LAN

LAN

1. what is needed

   • network adapter
     • A network adapter is the component of a computer's internal hardware that is used for communicating over a network with another computer. It enable a computer to connect with another computer, server or any networking device over an LAN connection. A network adapter can be used over a wired or wireless network.
   • network software
     • Most LANs connect workstations and personal computers. Each node (individual computer) in a LAN has its own CPU with which it executes programs, but it also is able to access data and devices anywhere on the LAN. This means that many users can share expensive devices, such as laser printers, as well as data.
   • wired network cable
     • to provide faster connection rather than wireless that provides 250 mbs but wired provides 750mbs
   • router
     • A router is a networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the Internet. ... A packet is typically forwarded from one router to another router through the networks that constitute an internetwork until it reaches its destination node.
   • cable connectors
     • An Ethernet crossover cable is a type of twisted pair Ethernet cable used to connect computing devices together directly that would normally be connected via a network switch, Ethernet hub or router, such as directly connecting two personal computers via their network adapters.
   • power supply
     • Power over Ethernet (PoE) is a way to power devices with an Ethernet cable connected to a Local Area Network (LAN). Instead of using an adapter or outlet to power your device, PoE devices can receive electrical current directly from an Ethernet cable that is connected to a LAN.

2. what is it

   • its a computer network that interconnects computers within a limited area such as a school,lab,university,campus or office building.

3. advantages

   • Workstations do not necessarily need their own hard disk or CD-ROM drives which make them cheaper to buy than stand-alone PCs.
     • When a new version comes out, it only has to be loaded onto the server instead of onto every workstation.
       • User can save their work centrally on the network’s file server. This means that they can retrieve their work from any workstation on the network.
       • one advantege is that loads of devices can connect and be monitored whenever

4. disadvantges

   • High Setup Cost Although the LAN will save cost over time due to shared computer resources but the initial setup costs of installing Local Area Networks is high. This is because any organization that will setup a network, will have to purchase necessary hardware equipment for networking.
     • Data Security Threat Unauthorized users can access important data of an organization if centralized data repository is not secured properly by the LAN administrator. LAN Administer is responsible for the security of the whole data resource in an organization.
     • Covers Limited Area Local Area Network covers a small area like one office, one building or a group of nearby buildings.
       • one disadvantege is that cant reach so far out so have to be withuin connectoin range