1. The brain of any computer system is
A. ALU
B. Memory
C. CPU
D. Control unit
E. None of the above
2. _______ are software which is used to do particular task.
A. Operating system
B. Program
C. Data
D. Software
3. While working with Ms-Dos which command transfers a specific file from one disk to another?
a. Copy
b. Diskcopy
c. Time
d. Rename
4. Which command creates a directory or subdirectory?
a. Dir
b. Mkdir
c. Md
d. Both b and c
5. Which command is used to delete the directory that is empty?
a. Del *.*
b. RD
c. Erase
d. MD