Practice Operating Systems MCQs for NTS SNGPL / SSGCL (Gas Utilities) Computer Science — topic-wise sets with solved answers.
Q1. Microsoft Windows uses a GUI environment. GUI (pronounced "gooey") stands for:
Answer: Graphical User Interface
Explanation: GUI stands for Graphical User Interface, an interface that uses visual elements like icons and menus instead of text commands.
Q2. The process of transferring data from a computer to the internet is called:
Answer: Uploading
Explanation: Uploading is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.
Q3. When Word flags a possible spelling or grammar error, it also changes the mark on the Spelling and Grammar Status icon to a:
Answer: Red X
Explanation: When MS Word detects a possible spelling or grammar error, the Spelling and Grammar Status icon displays a red X to alert the user.
Q4. Which type of malware is a program or piece of code that is loaded onto a person's computer without his knowledge and runs against his wishes:
Answer: Virus
Explanation: A virus is malicious code that loads onto a computer without the user's knowledge and executes against the user's wishes, often replicating and causing harm.
Q5. Mac OS offers Time Machine for data backup.
Answer: Time Machine
Explanation: Time Machine is Apple's built-in backup feature for macOS, automatically creating incremental backups of files to an external drive.
Q6. The slowest response when collecting data is from:
Answer: Email
Explanation: Email is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.
Q7. Which of the following is a single-user operating system?
Answer: MS-DOS
Explanation: MS-DOS is a single-user, single-tasking operating system designed for one user at a time with no built-in support for multiple simultaneous users.
Q8. Who is known as the father of the microprocessor?
Answer: Marcian Edward Ted Hoff
Explanation: Marcian "Ted" Hoff, working at Intel, is credited as the father of the microprocessor for his key role in designing the Intel 4004 in 1971.
Q9. _____ allows going from one web page to another web page.
Answer: Hyperlink
Explanation: Hyperlink is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.
Q10. An area of a computer that temporarily holds data waiting to be processed is:
Answer: Memory
Explanation: Memory (RAM) temporarily holds data and instructions that are actively being processed by the CPU before being written to storage.
Q11. Which programming languages are classified as low-level languages?
Answer: Assembly language
Explanation: Assembly language is classified as a low-level language because it uses symbolic mnemonics that directly correspond to machine code instructions for specific hardware.
Q12. In MS Word 2016, to extend a selection to one line up, press which keys from the keyboard?
Answer: Shift+Up Arrow
Explanation: Shift+Up Arrow is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.
Q13. To advance rightward from one cell to the next in a table, press the Tab key.
Answer: Tab
Explanation: Pressing Tab in a Word table moves the cursor to the next cell to the right, enabling efficient data entry across columns.
Q14. Which is represented from high level to low level in C++, COBOL, JAVA, etc.?
Answer: Software
Explanation: Software is the right answer. This tests practical computer literacy expected in clerical, banking, and IT operator recruitment papers.
Q15. DOS cannot retrieve any data from a disk if a computer virus corrupts its:
Answer: File Allocation Table (FAT)
Explanation: DOS uses the File Allocation Table (FAT) to track the location of all files on a disk; if the FAT is corrupted, the OS cannot locate or retrieve any data.
Q16. The latest MS Windows is:
Answer: Window 11
Explanation: Windows 11 is the latest version of Microsoft Windows, released in October 2021, with a redesigned Start menu and improved performance.
Q17. To move a copy of a file from one computer to another over a communication channel is called:
Answer: File transfer
Explanation: File transfer is the process of copying a file from one computer to another over a communication channel such as a network or the internet.
Q18. Which key is used to move from one cell to another in MS Excel?
Answer: Tab
Explanation: Pressing Tab moves the active cell one cell to the right in Excel, allowing quick horizontal navigation across a row.
Q19. Which shortcut key is used to open Task Manager in Windows 10?
Answer: Ctrl + Shift + Esc
Explanation: Ctrl+Shift+Esc directly opens the Task Manager in Windows 10, providing quick access to running processes and system performance data.
Q20. The printed output from a computer is called?
Answer: Hard copy
Explanation: Printed output from a computer is called a hard copy because it is a physical, tangible document as opposed to a soft copy on screen.
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