Computing

Computing

1. Networks

   • Data packets
     • A data packet is a file broken down into small chunks which so it can be sent over a network
     • We need data packets so we can send large amounts of data
   • A computer network, or data network, is a digital telecommunications network which allows nodes to share resources
   • WAN/LAN
     • Local area network is a network that transmits data over a small area such as a school or home
     • Wide area network is a network that extends over a large area like a country or the whole world
   • Virtual networks
     • A virtual network is in a LAN and allows certain users in the network to have access to things others might not
     • They share the same network hardware and cabling but the software determines what you can and can't see
     • Makes it easier to maintain a network and leads to a flexible network setup
   • Bandwidth
     • It is the maximum rate of data transfer across a given network