Topic 5: Network & Technologies Flashcards
What is a computer network
A et of computers linked together and are capable of sharing resources, files, applications and can communicate
What is a LAN and function
Local Area NetworkLANs tend to use inexpensive hardware such as adaptors hubs and ethernet cables.A LAN transmits data to other devices within the same network.A LAN tends to be owned by one organisation
What is a WAN & function
Wide area network, covers a larger geographical area on a global scale, and can use fibre optic and satellite for transmissionRelatively expensive with regard to hardware such as satellite transmission and routers.A WAN may be used by many organisations.Because WAN uses various transmission methods as the devices it transmits are far apart
Advantages & Disadvantages of networks
Expensive peripherals can be shared such as printers and scanners.Users can share data/filesUser can log on at any workstation to access their files.Updates can be carried out at one timeDisadvantagesExpensive to installRequire specialist knowledge to operate/manage themServer failure may mean computers do not operateWhen a virus is installed on a network it can quickly spread.
What is the world wide web
An application that runs on the internet
What is the internet
A network of interconnected networks which provides the communication links of data to be transferred between devices
What is internet of things
Physical devices connected to the internet. Devices will be able to identify themselves to other devices. They use unique identifiers to communicate or transfer dataAdvajt
Advantages & Disadvantages internet of things
Increased convenience of users as they can monitor and control devices remotely or autmate avtivities that they previously have carried out manuallyIncreased potential for hackers to attempt to acess devices in home
