Preparing for the Class 10 Computer Science & Entrepreneurship 2026 Punjab Board exams? These Chapter 1 – Operating System (1.6 System Calls) MCQs are taken directly from the PECTAA Class 10 Computer Science textbook based on the 2026 New Syllabus.
These important multiple-choice questions help students understand system calls, improve conceptual knowledge, and practice board-style questions for exams. Solve these topic-wise MCQs to boost your confidence and achieve better marks in the annual board examination.
1.6 System Calls
A system call is a request made by a program to the operating system to perform a specific task that the program cannot do directly. They act as a bridge between user programs and the kernel, allowing applications to access hardware and core OS functions safely. Without system calls, programs that directly control hardware can be unsafe and complex.
Example: When you save a file in a text editor, the program uses a system call to tell the operating system to write the data to the storage drive(like a Hard drive).
1.6.1 Types of System Calls
The main types of system calls include:
- open Opens a file for reading or writing. Example: Opening a music file to play.
- read Retrieves data from a file or input device. Example: Reading text from a document.
- write Sends data to a file or output device. Example: Saving an image to the computer.
- fork Creates a new process by duplicating an existing one. Example: Opening a new browser tab, where the OS may use fork to create another process.
DO YOU KNOW?
Linux and macOS have a few hundred system calls, while Windows uses nearly 2,000. These calls handle everything from opening files to running apps and showing graphics in the background while you work.
Complete 10th Class Chapter 1 OS New Syllabus 2026 MCQs with Answers
1.1 Introduction to Operating System
1.2 Architecture of Operating System
1.3 Process Management in Operating System
1.7 File System Structure and Management
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