LAN

Overview of LAN

1. LAN stands for Local Area Network (Local Area Network) The personal computer and other computers within a limited area 
   are connected together using good quality cables so that the user can exchange of information, sharing of peripherals, and use the program as well as the data were stored in a computer dedicated service called a file (file). LANs have multiple scales and different levels of complexity, it can only link a couple of PCs and shared an expensive peripherals such as printers, laser, for example. The more complex the system, the central computer (Host Server) allows users to exchange information with each other and penetrate into the shared database.
   
   
   
   
   
   
   LAN connected devices
   
   


2. The scope of application of the LAN - LAN is usually used to connect computers in the home, in a room Game room, NET, in a building of offices, School of Distance LAN hoc.- world term within a radius of about 100m- Computers distance than normal people use the Internet to exchange information.


3. The type of LAN play a) LAN play style BUS
   
   
   
   
   
   
   
   
   
   LAN play style BUS
   
   
   
   
   - The BUS-style computers are connected via a cable shaft, at both ends of the cable axis Terminador marked the end of the backbone, each computer is connected to the backbone via a Transceptor - Pros: + The advantage of this network is to be cost-saving cable. - Cons: + drawback is the slow speed networks on cable + When there is a problem, the entire network will cease operations + When there is a problem difficult to check for errors >> Do networks have many disadvantages should in fact rarely used b ) the type of LAN play RING (ring type)
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   Network game type RING
   
   
   
   - With RING type computers are connected together along a closed, each computer is connected to the backbone via a Transceptor. - Pros: + The advantage of this is to save network cable, speed BUS type faster. - Cons: + The downside of this network is still slow speed on cable + When there is a problem, the entire network will cease operations + When there is a problem very difficult to check for errors > > Because there are many disadvantages of this network should in fact rarely used c) LAN play style STAR (phenotype stars)
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   LAN play style STAR (star)
   
   
   
   - LAN play style star needs a middleware such as Hub or Switch, the computer is connected to the intermediate device.(Now mainly used Switch) - Pros : + phenotype Network star game (STAR) for the fastest speed + When the network cable is broken usually just ruin the connection of a computer, other machines still activities. + When a network error, it is easy to check the repair. - Cons : + Style stamp cost wireless networks and network devices more expensive middlemen.>>> Do more network star outstanding advantages, it is used extensively in practice
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   


4. The equipment necessary to connect the LAN type STAR - STAR LAN play style (star) has many advantages such as high speed, easy maintenance and repairs, they are mainly used in practice. 
   - To the computer can be connected together to form a LAN type stars, we need to prepare the following accessories: a) The computer must be installed Net Card and install full driver (Drive)
   
   
   
   
   
   
   
   
   Net Card for LAN connection types STAR 
   
   b) Prepare an intermediate devices such as switches from 4 to 24 ports (depending on how much needs to connect to your computer)
   
   
   
   Switch 8 port can connect to a computer 8
   
   
   
   
   c) wire from the switch to the network to match the computer.
   
   
   
   - You have to use the wireless network with the colored wire strands 8 as follows:
   
   
   
   
   
   
   
   
   

   - Orange - White Orange - Blue  - White  Blue - Lo - White neglect - Brown - WhiteBrown

   
   
   
   Wire to networking style star STAR
   
   
   d) Investment trouble keeping RJ45 network cable to connect to your computer
   
   
   
   Sprinkle RJ45 network cable to click when connecting to the Net Card 
   
   e) A tool pliers to press the strings as network
   
   Pliers to press the wireless network


5. Some concepts as LAN connection types STAR 
   a) Standard wiring.
   
   - Standard wiring is color wires arranged in a specified order to prevent interference and increase the transfer rate. - There are two wiring standards are standards T568A and T568B standards, these standards have wiring sequence is as follows:
   
   
   
   
   
   
   
   
   
   
   Standard Standard T568B T568A
   
   
   
   b) parallel wire and wire game crossover
   
   - This game is parallel sprinkle both ends of a rope is played according to T568A or T568B same standards.
   
   
   
   -Parallel, both ends are played T568B standard
   
   
   - Wire cross the two ends of a rope trouble using two different standards, this first game, the other end T568A standard game T568B standard
   
   
   
   
   Wire cross, a standard first league game T568A other end T568B standard
   
   
   
   
   
   
   
   
   
   
   - From PC to PC using a crossover cable
   
   
   
   
   
   - From ADSL Modem Switch to using a parallel cable (straight cable)
   
   
   - Switch to the computer from the parallel cable (straight cable)