Computer System and Operating System MCQ Revision 4 sept 2023

 

Multiple Choice Questions

Question 1.
A computer is free from tiredness, monotony, etc., reflects which characteristic?
(a) High speed
(b) Versatile
(c) Accuracy
(d) Diligence
Answer:
(d) Unlike human beings, a computer is free from monotony, tiredness, lack of concentration etc. and can work for hours without creating any errors. This characteristic of computer is known as diligence.

Question 2.
The first computer mouse was invented by
(a) Christopher Sholes
(b) C.B. Mirick
(c) Douglas Engelbort
(d) Russel A Kirsch
Answer:
(c) The first computer mouse was invented by Douglas Engelbart at Stanford Research Centre in 1960s.

Question 3.
Out of the following, whom do you think is the most probable user of a Light Pen?
(a) Computer Programmer
(b) Graphic Designer
(c) Journalist
(d) Scientist
Answer:
(b) Light pen is useful for graphic designer as it is useful for identifying a particular location on the screen.

Question 4.
Input device used to make a digital copy of a photograph.
(a) Graphics Tablet
(b) Scanner
(c) MICR
(d) OMR
Answer:
(b) Scanner is an input device that is used to make a digital copy of a photograph. It converts the image or text into a digital file.

Question 5.
……….. is a medium size scanner which has rolling drum to scan your documents.
(a) Drum
(b) Handheld
(c) Flatbed
(d) Roller
Answer:
(a) Drum

Question 6.
Large amount of cheques are processed by using
(a) OCR
(b) MICR
(c) OMR
(d) All of the above
Answer:
(b) Large amount of cheques are processed by the MICR (Magnetic Ink Character Recognition). It can read characters that are printed using a special magnetic ink. It is mostly used in banks.

Question 7.
What does OCR stand for?
(a) Optical Character Reader
(b) Optical Character Recognition
(c) Operational Character Reader
(d) Only Character Reader
Answer:
(b) OCR stands for Optical Character Recognition used as an input device in a computer system.

Question 8.
Input device used in evaluating answer sheets by a teacher.
(a) OCR
(b) OMR
(c) MICR
(d) Barcode
Answer:
(b) OMR (Optical Mark Recognition) is the process of capturing human marked data from document forms such as surveys and test.

Question 9.
Which type of monitor works in the same way as a television?
(a) CRT
(b) LCD
(c) LED
(d) 3-D
Answer:
(a) CRT monitor works in the same way as a television.

Question 10.
Dot Matrix is a type of
(a) Tape
(b) Disk
(c) Printer
(d) Bus
Answer:
(c) Dot matrix is a type of impact printer that prints one character at a time.

Question 11.
Output device used to generate the long map of building and shopping malls.
(a) Dot-matrix
(b) Inkjet
(c) Plotter
(d) Deskjet
Answer:
(c) Plotter is a computer hardware device similar to a printer that uses a pen, pencil, marker or other writing tools to make a design.

Question 12.
It is responsible for all numerical and logical calculations.
(a) CPU
(b) CU
(c) MU
(d) ALU
Answer:
(d) ALU is a digital circuit in which numerical and logical operations are defined.

Question 13.
Which of the following does not represent an I/O device?
(a) Speaker
(b) Plotter
(c) Joystick
(d) CU
Answer:
(d) CU is used to co-ordinate the input and the output devices of a computer system.

Question 14.
Control Unit is called the ………….. of a computer system.
(a) heart
(b) nerve centre
(c) primary memory
(d) All of these
Answer:
(b) Nerve centre because it controls the overall processing of a computer system.

Question 15.
The largest unit of memory is
(a) Terabyte
(b) Petabyte
(b) Exabyte
(d) Geopbyte
Answer:
(d) Geopbyte is the highest memory measurement unit.
It is equal to 1024 Brontobyte, (nearly 2,on bytes).

Question 16.
Out of these which one is a volatile memory?
(a) ROM
(b) RAM
(c) Floppy
(d) DVD
Answer:
(b) RAM is a volatile memory that means data remains stored in RAM only when power supply is there and computer is switched ON but as soon as the computer is turned OFF, the contents of RAM get erased.

Question 17.
Which of the following is an example of non-volatile memory?
(a) ROM
(b) RAM
(c) LSI
(d) VLSI
Answer:
(a) Among given options, ROM is the memory that retains its contents even after the interruption of power so, it is a non-volatile memorv.

Question 18.
…… memory is used to store large amount of information permanently.
(a) RAM
(b) ROM
(c) Secondary
(d) Primary
Answer:
(c) Secondary memory is used to store large amount of information permanently.

Question 19.
Which of the following statement is false?
(a) Secondary storage is faster
(b) Primary storage is both volatile and non volatile in nature.
(c) When the computer is turned OFF, data and instructions stored in RAM are erased
(d) None of the above
Answer:
(a) Secondary memory is the slowest and cheapest form of memory. It cannot be processed directly by the CPU and it must be first copied into RAM.

Question 20.
The concentric circles on the floppy disks are further divided into
(a) tracks
(b) sectors
(c) cylinders
(d) None of these
Answer:
(b) The concentric circles on the floppy disks are known as tracks. These tracks are further divided into pie-shaped sections known as sectors.

Question 21.
Which of the following storage device can be used for storing large backup data?
(a) Floppy disks
(b) Hard disk
(c) Magnetic tapes
(d) None of these
Answer:
(c) Magnetic tape is used with larger computers such as the mainframe, where huge amount of data is kept stored for longer period of time.

Question 22.
The ……… offers more than five times the storage capacity of traditional DVDs.
(a) Compact disc
(b) Pen drive
(c) Blu-ray disc
(d) Ext-DVD
Answer:
(c) Blu-ray disc can hold almost 5 times more data than a single layer DVD.

Question 23.
Pen drive is also known as
(a) Flash drive
(b) Data stick
(c) Thumb drive
(d) All of the above
Answer:
(d) A USB flash drive, data stick, thumb drive or pen drive is a portable drive that connects to a computer’s USB port.