It seems strange that the author has not met a single one that understands that concept since it is quite basic. I am guessing he just is bad at interviewing and asks trick questions till he meet someone who know the interviewing game inside out.
Voltage regulators missing capacitors at input/output
Missing pull-up/pull-down resistors on digital buses
Missing decoupling capacitors"
I mean ... looking at a schematic how should you know that the voltage regulator doesn't have internal caps without seeing the specs? Missing pullups? How do you know those are not internal? It is stupid.
Examples he gives:
"Current limiting resistors missing (BJTs, diodes, etc.)
Shorting a potentiometer node to a rail
Voltage regulators missing capacitors at input/output
Missing pull-up/pull-down resistors on digital buses
Missing decoupling capacitors"
I mean ... looking at a schematic how should you know that the voltage regulator doesn't have internal caps without seeing the specs? Missing pullups? How do you know those are not internal? It is stupid.