**Components of Computer System: Multiple Choice Questions**
**1. What are the three main types of components in a computer?**
a) Hardware, Software, Peripheral
b) Input, Processing, Output
c) CPU, RAM, Hard Drive
d) Monitor, Keyboard, Mouse
**Answer: b) Input, Processing, Output**
**2. According to the document, what is the role of input devices analogous to in a human?**
a) The brain
b) The hands and legs
c) The five senses
d) The memory
**Answer: c) The five senses**
**3. Which of the following is NOT a hardware component?**
a) Microsoft Excel
b) Monitor
c) Motherboard
d) Keyboard
**Answer: a) Microsoft Excel**
**4. The Central Processing Unit (CPU) is responsible for all EXCEPT:**
a) Controlling the sequence of operations
b) Storing data permanently
c) Providing instructions to other parts
d) Controlling the memory
**Answer: b) Storing data permanently**
**5. Which component of the CPU is responsible for performing arithmetic operations like addition and subtraction?**
a) Control Unit (CU)
b) Memory Unit
c) Arithmetic and Logic Unit (ALU)
d) Storage Unit
**Answer: c) Arithmetic and Logic Unit (ALU)**
**6. Which of the following is a logical operation performed by the ALU?**
a) Division (/)
b) Exponentiation (*)
c) Logical AND
d) Addition (+)
**Answer: c) Logical AND**
**7. Which of these is an example of an output device?**
a) Scanner
b) Microphone
c) Speaker
d) Webcam
**Answer: c) Speaker**
**8. Software that is the core requirement for a computer to operate is called:**
a) Application Software
b) System Software
c) Programming Tools
d) Utility Software
**Answer: b) System Software**
**9. Google Chrome, MS Office, and VLC player are examples of:**
a) System Software
b) Application Software
c) Programming Tools
d) Device Drivers
**Answer: b) Application Software**
**10. Visual Studio and GCC compiler are examples of:**
a) System Software
b) Application Software
c) Computer Programming Tools
d) Operating Systems
**Answer: c) Computer Programming Tools**
**11. Which input device is used to read barcodes?**
a) Scanner
b) Graphic Tablet
c) Barcode Reader
d) Optical Mark Reader (OMR)
**Answer: c) Barcode Reader**
**12. An output device that translates computer data into a printed document is a:**
a) Monitor
b) Projector
c) Printer
d) Speaker
**Answer: c) Printer**
**13. Which storage device is known for using magnetic storage with rotating platters?**
a) USB Flash Drive
b) Solid-State Drive (SSD)
c) Hard Disk Drive (HDD)
d) Cloud Storage
**Answer: c) Hard Disk Drive (HDD)**
**14. Primary memory that is directly accessed by the CPU is:**
a) Slow but has high capacity
b) Fast and volatile
c) Non-volatile and permanent
d) Like a hard disk
**Answer: b) Fast and volatile**
**15. RAM is an acronym for:**
a) Random Access Memory
b) Readily Available Memory
c) Read Access Memory
d) Random Allocation Memory
**Answer: a) Random Access Memory**
**16. Which type of RAM is made up of capacitors, is smaller in size, and less expensive?**
a) SRAM
b) DRAM
c) ROM
d) PROM
**Answer: b) DRAM**
**17. ROM stands for:**
a) Random Only Memory
b) Read Only Memory
c) Read Operational Memory
d) Random Operational Memory
**Answer: b) Read Only Memory**
**18. Which type of ROM is reusable and allows buggy data to be erased and re-written?**
a) PROM
b) EPROM
c) Both PROM and EPROM
d) Neither
**Answer: b) EPROM**
**19. Devices attached to a computer for additional functionalities are called:**
a) Core Components
b) Software Components
c) Peripheral Devices
d) Processing Units
**Answer: c) Peripheral Devices**
**20. A touch-based device that allows artists to draw directly on screen is a:**
a) Joystick
b) Graphic Tablet
c) Touchscreen Monitor
d) Scanner
**Answer: b) Graphic Tablet**
**21. The principal control device in the cockpit of an aircraft is a:**
a) Mouse
b) Keyboard
c) Joystick
d) Trackball
**Answer: c) Joystick**
**22. A device that creates a digital image of a physical document is a:**
a) Printer
b) Monitor
c) Scanner
d) Webcam
**Answer: c) Scanner**
**23. Which device was crucial for enabling online education during the Covid-19 pandemic?**
a) Printer and Plotter
b) Microphone and Webcam
c) Joystick and Graphic Tablet
d) Barcode Reader and Scanner
**Answer: b) Microphone and Webcam**
**24. Which type of monitor is less harmful to the eyes and replaced bulky CRT monitors?**
a) LED
b) LCD
c) Plasma
d) Both a & b
**Answer: d) Both a & b**
**25. A touchscreen that works with fingertips is called:**
a) Resistive Touchscreen
b) Capacitive Touchscreen
c) Optical Touchscreen
d) Infrared Touchscreen
**Answer: b) Capacitive Touchscreen**
**26. Which printer works by pushing heated pins against heat-sensitive paper?**
a) Inkjet Printer
b) Laser Printer
c) Thermal Printer
d) Impact Printer
**Answer: c) Thermal Printer**
**27. An output device used to project a computer's display onto a large surface is a:**
a) Monitor
b) Television
c) Projector
d) Touchscreen
**Answer: c) Projector**
**28. What is the key characteristic of non-volatile memory?**
a) It loses data when power is off
b) It requires constant power
c) It does not require power to retain data
d) It is faster than volatile memory
**Answer: c) It does not require power to retain data**
**29. A compact, portable storage device that plugs into a USB port is a:**
a) Floppy Disk
b) Hard Disk
c) Flash Drive
d) CD Drive
**Answer: c) Flash Drive**
**30. What does the save symbol in most software represent?**
a) A hard disk
b) A floppy disk
c) A USB drive
d) A cloud
**Answer: b) A floppy disk**
**31. Which disk has the largest storage capacity?**
a) CD (700MB)
b) DVD (4.7GB)
c) Blu-ray DVD (25GB)
d) Floppy Disk (1.44MB)
**Answer: c) Blu-ray DVD (25GB)**
**32. The process of starting a computer is called:**
a) Rebooting
b) Shutting Down
c) Booting
d) Loading
**Answer: c) Booting**
**33. Restarting a computer is called:**
a) Booting
b) Rebooting
c) Shutting Down
d) Powering On
**Answer: b) Rebooting**
**34. What is the first stage of the booting process?**
a) Loading the OS
b) Conducting POST
c) Loading the BIOS
d) Checking device drivers
**Answer: c) Loading the BIOS**
**35. POST is an acronym for:**
a) Power-On System Test
b) Power-Off Self-Test
c) Power-On Self-Test
d) Programmable Operating System Test
**Answer: c) Power-On Self-Test**
**36. The safest way to shut down a computer is:**
a) Pulling the power plug
b) Using the software shutdown option
c) Pressing the physical power button for 10 seconds
d) Closing the laptop lid
**Answer: b) Using the software shutdown option**
**37. The core software that makes hardware usable is the:**
a) Application Software
b) Operating System (OS)
c) Programming Tool
d) Device Driver
**Answer: b) Operating System (OS)**
**38. Which of these is NOT a basic function of an Operating System?**
a) Interface between user and hardware
b) Coordinate hardware components
c) Perform complex calculations for the user
d) Provide structure for data management
**Answer: c) Perform complex calculations for the user**
**39. An OS interface that uses text commands is called a:**
a) Graphical User Interface (GUI)
b) Command-Line Interface (CLI)
c) Menu-Driven Interface
d) Touch User Interface
**Answer: b) Command-Line Interface (CLI)**
**40. An OS designed for processes where real-time computations are critical is a:**
a) Batch OS
b) Real-Time OS
c) Distributed OS
d) Network OS
**Answer: b) Real-Time OS**
**41. An OS that runs on servers and manages networking functions is a:**
a) Mobile OS
b) Real-Time OS
c) Network OS
d) Batch OS
**Answer: c) Network OS**
**42. Which OS was based on a Command-Line Interface (CLI)?**
a) Windows 10
b) macOS
c) Disk Operating System (DOS)
d) Ubuntu Linux
**Answer: c) Disk Operating System (DOS)**
**43. The most popular operating system for personal computers is:**
a) Linux
b) macOS
c) Windows
d) DOS
**Answer: c) Windows**
**44. What does "open-source" mean, as applied to Linux?**
a) It is free to use
b) It can be modified and distributed by anyone
c) It only runs on servers
d) It is developed by Microsoft
**Answer: b) It can be modified and distributed by anyone**
**45. Which operating system is developed by Apple Inc. for their computers?**
a) Windows
b) Linux
c) DOS
d) macOS
**Answer: d) macOS**
**46. The main screen you see after logging into an OS is called the:**
a) Home Screen
b) Desktop
c) Interface
d) Dashboard
**Answer: b) Desktop**
**47. On a Windows desktop, what holds deleted files temporarily?**
a) My Documents
b) Downloads Folder
c) Recycle Bin
d) System Tray
**Answer: c) Recycle Bin**
**48. The area on the desktop that displays time, sound, and connectivity is the:**
a) Taskbar
b) Search Bar
c) System Tray
d) Start Menu
**Answer: c) System Tray**
**49. The basic unit for storing information on a computer is a:**
a) Folder
b) Drive
c) File
d) Byte
**Answer: c) File**
**50. What does a file's extension indicate?**
a) Its size
b) Its creation date
c) Its type and what program can open it
d) Its author
**Answer: c) Its type and what program can open it**
**51. A folder inside another folder is called a:**
a) Main Folder
b) Sub-Folder
c) Root Folder
d) System Folder
**Answer: b) Sub-Folder**
**52. In Windows, which drive typically contains the operating system?**
a) A: Drive
b) B: Drive
c) C: Drive
d) D: Drive
**Answer: c) C: Drive**
**53. On a keyboard, the Shift, Ctrl, and Alt keys are known as:**
a) Function Keys
b) Typing Keys
c) Special Keys
d) Numeric Keys
**Answer: c) Special Keys**
**54. What is the primary function of a computer mouse?**
a) To type text
b) To provide interactive on-screen control
c) To print documents
d) To scan images
**Answer: b) To provide interactive on-screen control**
**55. Clicking the left mouse button twice quickly is called:**
a) Single-Clicking
b) Double-Clicking
c) Right-Clicking
d) Drag-and-Drop
**Answer: b) Double-Clicking**
**56. The action of moving a file by clicking, holding, and releasing the mouse button is:**
a) Copying
b) Right-Clicking
c) Double-Clicking
d) Drag-and-Drop
**Answer: d) Drag-and-Drop**
**57. Right-clicking on an item typically opens a:**
a) New file
b) Context menu with options
c) The selected item
d) The recycle bin
**Answer: b) Context menu with options**
**58. Which hardware component is considered the "brain" of the computer?**
a) RAM
b) Hard Drive
c) CPU
d) Motherboard
**Answer: c) CPU**
**59. Which of these is a secondary storage device?**
a) RAM
b) ROM
c) Hard Disk Drive
d) CPU Cache
**Answer: c) Hard Disk Drive**
**60. The quote "It's the hardware that makes a machine fast. It is the software that makes a fast machine slow" is attributed to:**
a) Bill Gates
b) Linus Torvalds
c) Craig Bruce
d) Steve Jobs
**Answer: c) Craig Bruce**
**61. In the human analogy, what does the computer's CPU represent?**
a) The senses
b) The hands and legs
c) The brain
d) The nerves
**Answer: c) The brain**
**62. Device drivers are a type of:**
a) Application Software
b) System Software
c) Programming Tool
d) Utility Software
**Answer: b) System Software**
**63. Which input device is specifically designed to capture speech signals?**
a) Webcam
b) Scanner
c) Microphone
d) Speaker
**Answer: c) Microphone**
**64. A large-format printer used for printing posters is a:**
a) Inkjet Printer
b) Laser Printer
c) Plotter
d) Thermal Printer
**Answer: c) Plotter**
**65. Which memory is volatile?**
a) ROM
b) HDD
c) SSD
d) RAM
**Answer: d) RAM**
**66. Which peripheral device is both an input and an output device?**
a) Printer
b) Keyboard
c) Touchscreen Monitor
d) Speaker
**Answer: c) Touchscreen Monitor**
**67. During booting, the stage where the user selects an OS (if multiple exist) happens:**
a) After POST
b) Before BIOS loads
c) After utilities are loaded
d) Before device drivers are checked
**Answer: a) After POST**
**68. A distributed OS uses:**
a) One powerful processor
b) Many processors in different machines
c) Only mobile processors
d) Processors from the same company
**Answer: b) Many processors in different machines**
**69. Ubuntu is a popular version of which operating system?**
a) Windows
b) macOS
c) Linux
d) DOS
**Answer: c) Linux**
**70. The "Dash Button" in Ubuntu is used to:**
a) Shut down the computer
b) Access all applications and features
c) Show the system tray
d) Open the recycle bin
**Answer: b) Access all applications and features**
**71. The .pptx extension is most likely associated with:**
a) A Microsoft Word document
b) A Microsoft PowerPoint presentation
c) An image file
d) A compressed folder
**Answer: b) A Microsoft PowerPoint presentation**
**72. The main purpose of a webcam is to:**
a) Print documents
b) Capture and transmit video
c) Scan barcodes
d) Project images
**Answer: b) Capture and transmit video**
**73. Which component coordinates all the hardware components of a computer?**
a) Application Software
b) Motherboard
c) Operating System
d) BIOS
**Answer: c) Operating System**
**74. What is the primary function of the NUM LOCK key?**
a) To control the cursor
b) To toggle the numeric keypad between numbers and arrows
c) To launch the calculator
d) To enable special characters
**Answer: b) To toggle the numeric keypad between numbers and arrows**
**75. The area on a keyboard containing the letters A-Z is called the:**
a) Numeric Keypad
b) Function Keys
c) Main Typing Keypad
d) Cursor Controls
**Answer: c) Main Typing Keypad**
**76. Which key is often used in combination with others to create shortcuts (e.g., Ctrl+C)?**
a) Shift
b) Alt
c) Ctrl (Control)
d) Enter
**Answer: c) Ctrl (Control)**
**77. A joystick reports its ______ to the computer.**
a) Color
b) Angle or direction
c) Temperature
d) Size
**Answer: b) Angle or direction**
**78. Which storage medium has the smallest capacity?**
a) Blu-ray Disc (25GB)
b) DVD (4.7GB)
c) CD (700MB)
d) Floppy Disk (1.44MB)
**Answer: d) Floppy Disk (1.44MB)**
**79. The power for a computer's internal components is converted from:**
a) AC to DC
b) DC to AC
c) High voltage DC to low voltage DC
d) It uses AC directly
**Answer: a) AC to DC**
**80. Which OS is designed to consume less power for mobile devices?**
a) Batch OS
b) Network OS
c) Mobile OS
d) Real-Time OS
**Answer: c) Mobile OS**
**81. The first version of Windows was launched in:**
a) 1995
b) 1985
c) 2001
d) 1991
**Answer: b) 1985**
**82. Linux was first released by:**
a) Bill Gates
b) Steve Jobs
c) Linus Torvalds
d) Apple Inc.
**Answer: c) Linus Torvalds**
**83. The Mac operating system was once named after:**
a) Planets
b) Scientists
c) Big Cats
d) Cities
**Answer: c) Big Cats**
**84. Which of these is a common folder in Windows OS?**
a) Safari
b) Downloads
c) Finder
d) Dash
**Answer: b) Downloads**
**85. The physical parts of a computer that you can touch are called:**
a) Software
b) Applications
c) Hardware
d) Peripherals
**Answer: c) Hardware**
**86. Which unit processes the data received from the input devices?**
a) Input Unit
b) Output Unit
c) Processing Unit (CPU)
d) Storage Unit
**Answer: c) Processing Unit (CPU)**
**87. Which of these is a storage device?**
a) ALU
b) Webcam
c) USB Flash Drive
d) Microphone
**Answer: c) USB Flash Drive**
**88. A set of instructions that tells the hardware what to do is called:**
a) Hardware
b) Software
c) Input
d) Output
**Answer: b) Software**
**89. Which port is commonly used to connect a flash drive?**
a) HDMI Port
b) USB Port
c) Audio Jack
d) Power Port
**Answer: b) USB Port**
**90. What does a projector project onto a screen?**
a) Sound
b) Images from a computer
c) Physical documents
d) Heat
**Answer: b) Images from a computer**
**91. The BIOS is stored on:**
a) The Hard Drive
b) A chip on the motherboard
c) The CPU
d In the RAM
**Answer: b) A chip on the motherboard**
**92. During a safe shutdown, the OS will:**
a) Immediately cut power
b) Prompt you to save unsaved data
c) Skip closing open programs
d) Restart instead
**Answer: b) Prompt you to save unsaved data**
**93. The "This PC" section in Windows provides access to:**
a) Only the internet
b) All storage drives and folders
c) Only the recycle bin
d) Only the control panel
**Answer: b) All storage drives and folders**
**94. The main difference between SRAM and DRAM is that:**
a) SRAM is slower
b) DRAM uses flip-flops
c) SRAM does not need to be refreshed
d) DRAM is more expensive
**Answer: c) SRAM does not need to be refreshed**
**95. A barcode reader is an example of an ______ device.**
a) Output
b) Processing
c) Input
d) Storage
**Answer: c) Input**
**96. The primary purpose of an operating system is to:**
a) Create spreadsheets
b) Manage the computer's resources
c) Browse the internet
d) Play video games
**Answer: b) Manage the computer's resources**
**97. Which key would you use to type a question mark (?) that is on the same key as the slash (/)?**
a) Ctrl key
b) Alt key
c) Shift key
d) Caps Lock key
**Answer: c) Shift key**
**98. The function of the Recycle Bin is to:**
a) Permanently delete files immediately
b) Provide temporary storage for deleted files
c) Store system files
d) Increase computer speed
**Answer: b) Provide temporary storage for deleted files**
**99. Which of these is a non-volatile memory?**
a) RAM
b) CPU Cache
c) ROM
d) None of the above
**Answer: c) ROM**
**100. A computer's ability to run multiple operating systems is handled during:**
a) The POST stage
b) The bootloader stage
c) After the user logs in
d) The device driver loading stage
**Answer: b) The bootloader stage**