Computer MCQs – Set 8: 50 Questions for UPSC, PSC, SSC CGL & Govt Exams

  1. Which command is used to create a new directory in CMD?
    (A) mkdir
    (B) rmdir
    (C) cd
    (D) del
    Answer: (A)
  2. Which protocol converts domain names into IP addresses?
    (A) FTP
    (B) DNS
    (C) HTTP
    (D) IP
    Answer: (B)
  3. Which language is primarily used for database queries?
    (A) C
    (B) Java
    (C) SQL
    (D) HTML
    Answer: (C)
  4. Which of these is used for writing and testing HTML code?
    (A) Excel
    (B) Notepad++
    (C) VLC
    (D) Paint
    Answer: (B)
  5. What does the BIOS do during the boot process?
    (A) Loads user applications
    (B) Performs POST
    (C) Starts word processor
    (D) Runs antivirus
    Answer: (B)
  6. Which software compresses files to reduce size?
    (A) VLC
    (B) WinRAR
    (C) Notepad
    (D) WordPad
    Answer: (B)
  7. Which of these is an example of a cloud storage platform?
    (A) OneDrive
    (B) Access
    (C) Excel
    (D) PowerPoint
    Answer: (A)
  8. What does ASCII stand for?
    (A) American Standard Code for Information Interchange
    (B) Advanced System Communication for Internet Integration
    (C) American Software Compatibility Interface Index
    (D) Automatic Storage and Communication in Internet
    Answer: (A)
  9. Which shortcut key is used to insert a hyperlink in MS Word?
    (A) Ctrl + K
    (B) Ctrl + H
    (C) Ctrl + L
    (D) Ctrl + Shift + H
    Answer: (A)
  10. Which is the highest data transfer medium among the following?
    (A) Coaxial cable
    (B) Fiber optics
    (C) Ethernet
    (D) USB
    Answer: (B)
  11. Which Microsoft service is used for team collaboration and messaging?
    (A) OneDrive
    (B) Teams
    (C) Access
    (D) Skype
    Answer: (B)
  12. Which language is used for artificial intelligence programming?
    (A) HTML
    (B) Lisp
    (C) CSS
    (D) SQL
    Answer: (B)
  13. Which of these is a digital signature algorithm?
    (A) RSA
    (B) SHA
    (C) AES
    (D) DES
    Answer: (A)
  14. Which of the following is NOT a part of the OSI model?
    (A) Application
    (B) Presentation
    (C) Internet
    (D) Transport
    Answer: (C)
  15. What does GPU stand for?
    (A) General Processing Unit
    (B) Graphics Processing Unit
    (C) Graphical Programming Unit
    (D) Generated Processing Unit
    Answer: (B)
  16. Which programming language is used in web page interactivity?
    (A) HTML
    (B) JavaScript
    (C) CSS
    (D) SQL
    Answer: (B)
  17. Which port is used for HTTPS?
    (A) 21
    (B) 25
    (C) 443
    (D) 80
    Answer: (C)
  18. Which type of malware locks files and demands ransom?
    (A) Worm
    (B) Trojan
    (C) Ransomware
    (D) Spyware
    Answer: (C)
  19. What is a pixel?
    (A) A type of printer
    (B) A unit of image resolution
    (C) A font
    (D) A button in a GUI
    Answer: (B)
  20. Which storage device is used in smartphones for expansion?
    (A) HDD
    (B) SSD
    (C) microSD card
    (D) Blu-ray
    Answer: (C)
  21. Which of the following file extensions is associated with databases?
    (A) .db
    (B) .doc
    (C) .pdf
    (D) .mp3
    Answer: (A)
  22. Which device is used to digitize physical documents?
    (A) Printer
    (B) Scanner
    (C) Joystick
    (D) Speaker
    Answer: (B)
  23. Which part of the email address identifies the domain?
    (A) Before @
    (B) After @
    (C) Whole string
    (D) Only the dot extension
    Answer: (B)
  24. Which network topology has a central hub?
    (A) Ring
    (B) Mesh
    (C) Bus
    (D) Star
    Answer: (D)
  25. Which of the following is used to protect software from piracy?
    (A) License key
    (B) Registry
    (C) Firewall
    (D) Plug-in
    Answer: (A)
  26. Which mobile OS is developed by Apple?
    (A) Android
    (B) iOS
    (C) Windows Mobile
    (D) Blackberry
    Answer: (B)
  27. Which of the following can be used to create flowcharts?
    (A) Excel
    (B) Word
    (C) PowerPoint
    (D) Visio
    Answer: (D)
  28. Which tool is used to remove temporary files in Windows?
    (A) Disk Cleanup
    (B) Registry Editor
    (C) Disk Partition
    (D) Event Viewer
    Answer: (A)
  29. Which of these file types is used for compressed archives?
    (A) .zip
    (B) .png
    (C) .docx
    (D) .html
    Answer: (A)
  30. What is the full form of XML?
    (A) eXtra Machine Language
    (B) eXtended Markup Language
    (C) eXtensible Markup Language
    (D) eXecutable Markup Language
    Answer: (C)
  31. Which of the following allows computers to connect wirelessly?
    (A) Ethernet
    (B) Wi-Fi
    (C) USB
    (D) HDMI
    Answer: (B)
  32. Which of the following is not a mobile application platform?
    (A) Android
    (B) iOS
    (C) Windows
    (D) Ubuntu Server
    Answer: (D)
  33. Which input device is used to simulate handwriting?
    (A) Mouse
    (B) Scanner
    (C) Touchscreen
    (D) Stylus
    Answer: (D)
  34. Which of the following is NOT a search engine?
    (A) Bing
    (B) Ask
    (C) Yahoo
    (D) Google Chrome
    Answer: (D)
  35. Which of the following is the most secure method of authentication?
    (A) Password
    (B) PIN
    (C) Biometric
    (D) CAPTCHA
    Answer: (C)
  36. Which part of the computer is used for long-term storage?
    (A) RAM
    (B) ROM
    (C) SSD
    (D) Cache
    Answer: (C)
  37. Which of these allows creation of websites without coding?
    (A) Notepad
    (B) WordPress
    (C) C++
    (D) CMD
    Answer: (B)
  38. Which of these tools is used for network diagnostics?
    (A) ping
    (B) dir
    (C) format
    (D) cls
    Answer: (A)
  39. Which command is used to remove a directory in CMD?
    (A) rmdir
    (B) del
    (C) erase
    (D) mv
    Answer: (A)
  40. Which of the following is not a hardware?
    (A) Mouse
    (B) Monitor
    (C) Operating System
    (D) Printer
    Answer: (C)
  41. Which company developed the Chrome browser?
    (A) Microsoft
    (B) Mozilla
    (C) Apple
    (D) Google
    Answer: (D)
  42. What is the function of a modem?
    (A) Converts analog to digital signals
    (B) Formats hard disks
    (C) Stores data
    (D) Manages memory
    Answer: (A)
  43. Which key is used to enter BIOS in most PCs?
    (A) F1
    (B) F2
    (C) Del
    (D) Any of the above
    Answer: (D)
  44. Which of these file extensions is related to audio?
    (A) .mp4
    (B) .mp3
    (C) .jpg
    (D) .ppt
    Answer: (B)
  45. Which of these is an example of system software?
    (A) Notepad
    (B) Windows 10
    (C) VLC
    (D) Excel
    Answer: (B)
  46. Which component improves the visual output of a computer?
    (A) Sound card
    (B) Video card
    (C) Motherboard
    (D) Network card
    Answer: (B)
  47. Which component connects all the internal parts of a computer?
    (A) RAM
    (B) CPU
    (C) Motherboard
    (D) GPU
    Answer: (C)
  48. Which is an example of e-governance website in India?
    (A) Google
    (B) irctc.co.in
    (C) Amazon
    (D) Facebook
    Answer: (B)
  49. Which of these is not a feature of MS Excel?
    (A) Pivot Table
    (B) Slide Show
    (C) Chart
    (D) Filter
    Answer: (B)
  50. Which of these is a markup language?
    (A) HTML
    (B) C++
    (C) Java
    (D) Python
    Answer: (A)

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