The keyboard key combination ALT + F4 in microsoft windows will

 Select two stages of booting from the following list:

i. Power on Self Test;

ii.  Loading of Operating System; 

iii.  Loading of e-mails;

iv.  Start in safe mode.

iv. Save all active files

In number system ,base 16 is called ?

127\(_{16}\) to  50A\(_{16}\)

The octal fraction 0.65 converts to binary as