Top 1000+ Solved Important Computer MCQs For Competitive Exams part-1 MCQ Questions Answer
Q. Before you stored anything on a disk, it has to be
a. cleansed
b. formatted
c. initialized
d. either (a) or (b)
e. None of these
Q. What is the name of the screen pointing device that rolls on bearings and has one or more buttons on its top?
a. Track ball
b. Mouse
c. Light pen
d. Joy-stick
e. None of these
Q. Character readers are those devices whichread the characters printed on the source documents and then convert them directly into computer-usable input.
a. OCR
b. MICR
c. OMR
d. LCD
e. None of these
Q. All calculations are performed and all comparisons are made in unit
a. control unit
b. arithmetic-logic unit
c. central processing unit
d. primary storage unit
e. None of these
Q. A certain computer hardware component does not process the data itself but acts as a central nervous system for other data manipulating components. What is it called?
a. ALU
b. RAM
c. Control Unit
d. Secondary storage
e. None of these
Q. A logic is an electronic circuit which
a. makes logic decisions
b. allows electron flow only in one direction
c. works on binary algebra
d. works on float numbers
e. None of these
Q. A code used for standardizing the storage and transfer of information amongst various computing devices is called
a. CRT
b. CPU
c. ASCII
d. Dvorak
e. None of these
Q. As compared to a magnetic tape, the main advantage of magnetic disk is its
a. rigidity
b. direct access
c. low cost
d. high packing density
e. None of these
Q. What is the size of the optical compact disk which is used for recording high quality music?
a. 4.7 inch
b. 3.5 inch
c. 5.5 inch
d. 8.7 inch
e. None of these
Q. Why do magnetic tape drives for minicomputers use vacuum columns?
a. For quick acceleration and deacceleration of the tape
b. For immediate starting and stopping of the tape
c. To avoid stress in the tape
d. To provide extra tape length
e. None of these
Q. What is the name of the visible silver rectangle which separates the take-up portion of the magnetic tape from the data recording portion?
a. Load maker
b. Load marker
c. Tape separator
d. Tape marker
e. None of these
Q. The data on the tracks on a magnetic disk are written as
a. up or down
b. tiny magnetic spots
c. 0 or 1
d. high or low voltage
e. None of these
Q. Which memory is nonvolatile and may be written only once?
a. RAM
b. EE-ROM
c. RAM
d. PROM
e. None of these
Q. Which of the following statements is wrong?
a. An EPROM can be programmed, erased and reprogrammed by the user with an EPROM programming instrument
b. Magnetic tape is non volatile
c. Magnetic core and semiconductor memories
d. RAM is a type of volatile memory
e. None of these
Q. For a memory system, the cycle time is
a. same as the access time
b. longer than the access time
c. shorter than the access time
d. submultiple of the access time
e. None of these