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What is the default I/O range for COM1?

  1. 3F8-3FF

  2. 2F8-2FF

  3. 378-37F

  4. 220-22F

The correct answer is: 3F8-3FF

The default I/O range for COM1 is 3F8-3FF. This represents the range of input/output addresses that are used by the hardware to communicate with the computer. The other options are incorrect because - Option B (2F8-2FF) is the default I/O range for COM2. - Option C (378-37F) is the default I/O range for LPT1 (printer port) and is not related to COM1. - Option D (220-22F) is the default I/O range for game ports and is not related to COM1.