26.) Which command is used to see the sub-directory structure of drive?
A.) Tree
B.) List
C.) Subdir
D.) Subtree
Answer Option: A
27.) In wildcard specification `?' is used as replacement for
A) One character
B) Two character
C) Three character
D) None of the above
Answer Option: A
28.) Memory management is:
A.) not used in modern operating system
B.) replaced with virtual memory on current systems
C.) not used on multiprogramming systems
D.) critical for even the simplest operating systems
Answer Option: B
29.) Which of the following commands is given to reboot the Computer?
A.) Ctrl + Alt + Del
B.) Ctrl + Alt + Tab
C.) Ctrl + Shift + Del
D.) Ctrl + Alt + Shift
Answer Option: A
30.) What is the name given to the organized collection of software that controls the overall operation of a computer?
A.) Controlling system
B.) Peripheral system
C.) Operating system
D.) Working system
Answer Option: C
