Level 1
Operating Systems MCQs set 2 for PPSC Senior Clerk (BS-14) Computer Science — 20 solved questions.
Q1. When a computer is switched on, the booting process performs a:
Answer: Power-On Self-Test
Explanation: When a computer starts up, it performs a Power-On Self-Test (POST) to check that hardware components like RAM, CPU, and storage are functioning correctly.
Q2. Which of the following is a part of the Central Processing Unit?
Answer: Arithmetic & Logic Unit
Explanation: The Arithmetic & Logic Unit (ALU) is a core component of the CPU, responsible for performing arithmetic calculations and logical operations.
Q3. The process of transferring files from a computer on the Internet to your computer is called:
Answer: Downloading
Explanation: Downloading is the process of transferring files from a remote server or computer on the internet to your local computer.
Q4. Which of the following are word processing software?
Answer: MS Word
Explanation: MS Word is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.
Q5. A normal CD-ROM usually can store up to 680 MB of data.
Answer: 680 MB
Explanation: A standard CD-ROM can store up to 680 MB (megabytes) of data, equivalent to approximately 74 minutes of audio.
Q6. In PowerPoint, if you select Insert >> Picture >> From File, you can:
Answer: You can insert pictures only
Explanation: Using Insert > Picture > From File inserts only image files (pictures) stored on disk; it does not insert clip art from the Office clip art library.
Q7. Which of the following keyboard shortcuts is used to switch between open apps in Windows 10:
Answer: Alt+Tab
Explanation: Alt+Tab is the Windows shortcut to cycle through and switch between currently open applications on the taskbar.
Q8. Who invented the C programming language?
Answer: Dennis Ritchie
Explanation: Dennis Ritchie developed the C programming language at Bell Labs in the early 1970s, which became the foundation for many modern programming languages.
Q9. By programmable machine we mean:
Answer: Anything that can be set to perform different tasks with suitable programs
Explanation: A programmable machine is any device that can be instructed via programs to perform different tasks, which includes computers and many other configurable devices.
Q10. The Microsoft Office Suite spreadsheet program is:
Answer: Microsoft Excel
Explanation: Microsoft Excel is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.
Q11. MS PowerPoint is a presentation program.
Answer: MS PowerPoint
Explanation: MS PowerPoint is Microsoft's presentation software, used to create slideshows combining text, graphics, and multimedia.
Q12. The ______ program compresses large files into a smaller file.
Answer: WinZip
Explanation: WinZip is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.
Q13. Which of the following do not belong to queues for processes?
Answer: PCB queue
Explanation: PCB (Process Control Block) queue is not a standard process scheduling queue; the standard queues are Job Queue, Ready Queue, and Device Queue.
Q14. Windows 9 main features are:
Answer: Windows 9 Not launched
Explanation: Microsoft never officially released Windows 9; after Windows 8.1, the company skipped directly to Windows 10 in 2015.
Q15. In Windows Operating System, _ is known as a File Manager:
Answer: Windows Explorer
Explanation: Windows Explorer (File Explorer in later versions) is the built-in file management tool in Windows OS for browsing files and folders.
Q16. Which of the following does not belong to queues for processes?
Answer: PCB queue
Explanation: PCB queue is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.
Q17. Which of these keys are used in Ms Excel to copy a formula from the above cell?
Answer: Ctrl+ '
Explanation: Ctrl+' (apostrophe) copies the formula from the cell directly above into the current cell in MS Excel.
Q18. To protect a computer from viruses, you should install _____ on your computer.
Answer: Antivirus
Explanation: Antivirus is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.
Q19. Windows 10 was launched in which year?
Answer: 2015
Explanation: Windows 10 was officially released on July 29, 2015, as a free upgrade for Windows 7 and 8.1 users.
Q20. How is data copied from one Excel sheet to another Excel sheet?
Answer: Referencing
Explanation: Referencing is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.