7-……is respected the operating system.
a-windows.
b-excel.
c-norton antivirus.
d-power point.
8-……mode that shuts down the computer,computer starts againg.
a-turn off.
b-standby.
c-restart.
d-cancel.
9-the computer system consists of…….
a-hardware and software.
b-data processing.
c-printers.
d-mouse and key board.
10-which is not an office tools:
a.ms windows.
b-ms power point.
C.ms excel.
d-ms word.