Category: Computer Science MCQs FPSC NTS PPSC Computer Past Papers Test Questions

(A) Compiling code
(B) Managing hardware and software resources
(C) Managing applications resources
(D) Managing software resources

The answer is: (B) Managing hardware and software resources
The main function of an operating system (OS) is to act as an intermediary between the user and the computer’s hardware. It manages all the computer’s resources, including the central processing unit (CPU), memory, storage, and input/output devices. The OS ensures that different programs and applications can run smoothly and securely without interfering with each other.

(A) Python
(B) Java
(C) C
(D) Assembly

The answer is: (C) C
The C programming language is often referred to as the “mother of all programming languages” because it laid the foundation for many modern languages like C++, Java, C#, and Objective-C. Besides, it introduced core programming concepts such as structured programming, pointers, and low-level memory access.

(A) USB (Universal Serial Bus)
(B) HDMI (High-Definition Multimedia Interface)
(C) VGA (Video Graphics Array)
(D) None of these

The answer is: (A) USB (Universal Serial Bus)

(A) R
(B) C++
(C) Matlab
(D) Python

The answer is: (D) Python

(A) Windows
(B) Macintosh
(C) Linux
(D) Android

The answer is: (A) Windows
Microsoft windows is the most popular computer operating system in the world.

(A) Data Register
(B) Instruction Register
(C) Data Address Register
(D) Accumulator Register

The answer is: (D) Accumulator Register

(A) Mouse
(B) Keyboard
(C) Printer
(D) Light Pen

The answer is: (C) Printer

(A) Flowchart
(B) ERD
(C) DFD
(D) Algorithm

The answer is: (B) ERD (entity relationship diagram)