71) In computer, spelling mistake is corrected by:
(A) Fresh correct
(B) Filter
(C) Auto correct
(D) None
72) Unauthorized access to your computer is prevented by:
(A) Authentication
(B) Encryption
(C) Authorization
(D) None
73) Control C is :
(A) Fix
(B) Cut
(C) Bold
(D) Copy
74) PDF stands for:
(A) Portable Downward Fold
(B) Portable Document Format
(C) Portable Down Format
(D) None
75) UPS stands for:
(A) Under Post System
(B) Uncontrol Police System
(C) Uninterruptible Power Supply
(D) None
76) What is the best unit of data and external storage device?
(A) Bytes
(B) Hertz
(C) Bite
(D) None
77) Which is read only memory storage device?
(A) GUP
(B) CD Rom
(C) Hard Disk
(D) None of above
78) A pixel is:
(A) Picture stored in secondary memory
(B) Smart Picture
(C) Computer program
(D) None of above
79) A cursor is a:
(A) Thin blinking line
(B) Pointing device
(C) Pixel
(D) None of above
80) DMA stands for:
(A) Direct memory access
(B) Direct memory allocation
(C) Direct module access
(D) Direct memory access