I was doing some of the interrupts question online and found this Multiple choice questionHow can the processor ignore other interrupts when it is servicing onea) By turning off the interrupt request lineb) By disabling the devices from sending the interruptsc) BY using edge-triggered request linesd) All of the aboveThe answer was (D) but I wonder how are we allowed to turn off the interrupt request line ? What if we have a high priority interrupt that comes after ? We just ignore it ?I mean (a) seems counter intuitive for me, because I don't think under any circumstances we should be turning off the interrupt request line ? 
Can the processor just turn off the interrupt request line?
computer architecture;operating systems;process scheduling