“Hexadecimal uses digits that more closely resemble our usual base-10 counting system and it's therefore easier to decide at a glance how big a number like e7 is as opposed to 11100111. Higher information density. With 2 hexadecimal digits, we can express any number from 0 to 255.”
A. defragging your hard drive
The UAC is on by default. So, you don't need to turn it on unless someone else turned it off.
The UAC has four modes.
The lowest mode is the off position. If the UAC is off, no UAC prompt will pop up when doing administrative tasks.
