Technology

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Across
  1. 3. firewall in computer is used for
  2. 6. 'TMP'extension refers usually to what kind of file
  3. 9. who created pretty good privacy(PVC)
  4. 10. what is part of a database that holds only one type of information
  5. 11. a given signal's second harmonic is twice the given signals ___frequency
Down
  1. 1. where is the headquter of Microsoft office located
  2. 2. .gif is an element of
  3. 4. first computer is known as
  4. 5. number of layers in OS(open systems Interconnection )model
  5. 7. MAC operating system is developed by which company
  6. 8. which one is the first search engine in internet
  7. 10. which is a type of electrically-erasable programmable read only memory