hardware of the internet

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Across
  1. 4. a system that connects all the local computers
  2. 7. allows devices to connect to the internet
  3. 9. twisted wires improving electromagnetic compatibility.
  4. 10. a set of rules and guidelines for communicating data
  5. 12. one million bits used for measuring amount of data
Down
  1. 1. the telegraph network
  2. 2. computing model that stores data on the Internet
  3. 3. glass core through which light signals can be sent
  4. 5. organises communication between computer networks
  5. 6. a network security device
  6. 8. internet provider service
  7. 11. a delay before the transfer of data