Study

Network

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  • terminator:
    ending to a network cable that absorbs the signal to stop it bouncing back
  • MAC address:
    number programmed into a network interface card that identifies each device on a network
  • router
    hardware device that connects networks together
  • Transmission Control Protocol/Internet Protocol (TCP/ IP):
    protocol for transferring data between devices
  • IP address:
    a unique number assigned to a computer on a network
  • network switch:
    switch that connects devices together to form a wired network
  • colliding:
    when data 'bumps into' other data, which often causes errors or lost data
  • protocol:
    agreed set of rules that computers follow to communicate with each other over a network
  • domain name:
    part of a URL that specifies the location on the internet, e.g. google.com
  • file server:
    server that stores users' files and enables them to be shared on a network
  • network topology
    diagram that shows how devices in a network are connected to one another, and shows the network hardware
  • network interface card (NIC):
    every device that connects to a network includes a NIC, which has a pre-programmed MAC address so that it can be identified on the network
  • star topology:
    network in whicheach device is connected separately to a central switch
  • ring topology:
    network in which all devices are connected together to form a ring
  • firewall:
    restricts the network traffic entering and exiting a network, to ensure that it is safe
  • bus topology:
    network in which all devices are connected together via a main cable running down the centre of the network
  • hardware
    physical parts of a computer that you can touch and see, e.g. the processor, storage devices, input devices, output devices
  • wireless access point:
    allows devices to connect to a network using Wi-Fi
  • network traffic:
    amount of data travelling through a network, split into small parts for transmission
  • scalability:
    capacity to make something larger, e.g. a network enlarged with more devices
  • file server:
    server that stores users' files and enables them to be shared on a network
  • cyber-attack:
    attempt to gain unauthorised access to a network, to damage or destroy a computer system
  • Hypertext Transfer Protocol (HTTP):
    set of rules for communicating with web servers
  • data packet:
    small unit of data that is packaged to be sent across a network
  • Hypertext Transfer Protocol Secure (HTTPS):
    set of rules for communicating with web servers, with added encryption to improve security
  • firewall:
    restricts the network traffic entering and exiting a network, to ensure that it is safe