1st puc Computer Science MCQ Questions | class 11 computer science mcq chapter 1 | chapter 1 computer system class 11 mcq questions

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1. What does CPU stand for?

A) Centralized Processing Unit
B) Central Programming Unit
C) Computer Personal Unit
D) Central Processing Unit
ANSWER= D) Central Processing Unit



2. Which memory is known for its high speed and is placed between the CPU and primary memory?

A) Secondary Memory
B) Cache Memory
C) RAM
D) ROM

ANSWER= B) Cache Memory



3. What is the primary role of the memory controller?

A) To regulate power supply to the computer
B) To control the CPU speed
C) To manage data flow into and out of the main memory
D) To manage external storage devices

ANSWER= C) To manage data flow into and out of the main memory



4. Which device is considered the first computing device?

A) Abacus
B) Pascaline
C) Anaytical Engine
D) EDVAC

ANSWER= A) Abacus



5. Who is known as the 'father of the computer' for his concept of the Analytical Engine?

A) Alan Turing
B) Blaise Pascal
C) Charles Babbage
D) John Von Neumann

ANSWER= C) Charles Babbage



6. What significant technology replaced vacuum tubes in computers?

A) Integrated Circuits
B) Transistors
C) Microprocessor
D) Punch Cards

ANSWER= B) Transistors



7. Which type of memory is volatile and used for temporary storage?

A) RAM
B) ROM
C) HDD
D) SSD

ANSWER= A) RAM



8. Which of the following is a type of secondary memory?

A) Processor
B) Cache Memory
C) Registers
D) Hard Disk Drive (HDD)

ANSWER= D) Hard Disk Drive (HDD)



9. What is the key characteristic of secondary memory?

A) High Speed
B) Non-volatile
C) Small Storage Capacity
D) Expensive

ANSWER= B) Non-volatile



10. What is a bus in computer terminology?

A) A physical wire used for data transfer
B) A type of software
C) A storage device
D) A type of processor

ANSWER= A) A physical wire used for data transfer



11. Which bus is used to transfer data between different components of a computer?

A) Control Bus
B) Address Bus
C) Data Bus
D) System Bus

ANSWER= C) Data Bus



12. Which bus is used to specify memory addresses?

A) Data Bus
B) Address Bus
C) Control Bus
D) System Bus

ANSWER= B) Address Bus



13. What is a microprocessor?

A) An input device
B) A type of secondary memory
C) A CPU on a single microchip
D) A high-speed cache memory

ANSWER= C) A CPU on a single microchip



14. Which generation of microprocessors introduced the use of integrated circuits (ICs)?

A) First Generation
B) Second Generation
C) Third Generation
D) Fourth Generation

ANSWER= C) Third Generation



15. Which of the following microprocessors belongs to the fifth generation?

A) Pentium
B) Motorola 6800
C) Intel 80386
D) Intel 8080

ANSWER= A) Pentium



16. What type of software provides core functionality to a computer system?

A) Application Software
B) System Software
C) Utility Software
D) Open Source Software

ANSWER= B) System Software



17. Which software category includes programs like word processors and spreadsheets?

A) System Software
B) Customized Software
C) General Purpose Software
D) Embedded Software

ANSWER= C) General Purpose Software



18. Which of the following is an example of Free and Open Source Software (FOSS)?

A) Adobe Photoshop
B) Microsoft Word
C) Mozilla Firefox
D) CorelDRAW

ANSWER= C) Mozilla Firefox



19. What is the primary function of an operating system?

A) To provide internet security
B) To develop new software
C) To manage computer hardware and software resources
D) To create graphics

ANSWER= C) To manage computer hardware and software resources



20. Which of the following is not an operating system?

A) Windows
B) Linux
C) Android
D) Photoshop

ANSWER= D) Photoshop



21. What is multitasking in operating systems?

A) Enhancing graphics performance
B) Running multiple applications simultaneously
C) Installing new software
D) None of the above

ANSWER= B) Running multiple applications simultaneously



22. What was the primary function of the Analytical Engine?

A) Perform arithmetic calculations
B) Store data on punched cards
C) Control industrial machines
D) None of the above

ANSWER= A) Perform arithmetic calculations



23. Which device is used for data transfer between a USB port and a hard disk?

A) Cache
B) Processor
C) Memory Controller
D) Bus

ANSWER= D) Bus



24. Which component manages the flow of data in and out of the computer’s main memory?

A) CPU
B) Memory Controller
C) Cache
D) Bus

ANSWER= B) Memory Controller



25. Which generation of microprocessors had a word size of 32 bits?

A) Fourth Generation
B) First Generation
C) Second Generation
D) Third Generation

ANSWER= A) Fourth Generation



26. What is an example of customized software?

A) Media player
B) Web browser
C) School management software
D) Word processor

ANSWER= C) School management software



27. Which software can a computer not function without?

A) Application Software
B) System Software
C) Utility Software
D) None of the above

ANSWER= B) System Software



28. Who invented the tabulating machine?

A) Blaise Pascal
B) Charles Babbage
C) Herman Hollerith
D) Alan Turing

ANSWER= C) Herman Hollerith



29. What does ROM stand for?

A) Read Only Memory
B) Random Access Memory
C) Run-time Operating Memory
D) Remote Operations Manager

ANSWER= A) Read Only Memory



30. What is the primary function of application software?

A) To manage hardware resources
B) To perform tasks specific to the user's needs
C) To provide core system functionality
D) To enhance security

ANSWER= B) To perform tasks specific to the user's needs



31. Which operating system is known for its open-source nature?

A) iOS
B) Windows
C) MacOS
D) Linux

ANSWER= D) Linux



32. Which type of memory is used for permanent storage of data and instructions?

A) Primary Memory
B) Cache Memory
C) Secondary Memory
D) Virtual Memory

ANSWER= C) Secondary Memory



33. What is the function of the control bus in a computer system?

A) Transfer data between memory and CPU
B) Communicate control signals between different components
C) Specify memory addresses
D) None of the above

ANSWER= B) Communicate control signals between different components



34. Which generation of microprocessors introduced multicore processors?

A) Fifth Generation
B) First Generation
C) Third Generation
D) Second Generation

ANSWER= A) Fifth Generation



35. What type of software is used to develop new software applications?

A) System Software
B) Application Software
C) Utility Software
D) Programming Software

ANSWER= D) Programming Software



36. Who is credited with inventing the first mechanical computer?

A) John Von Neumann
B) Blaise Pascal
C) Alan Turing
D) Charles Babbage

ANSWER= D) Charles Babbage



37. What is the primary purpose of an operating system’s kernel?

A) Manage system resources and hardware
B) Provide graphical user interface
C) Facilitate user authentication
D) Manage network connections

ANSWER= A) Manage system resources and hardware



38. What kind of software is an antivirus program?

A) Application Software
B) System Software
C) Utility Software
D) Development Software

ANSWER= C) Utility Software



39. Which of the following is an example of embedded software?

A) Office suite
B) Software in a washing machine
C) Web browser
D) Media player

ANSWER= B) Software in a washing machine



40. Which of the following is an example of first-generation computers?

A) ENIAC
B) UNIVAC
C) IBM 701
D) Apple II

ANSWER= A) ENIAC



41. What is the primary characteristic of volatile memory?

A) Data is permanently stored
B) Data is lost when power is turned off
C) It is very slow
D) It is used for long-term storage

ANSWER= B) Data is lost when power is turned off



42. Which bus system component is used to specify memory addresses?

A) Address Bus
B) Data Bus
C) Control Bus
D) System Bus

ANSWER= A) Address Bus



43. Which of the following is a characteristic of fourth-generation computers?

A) Use of transistors
B) Use of vacuum tubes
C) Use of microprocessors
D) Use of integrated circuits

ANSWER= C) Use of microprocessors



44. Which type of software is used for managing computer hardware and software resources?

A) Application Software
B) System Software
C) Utility Software
D) Programming Software

ANSWER= B) System Software



45. What is the main function of cache memory?

A) To store frequently accessed data and instructions
B) To store data permanently
C) To execute arithmetic operations
D) To control peripheral devices

ANSWER= A) To store frequently accessed data and instructions



46. What is the role of an operating system in a computer?

A) Protect the computer from viruses
B) Develop new software
C) Manage hardware resources and provide common services for application software
D) Design graphics

ANSWER= C) Manage hardware resources and provide common services for application software



47. Which of the following is a non-volatile memory?

A) RAM
B) ROM
C) Cache Memory
D) Register

ANSWER= B) ROM



48. What does GUI stand for in computer terminology?

A) Graphical Unified Interface
B) General User Interface
C) Graphical User Interface
D) General Unified Interface

ANSWER= C) Graphical User Interface



49. Which component is referred to as the 'brain' of the computer?

A) Motherboard
B) RAM
C) Hard Disk
D) CPU

ANSWER= D) CPU



50. Which type of software typically includes operating systems, device drivers, and utilities?

A) System Software
B) Application Software
C) Customized Software
D) General Purpose Software

ANSWER= A) System Software