LAN

Local Area Network (LAN)

Local Area Network (LAN)Local area network (LAN) is a data communication system which allows a number of devices or computers to communicate directly Threaded each other. Inside there are three known types of LAN architectures: Ethernet, Fiber Distributed ringdan token data interface (FDDI).LAN ArchitectureNetwork Architecture consists daripengkabelan, topology, packet format and access methods. Architecture commonly used in cable-based LAN network is electrically, through the development of optical technology is now widely used fiber optic cable as an alternative media and their advantages and disadvantages.The wiring system has been discussed in the media Trasmisi Wired in this section will discuss the architecture topology, access method, and packet formats.Network architecture born during the transition state. ARCNet, Ethernet or Token-Ring is one example of the old architecture that will soon be replaced with other architectures with a higher speed.Network architecture which is now widely used, although considered obsolute, supports transmissions ranging from 2.5 Mbps for ARCNet network, 10 Mbps and 16 Mbps for Ethernet Token-Ring network. This network architecture has been developed for higher performance, the network was increased to ARCNet ARCNet 20MBps Plus and Ethernet upgraded to 100 Mbps Fast Ethernet and 1000 Mbps (1 Gbps) with the name of Gigabit Ethernet.In addition to existing development, also began to implement new architectures such as fiber optics, or Fiber Distributed Data Interface (FDDI) danAsynchronous Transfer Mode (ATM). Latest technology for fiber optic adalahSynchronous Optical Network (SONET).Apart from copper cable network, also known wireless network or wireless. The wireless network uses radio wave transmission systems and microwave (microwave). Fiber optics has the advantage of the same wireless network compared to copper wires that reach a longer distance. Optical fiber is widely used for cross-island and cross country more often called-sea cables, while wireless using satellite communication. The weakness of satellite communications compared to the sea cable is a communication-satellites have a higher average delay time.