The Internet and Education

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Across
  1. 3. Network that covers wider area
  2. 7. Secretive Country
  3. 9. Network that covers limited area
  4. 10. Acceptable behavior for the Internet users
  5. 11. A pool of computer devices connected to each other
  6. 12. A device that modulates and demodulates
Down
  1. 1. One of the transmission signals
  2. 2. This network of networks
  3. 4. National Science Foundation Network
  4. 5. The first network created successfully
  5. 6. A form of communication at a distance
  6. 8. Traditional transmission signal (using sound signal)