Crossword 6C

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Across
  1. 1. advanced
  2. 3. a secret word or code
  3. 4. to store computer data
  4. 6. to make a duplicate
  5. 7. round door handle
  6. 8. to make sth ready
Down
  1. 1. an unknown person
  2. 2. a spare copy of a file
  3. 4. find out
  4. 5. a small computer camera