68. An essential difference between the operating system that runs a typical desktop computer and the operating system that runs a typical PDA is that ....... A.the desktop OS has a graphical user interface whereas the PDA OS does not. B.the desktop OS can run several programs simultaneously whereas the PDA OS cannot. C.the desktop OS manages hardware resources whereas the PDA OS does not. D.the desktop computer has an OS whereas a PDA does not. E.None of these
Option B Solution: An essential difference between the operating system that runs a typical desktop computer and the operating system that runs a typical PDA is that the desktop OS can run several programs simultaneously whereas the PDA OS cannot.
