Crossword Puzzle

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Across
  1. 3. enables a computer to transmit data over telephone lines.
  2. 5. it is a wireless media
  3. 6. A network of different devices, called it
  4. 7. device used to connect two LANs
Down
  1. 1. it is a computer on the network
  2. 2. the art of connecting different computers.
  3. 4. it is a set of rules that governs data communication.