Vaidikalaya

MCQ On Components of A Computer System

Q1. Which of the following is not a characteristic of a computer?.
  1. Versatility
  2. Accuracy
  3. Diligence
  4. I.Q.

Answer: d, I.Q.

Solution: The Computer system has no I.Q. of its own.

Q2. Which of the following is the smallest unit of data in a computer?.
  1. Bit
  2. KB
  3. Nibble
  4. Byte

Answer: a, Bit

Solution: A bit is defined as the smallest unit of data in a computer system. It is used as a short form of Binary Digit. A bit can have only two values 0 or 1.

Q3. Which of the following unit is responsible for converting the data received from the user into a computer understandable format?.
  1. Output Unit
  2. Input Unit
  3. Memory Unit
  4. Arithmetic & Logic Unit

Answer: b, Input Unit

Solution: The Input Unit converts the data, which the user enters into a language that the computer understands, i.e. it converts the data into binary format. The Output Unit is responsible for giving the results in a user-understandable format. The Storage Unit is responsible for storing the data after immediate results of processing whereas; the ALU is responsible for various arithmetic and bitwise operations.

Q4. Which of the following is not a type of computer code?.
  1. EDIC
  2. ASCII
  3. BCD
  4. EBCDIC

Answer: a, EDIC

Solution: There is no coding scheme like EDIC. EBCDIC stands for Extended Binary Coded Decimal Interchange Code. BCD stands for Binary Coded Decimal. ASCII stands for American Standard Code for information interchange.

Q5. Which of the following part of a processor contains the hardware necessary to perform all the operations required by a computer?.
  1. Controller
  2. Registers
  3. Cache
  4. Data path

Answer: d, Data path

Solution: A processor is a part of the computer which does all the data manipulation and decision making. A processor comprises of:

Q6. Which of the following is designed to control the operations of a computer?.
  1. User
  2. Application Software
  3. System Software
  4. Utility Software

Answer: c, System Software

Solution: Software is basically classified into two: System and application. System Software is designed to control the operations and extend the processing capability of a computer system.

Q7. Which of the following device use positional notation to represent a decimal number?.
  1. Pascaline
  2. Abacus
  3. Computer
  4. Calculator

Answer: b, Abacus

Solution: Abacus was used to do arithmetic calculations around 2500 years ago. Pascaline was the pascal’s calculator by Blaise Pascal invented for doing laborious calculations.

Q8. Which of the following are physical devices of a computer?.
  1. Hardware
  2. Software
  3. System Software
  4. Package

Answer: a, Hardware

Solution: Hardware refers to the physical devices of a computer system. Software refers to a collection of programs. A program is a sequence of instructions.

Q9. Which of the following defines the assigned ordering among the the characters used by the computer?.
  1. Accumulation
  2. Sorting
  3. Collating Sequence
  4. Unicode

Answer: c, Collating Sequence

Solution: Collating sequence is the term used for ordering among characters. It may vary depending upon the type of code used by a computer.

Q10. Which of the following devices provides the communication between a computer and the outer world?.
  1. Compact
  2. I/O
  3. Drivers
  4. Storage

Answer: b, I/O

Solution: The I/O i.e. the input/output devices provide a means of communication between the computer and the outer world. They are often referred to as peripheral devices sometimes.

Q11. Which of the following are the input devices that enable direct data entry into a computer system from source documents?.
  1. System Access devices
  2. Data acquiring devices
  3. Data retrieving devices
  4. Data Scanning devices

Answer: d, Data Scanning devices

Solution: They are referred to as data scanning devices. They eliminate the need to key in text data into the computer. It demands the high quality of input documents.

Q12. Which of the following is the device used for converting maps, pictures, and drawings into digital form for storage in computers?.
  1. Image Scanner
  2. Digitizer
  3. MICR
  4. Scanner

Answer: b, Digitizer

Solution: A digitizer serves the purpose given in the question. Digitizers are generally used in the area of Computer-Aided Design by architects and engineers to design cars, buildings, etc.

Q13. Which of the following can access the server?.
  1. Web Client
  2. User
  3. Web Browser
  4. Web Server

Answer: a, Web Client

Solution: Any computer that has access to the webserver is called the web client. A web server is any computer that uses the HTTP protocol.

Q14. Which of the following is known as the language made up of binary-coded instructions?.
  1. High level
  2. BASIC
  3. C
  4. Machine

Answer: d, Machine

Solution: The language made up of binary-coded instructions built into the hardware of a particular computer and used directly by the computer is machine language.

Q15. Which of the following is not a type of computer on the basis of operation?.
  1. Digital
  2. Analog
  3. Hybrid
  4. Remote

Answer: d, Remote

Solution: There are three types of computers basically on the basis of operation:

Q16. Which of the following type of computer is mostly used for automatic operations?.
  1. analog
  2. digital
  3. hybrid
  4. remote

Answer: c, hybrid

Solution: Hybrid computer is mostly used with automatic operations of complicated physical processes and machines.

Q17. Which of the following invention gave birth to the much cheaper microcomputers?.
  1. PDAs
  2. Microprocessors
  3. Microcomputers
  4. Mainframes

Answer: b, Microprocessors

Solution: The invention of the microprocessor (also called a single-chip CPU) gave birth to much cheaper microcomputers.

Q18. Which of the following computers are lower than mainframe computers in terms of speed and storage capacity?.
  1. Mainframes
  2. Hybrid
  3. Mini
  4. Super

Answer: c, Mini

Solution: The answer is a. Mini computers are compared to mainframe computers in terms of:

Q19. Which of the following is the first neural network computer?.
  1. AN
  2. AM
  3. RFD
  4. SNARC

Answer: d, SNARC

Solution: SNARC was the first neural network computer. it was built by Minsky and Edmonds in 1956.

Q20. The three main parts of the processor are _______ [SBI Clerk, 2012].
  1. ALU, Control Unit and Registers
  2. ALU, Control Unit and RAM
  3. Cache, Control Unit and Registers
  4. Control Unit, Registers and RAM

Answer: a, ALU, Control Unit and Registers

Q21. Which of the following does not relate to Input Unit ? [SBI Clerk, 2012].
  1. If accepts data from the outside world.
  2. It converts data into binary code that is understandable by the computer
  3. It converts binary data into the human readable form that is understandable to the users.
  4. It sends data in binary form to the computer for further processing

Answer: c, It converts binary data into the human readable form that is understandable to the users.

Solution: This is the job of Output Unit, not Input Unit (output devices convert binary into human-readable form).

Q22. Which printer cannot print more than one character at a time ? [SSC, CHSL, 2012].
  1. Line
  2. Daisy-wheel
  3. Laser
  4. Dot-matrix

Answer: b, Daisy-wheel

Solution:

  • Line Printer → Prints an entire line at once (many characters).
  • Daisy-wheel Printer → Works like a typewriter, prints one character at a time by striking the wheel.
  • Laser Printer → Can print a whole page at once.
  • Dot-matrix Printer → Prints characters as a pattern of dots (character by character or graphics).

Q23. ________key is the example of Toggle key [IBPS Clerk, 2012].
  1. Alt
  2. Shift
  3. Control
  4. Caps Lock

Answer: d, Caps Lock

Q24. Video controller [IBPS Clerk, 2012].
  1. Controls the resolution of images on screen
  2. Controls the signals to be sent and received from processor for display
  3. Handles the entire electronic work behind the formation of images on the screen
  4. Is responsible for allocating pixels for formation of images

Answer: c, Handles the entire electronic work behind the formation of images on the screen

Q25. Which of these is a point-and-draw device ? [IBPS PO, 2012].
  1. mouse
  2. scanner
  3. printer
  4. CD-ROM

Answer: a, mouse

Solution: Mouse is a point-and-draw device because you can point at items on the screen and draw shapes/lines in graphics programs.

Q26. When a key is pressed on the keyboard, which standard is used for converting the keystroke into the corresponding bits? [IBPS PO, 2013].
  1. ANSI
  2. ASCII
  3. EBCDIC
  4. ISO

Answer: a, ANSI

Q27. _______ devices convert human-understandable data and programs into a form that the computer can process. [SBI PO, 2013].
  1. Printing
  2. Output
  3. Solid State
  4. Input

Answer: d, Input

Solution: Take human-readable data (like text, numbers, images, sound). Convert it into a machine-readable (binary) form. Send it to the computer for processing.

Q28. The CPU comprises of Control, Memory, and ________ units. [SBI PO, 2013].
  1. Microprocessor
  2. Arithmetic/Logic
  3. Output
  4. ROM

Answer: b, Arithmetic/Logic

Q29. A joystick is primarily used to/for ___________. [SBI PO, 2013].
  1. Control sound on the screen
  2. Computer gaming
  3. Enter text
  4. Draw pictures

Answer: b, Computer gaming

Q30. Which part of the computer displays the work done ? [SBI Clerk, 2009].
  1. RAM
  2. Printer
  3. Monitor
  4. ROM

Answer: c, Monitor

Solution:

Displays the work done on the computer screen in real-time (output device).​

Q31. For seeing the output, you use–––––– [SBI Clerk, 2009].
  1. Monitor
  2. Keyboard
  3. Mouse
  4. Scanner

Answer: a, Monitor

Q32. A scanner scans–––––– [SBI Clerk, 2009].
  1. Pictures
  2. Text
  3. Both Pictures and Text
  4. Neither Pictures nor Text

Answer: c, Both Pictures and Text

Q33. Which of the following is not an input device? [SBI Clerk, 2009].
  1. Keyboard
  2. Monitor
  3. Joystick
  4. Microphone

Answer: b, Monitor

Q34. Back up of the data files will help to prevent ——— [SBI Clerk, 2009].
  1. loss of confidentiality
  2. duplication of data
  3. virus infection
  4. loss of data

Answer: d, loss of data

Q35. Which is the part of the computer system that one can physically touch ? [SBI Clerk, 2009].
  1. data
  2. operating system
  3. hardware
  4. software

Answer: c, hardware

Q36. ——— is processed by the computer into information. [SBI Clerk, 2009].
  1. Data
  2. Numbers
  3. Alphabets
  4. Pictures

Answer: a, Data

Q37. To access properties of an object, the mouse technique to use is––. [SBI Clerk, 2009].
  1. right-clicking
  2. shift-clicking
  3. dragging
  4. dropping

Answer: a, right-clicking

Solution:

Whenever you want to see more options or properties of something on the computer → just right-click it.

Q38. A ––– can make it easier to play games. [SBI Clerk, 2009].
  1. mouse
  2. joystick
  3. keyboard
  4. pen

Answer: b, joystick

Q39. Codes consisting of lines of varying widths or lengths that are computer-readable are known as [IBPS PO, 2011].
  1. an ASCII code
  2. a magnetic tape
  3. a bar code
  4. an OCR scanner

Answer: c, a bar code

Q40. Any data or instruction entered into the memory of a computer is considered as [SBI Clerk, 2009].
  1. storage
  2. output
  3. input
  4. information

Answer: c, input

Q41. Video processors consist of_____ and_____ which store and process images. [IBPS PO, 2011].
  1. CPU and VGA
  2. CPU and memory
  3. VGA and memory
  4. VGI and DVI

Answer: c, VGA and memory

Solution:

  • Video processors handle images/graphics.
  • They need a VGA (Video Graphics Array/adapter) to process the images.
  • And they need memory to store those images.

Q42. A keyboard is this kind of device [SBI Clerk, 2009].
  1. black
  2. input
  3. output
  4. word processing

Answer: b, input

Q43. Arithmetic operations [SBI Clerk, 2009].
  1. involve matching one data item to another to determine if the first item is greater than, equal to, or less than the other item
  2. sort data items according to standard, predefined criteria in ascending order or descending order
  3. use conditions with operators such as AND, OR and NOT
  4. include addition, subtraction, multiplication, and division

Answer: d, include addition, subtraction, multiplication, and division

Q44. A series of instructions that tells a computer what to do and how to do it is called a [SBI Clerk, 2009].
  1. program
  2. command
  3. user response
  4. processor

Answer: a, program

Q45. The main system board of a computer is called the [IBPS Clerk, 2011].
  1. integrated circuit
  2. motherboard
  3. processor
  4. microchip

Answer: b, motherboard

Q46. Which of the following groups consist of only output devices? [SBI Clerk, 2009].
  1. Scanner, Printer, Monitor
  2. Keyboard, Printer, Monitor
  3. Mouse, Printer, Monitor
  4. Plotter, Printer, Monitor

Answer: d, Plotter, Printer, Monitor

Q47. Why is the Caps Lock key referred to as a toggle key? [IBPS Clerk, 2011].
  1. Because its function goes back and forth every time it is pressed
  2. Because it cannot be used for entering numbers
  3. Because it cannot be used to delete
  4. Because it cannot be used to insert

Answer: a, Because its function goes back and forth every time it is pressed

Q48. Using output devices one can [IBPS Clerk, 2011].
  1. input data
  2. store data
  3. scan data
  4. view or print data

Answer: d, view or print data

Q49. Which of the following categories would include a keyboard? [IBPS Clerk, 2011].
  1. Printing Device
  2. Output Device
  3. Pointing Device
  4. Input Device

Answer: d, Input Device

Q50. What type of keys are ‘ctrl’ and ‘shift’? [IBPS Clerk, 2011].
  1. adjustment
  2. function
  3. modifier
  4. alphanumeric

Answer: c, modifier

Solution: Ctrl and Shift don’t do anything alone, but they modify the action of other keys.

Example: Ctrl + C = Copy, Shift + A = Capital A.
So, Ctrl & Shift = Modifier keys.

​

Q51. The term _________ refers to data storage systems that make it possible for a computer or electronic device to store and retrieve data. [SBI Clerk, 2011].
  1. retrieval technology
  2. input technology
  3. output technology
  4. storage technology

Answer: d, storage technology

Q52. The term _________ refers to any computer component that is required to perform work. [SBI Clerk, 2011].
  1. bootstrap
  2. kernel
  3. resource
  4. source code

Answer: c, resource

Solution:

Anything the computer needs to do work (CPU, memory, disk, printer, etc.) = Resource.
  • Bootstrap → startup program.
  • Kernel → core of the operating system.
  • Source code → human-readable program.

Q53. The ________ is responsible for performing calculations and contains decision-making mechanisms. [SBI Clerk, 2011].
  1. Central Processing Unit
  2. Memory Unit
  3. Arithmetic and Logic Unit
  4. Output Unit

Answer: c, Arithmetic and Logic Unit

Q54. You use a (n) ________, such as a keyboard or mouse, to input information. [SBI Clerk, 2011].
  1. storage device
  2. processing device
  3. input device
  4. output device

Answer: c, input device

Q55. What is output? [SBI Clerk, 2011].
  1. What the processor takes from the user
  2. What the user gives to the processor
  3. What the processor gets from the user
  4. What the processor gives to the user

Answer: d, What the processor gives to the user

Q56. Computer_________ is whatever is typed, submitted, or transmitted to a computer system. [SBI Clerk, 2011].
  1. input
  2. output
  3. data
  4. circuitry

Answer: a, input

Q57. Which process checks to ensure the components of the computer are operating and connected properly? [SBI Clerk, 2011].
  1. Booting
  2. Processing
  3. Saving
  4. Editing

Answer: a, Booting

Solution:

When you turn on the computer, it does a quick self-check of all parts → this is called Booting.
  • Processing → running instructions.
  • Saving → storing data.
  • Editing → changing data.

Q58. _________ is processed by the computer into information. [SBI Clerk, 2011].
  1. numbers
  2. processor
  3. input
  4. data

Answer: d, data

Q59. Ctrl, shift and alt are called _________ keys. [SBI Clerk, 2011].
  1. adjustment
  2. function
  3. modifier
  4. alphanumeric

Answer: c, modifier

Q60. All the characters that a device can use is called its ? [SBI Clerk, 2012].
  1. Skill Set
  2. Character Alphabet
  3. Character Codes
  4. Character Set

Answer: d, Character Set

Q61. A printer is this kind of device [SBI Clerk, 2009].
  1. input
  2. word processing
  3. processing
  4. output

Answer: d, output