data exchange

data exchange

1. audio

2. images

3. video

4. data types

   • video
   • text
   • voice
   • images
   • audio

5. voice over protocol VOIP

   • hardware needed
     • voice communication
     • webcam
     • speaker or headphone output
     • broadband connection
   • what is VOIP used for
     • Web meetings
     • Video Conferencing
   • VOIP system
     • encoding and decoding

6. wireless network

   • cheap
   • dont have to be glued to the desk

7. UTP / STP

   • Unshielded twisted pair cables
   • advantage
     • very low cost
   • disadvantages
     • slow

8. Coaxial

   • Solid wire core separated from a copper-braided outer cable by a plastic insulation sheath
   • advantages
     • fast and reliable
   • disadvantages
     • Complex connection

9. infred

   • Short range data transmissions using infrared light
   • advantages
     • Reliable
   • disadvantages
     • Short range

10. modes of transmition

    • Simplex Transmission
      • one way only
    • Full -Duplex Transmission
      • bloth ways
    • Half-Duplex Transmission
      • two ways only

11. Parallel Ports

    • devices
      • computer monitor
      • computer mouse

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