Computer Software and Operating Systems MCQ - Part 3
50 Software & OS MCQs with Detailed Explanations | Windows, Linux, Application Software | CCC, Banking, SSC Exam Preparation
1What is the main function of an operating system?
Answer: B
Operating system manages memory, processes, files, and peripheral devices.
2Which of these is an example of system software?
Answer: B
System software includes operating systems, device drivers, and utilities.
3What does GUI stand for?
Answer: A
GUI replaced command-line interfaces, making computers more user-friendly.
4Which operating system is open-source?
Answer: C
Linux is widely used in servers, supercomputers, and embedded systems.
5What is the purpose of a device driver?
Answer: B
Each hardware component requires specific drivers to function properly.
6Which company developed Windows operating system?
Answer: C
Windows was first released in 1985 and dominates the desktop OS market.
7What is application software?
Answer: B
Examples include word processors, spreadsheets, and web browsers.
8Which of these is a mobile operating system?
Answer: C
Android is based on Linux kernel and is the most popular mobile OS.
9What does OS stand for?
Answer: A
Without an OS, computer hardware cannot function.
10Which function is NOT performed by an operating system?
Answer: C
OS manages resources, while applications perform specific user tasks.
11What is multitasking in operating systems?
Answer: B
The OS switches between tasks rapidly, giving the illusion of simultaneous execution.
12Which file system is commonly used in Windows?
Answer: B
NTFS supports large files, security features, and better reliability than FAT32.
13What is the kernel in an operating system?
Answer: B
Kernel has complete control over everything in the system.
14Which of these is an example of utility software?
Answer: B
Other utilities include disk cleaners, backup tools, and file compression software.
15What does BIOS stand for?
Answer: A
BIOS performs Power-On Self-Test (POST) and loads the bootloader.
16Which operating system is used in Apple computers?
Answer: C
macOS is known for its sleek interface and integration with Apple ecosystem.
17What is virtual memory?
Answer: B
This allows running more applications than physical RAM could normally handle.
18Which of these is a command-line interface?
Answer: C
Command-line interfaces are faster for experienced users but have a steeper learning curve.
19What is the purpose of task manager in Windows?
Answer: B
It can be opened by pressing Ctrl+Shift+Esc or Ctrl+Alt+Delete.
20Which programming language is Windows primarily written in?
Answer: C
C++ provides the performance and low-level control needed for operating system development.
21What is the function of an assembler?
Answer: A
Assembly language is a low-level programming language close to machine code.
22Which of these is a single-user operating system?
Answer: A
Single-user OS allows one user to access computer resources at a time.
23What does API stand for?
Answer: A
APIs define how software components should interact.
24Which operating system uses the Finder application?
Answer: C
Finder helps users navigate and manage files on Mac computers.
25What is the purpose of a compiler?
Answer: B
Compiled programs generally run faster than interpreted ones.
26Which file system is used by Linux?
Answer: C
EXT4 offers better performance and reliability for Linux systems.
27What is firmware?
Answer: B
BIOS is an example of firmware that initializes hardware during boot.
28Which of these is a multi-user operating system?
Answer: C
Multi-user OS are common in servers and mainframes.
29What is the function of an interpreter?
Answer: B
Python and JavaScript are examples of interpreted languages.
30Which Windows version introduced the Start Menu?
Answer: B
The Start Menu revolutionized how users accessed programs and files.
31What is open-source software?
Answer: B
Linux, Firefox, and LibreOffice are popular open-source software.
32Which key combination opens Task Manager in Windows?
Answer: D
Ctrl+Shift+Esc directly opens Task Manager, while Ctrl+Alt+Delete shows options menu.
33What is the purpose of device drivers?
Answer: B
Each hardware component requires specific drivers to function properly.
34Which programming language is Android OS based on?
Answer: C
Android SDK provides Java libraries for app development.
35What is system software?
Answer: B
System software provides platform for application software to run.
36Which operating system uses the Terminal application?
Answer: B
Terminal provides access to Unix shell in macOS.
37What is the purpose of virtual memory?
Answer: B
This technique enables running more applications than physical memory allows.
38Which file extension indicates an executable program in Windows?
Answer: B
EXE files contain machine code that operating system can execute directly.
39What is the role of kernel in operating system?
Answer: B
Kernel has complete control over all system resources.
40Which operating system is developed by Google?
Answer: C
Chrome OS is designed primarily for web applications and cloud computing.
41What is the function of an operating system's scheduler?
Answer: B
This enables multitasking by rapidly switching between processes.
42Which of these is a real-time operating system?
Answer: B
Real-time OS guarantee response within strict time constraints.
43What is the purpose of system utilities?
Answer: B
Examples include disk cleanup, defragmentation, and backup tools.
44Which operating system introduced the Windows Store?
Answer: B
Windows Store provides a centralized platform for downloading applications.
45What is the difference between compiler and interpreter?
Answer: B
Compiled programs run faster, while interpreted programs are more portable.
46Which Linux distribution is most popular for beginners?
Answer: A
Ubuntu provides a smooth transition for Windows and macOS users.
47What is the purpose of plug and play technology?
Answer: B
This eliminates manual driver installation for most common devices.
48Which operating system uses the Windows Explorer file manager?
Answer: C
File Explorer helps users navigate through files and folders in Windows.
49What is the function of an operating system's memory manager?
Answer: B
This ensures efficient memory usage and prevents conflicts between applications.
50Which operating system is known for its penguin mascot?
Answer: C
Tux was created by Larry Ewing and represents the Linux community.
