to provide software services (software), regulating the activity of the network and save the file. In addition there are servers connected to another computer in the network (network) is called with the workstation (client). In general, the LAN network technology to use the media cable connects computers untruk used.