Which data communication method is used to send data in both directions at the same time?

Match the following.
A. Input device                                                  P. ROM
B. Processing device                                       Q. Touch Screen
C. Storage Device                                             R. Printer
D. Output Device                                              S. Flash Memory

Ctrl + page up will take you to _______

Which of the following function key activates the speller?

Which key on a windows keyboard sets to full-screen mode in most browsers? 

is a form of permanent memory that holds all the instructions the computer needs to start up and does not get erased when the power is turned off. 

Compiler in computer system is a : 

Virus usually comes from the floppy disk left in the floppy disk drive.