Computing Crossword Puzzle

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Across
  1. 1. The primary component of a computer that processes instructions
  2. 5. The main printed circuit board in general-purpose computers and other expandable systems
  3. 6. A group of computers that use a set of common communication protocols over digital interconnections for the purpose of sharing resources
Down
  1. 2. A string of characters usually used to confirm a user's identity
  2. 3. A global computer network providing a variety of information and communication facilities
  3. 4. A type of non-volatile memory used in computers and other electronic devices
  4. 7. The super-fast and temporary data storage space that a computer needs to access