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A processor with a 16-bit address bus can address at most

  • A.1048576 locations
  • B.65536 locations
  • C.16384 locations
  • D.32768 locations

Answer: B

Two to the sixteenth is 65536, so 64 kibibytes if each location holds a byte. Extending the reach beyond that without more address lines needs bank switching, which is why the 8-bit generation was full of paging schemes.

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