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NETWORK - Coggle Diagram

- - - - any type of hardware capable of transmittting data, instructions and information between a sending device and a receiving device.
    - - Modem
        
        Digital
        
        device that sends and receives data and information to and from a digital line
        
        Wireless
        
        devices that uses a mobile service provider"s network to connect to the internet wirelessly from a computer or mobile device.
        
        Dial-up
        
        device that converts digital signals to analog signals to digital signals, so that data can travel along an analog phone line.
      - NIC vs wireless NIC
        
        wireless NICs are designed for Wi-Fi connections and often have an antenna to provide better wireless reception for the computer. Older wireless cards have PCI connections while most modern wireless NICs connect to a PCI Express slot.
        
        device that enables a computer or device that does not have built-in networking capability to access a network.
      - Hub vs switch
        
        receives data from many directions and then forwards it to one or more destinations
        
        a device that provides a central point for cables in a network
      - Router
        
        device that connects multiple computers or other routers together and transmits data to its correct destination on a network.
      - Repeater
        
        device that forwards wireless signals from the router to cover a larger area, such as multiple floors of a house
      - WAP
        
        a central communications device that allows computers and devices to transfer the data wirelessly amomng themselves or to transfer data wirelessly to a wired network.
  - - - Materials or substances capable of carrying one or more communications signals.
    - - Twisted-pair
        
        The wires are twisted together to reduce noise. Noise is an electrical distubance that can degrade communications.
      - Coaxial
        
        be cabled over
        longer distances than twisted-pair cable.
      - Fibre-optic
        
        consists of dozens or hundreds of thin strands of glass or plastic that use light to transmit signals.
    - - Infrared
        
        sends siignals using infrared light waves.
      - Broadcast radio
        
        distibutes radio signals through the air over lomg distances and short distances.
      - Cellular radio
        
        is a form of broadcast radio that is used widely for mobile
        communications, specifically wireless modems and cell phones
      - Microwaves
        
        provide a high speed signal transmisson
        
        it can trasmit data at rates up to 4,5000 times faster than a dial-up modem
        
        it use line-of-sight transmission
      - Communications satellite
        
        receives microwave siignals from an earth-based station
  - - - a point in a network or diagram at which lines or pathways intersect or branch
    - - laptop
      - printers
      - modem
- - - - Users connected to a network have access to software on the network.
    - - each computer on the network can have access to hardware on the network
        such as laser printer