Networks

• A network refers to a group of two or more computing devices that are connected by a communication medium allowing the computers to communicate electronically
• The main types of networks include LAN, WAN, MAN, PAN
• a wired network is a network that uses a physical media to transfer data from one node to another
• A wireless network consists of transmitters and receivers ,nodes connect wirelessly to these transmitters and receivers to complete the network
• network topology is the way that devices on a network are arranged and how they communicate with each other.
• one big disadvantage of star topology is that when the switch fails the entire network is unusable
• In a Star network the devices are connected to a central node called a switch
• two advantages of a Star network are:

  You can easily add a new device

  When one connected device breaks it doesn't affect the rest of the network.
• Bandwith is the amount of data that can be sent over a network at a specific amount of time
• location based systems refers to several different technologies that make use of geographical positioning to customize a customer's experience