Multiple choice

COM port has �

  1. 9 pins

  2. 10 pins

  3. 11 pins

  4. 12 pins
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A Correct answer
Explanation

Standard COM (serial) ports use the DE-9 connector, which has 9 pins (9 male pins on the cable). This is the industry standard for RS-232 serial communications on PCs. Earlier versions used DB-25 (25 pins), but the 9-pin DE-9 became the standard for PC COM ports. The other options (10, 11, 12 pins) are incorrect.

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