Computer Fundamental
Easy
Which port does not exist in computer?
Tap an option to check yourself.
Answer: D) No one of the above
All the listed ports exist (or have existed) on computers:
USB – Universal Serial Bus ports are standard on virtually all modern computers.
Parallel – Parallel ports (e.g., LPT1) were widely used for printers and other devices, especially on older PCs.
COM 1 / COM 2 – These are serial ports (RS-232), commonly present on older systems and still found (or emulated) on many computers.
Since none of the options A–C refer to a nonexistent port, the correct choice is D.