The abbreviation I/O means (a) ___ and (b) ___. Plug-in compartments allow I/O modules to be easily connected and replaced. (True or False) To operate the program, the controller is placed in the ___...

Plug-in compartments allow I/O modules to be easily connected and replaced. (True or False)

To operate the program, the controller is placed in the ___ mode.

If there is no continuous logic path from left to right on the program rung, the output coil status is set to ___.