Networking crossword puzzle

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Across
  1. 4. brains in the computer
  2. 5. hardware that connects devices on a network
  3. 7. a device or cluster that takes requests
  4. 8. one of the biggest cpu and component companies
  5. 9. periferal used to type
  6. 10. device that guides the route
Down
  1. 1. periferal used to click
  2. 2. a computer used by one user only
  3. 3. science that studies complex networks
  4. 6. the spine of the computer