Presentation of Information Technology Presented To: Sir Salman Ashar
Mirza Ali Raza. 90
Syed Ali Kamran. 50
M.Jafar Tayar. 48
Hussain zain-ul- abiden. 85
Amjad Abbas. 71
Samiullah warrich. 62
Raja shoaib Azam 59
Network: A computer network is a system for communication between computers. Components of Networks:
Local Area Network: A local area network is data communication system in a limited geographical area. Like a home, office, or small group of buildings
Metro-Politan Area Network: A Metro-politan area network is a network designed to extend over an entire city.
Wide Area Network: A wide area network provides long distance transmission of data over a large geographical areas Comprising a country,a continent or the whole world. The most well-known example of a WAN is the Internet.
Network Topology: . The logical layout of the cables and devices that connects the nodes of a computer.
Types of Topologies:
Bus Topology: All devices are connected to a central cable, called the bus or backbone .
Star Topology: All devices are connected to a central hub.Nodes communicate across the network by passing data through the hub.
Ring Topology: All devices are connected to one another in the shape of a closed loop, so that each device is connected directly to two other devices, one on either side of it.
Mesh Topology: In a true mesh topology every node has a connection to every other node in the network
Tree Topology: Tree topologies integrate multiple star topologies together onto a bus.
Hybrid Topology: A hybrid topology is always produced when two different basic network topologies are connected. Two common examples for Hybrid network are: star ring network and star bus network.
Linking devices: A type of linking mechanism needed to interconnect at least two computers.They are used to create a network. For example Cables,Switches or Hubs.