Class 9 Computer Science Chapter 2 SEBA : Operating System and Its Importance – Question Answers

Class 9 Computer Science Chapter 2 SEBA, Operating System and Its Importance, Operating System and Its Importance class 9 seba computer science, Class 9 Computer Science Chapter 2 question answers seba, chapter 2 computer science class 9 seba

Welcome to the ultimate study guide for Class 9 Computer Science Chapter 2 SEBA: Operating System and Its Importance. Here, you will find complete SEBA textbook solutions, short notes, long question answers, and practice MCQs. Designed strictly according to the latest Board of Secondary Education, Assam (SEBA) syllabus, this page helps students easily understand key operating system concepts like GUI vs CLI, process management, memory allocation, and OS types (Windows, Linux, Android, and BOSS).

Operating System – MCQs, Fill in the Blanks and True or False

This post contains important Operating System questions and answers for SEBA Class 9 Computer Science. It includes multiple-choice questions, fill in the blanks, and true or false questions for exam preparation.

Class 9 Computer Science Chapter 2 SEBA, Operating System and Its Importance, Operating System and Its Importance class 9 seba computer science, Class 9 Computer Science Chapter 2 question answers seba, chapter 2 computer science class 9 seba

Computer Science : Class 9 : Chapter 2 : Operating System and Its Importance : Exercises Question Answers :

1. Choose the Correct Option

(a) Which of the following is an operating system?

Windows
Linux
Unix
All of these

Ans: (4) All of these

Windows, Linux, and Unix are operating systems.

(b) Which operating system is developed by C-DAC, Chennai?

Windows
BOSS
Unix
None of these

Ans: (2) BOSS

BOSS (Bharat Operating System Solutions) is a GNU/Linux distribution developed by C-DAC.

(c) Which OS has a fixed deadline?

Distributed
Real-time
Interactive
Batch Processing

Ans: (2) Real-time

A real-time operating system completes tasks within a specified time or deadline.

(d) Name a multi-user operating system.

MS-DOS
BOSS
Unix
None of these

Ans: (3) Unix

Unix is a multi-user operating system. Its development began at Bell Labs in 1969.

(e) Name a version of macOS.

Mojave
High Sierra
Sierra
All of these

Ans: (4) All of these

Mojave, High Sierra, and Sierra are versions of macOS.

(f) In which year was Windows OS released?

1980
1985
1983
1987

Ans: (2) 1985

Microsoft shipped the retail version of Windows on 20 November 1985. Microsoft had announced Windows earlier, in 1983.

Class 9 Computer Science Chapter 2 SEBA, Operating System and Its Importance, Operating System and Its Importance class 9 seba computer science, Class 9 Computer Science Chapter 2 question answers seba, chapter 2 computer science class 9 seba

2. Fill in the Blanks

(a) ______ is the founder of Microsoft Corporation.

Ans: Bill Gates

(b) An operating system is a program which acts as an ______ between a user and the hardware.

Ans: interface

(c) The operating system decides which job should use the ______ and for how long.

Ans: processor

(d) A computer system works with ______.

Ans: information

(e) Windows is an example of ______ operating system.

Ans: GUI (Graphical User Interface)

(f) Unix was originally developed in ______ by a group of AT&T employees.

Ans: 1969

UNIX development began at Bell Labs in 1969.

3. State True or False

(a) Microsoft Windows has 15 versions since its first release in 1985.

Ans: False

(b) Linux is different from proprietary software like Windows, which can be modified by the company that owns it.

Ans: True

(c) iOS is Apple’s mobile operating system.

Ans: True

(d) The latest version of Android is Unnati.

Ans: False

Unnati is associated with BOSS, not Android.

(e) Windows comes pre-loaded on most new PCs.

Ans: True

(f) macOS is Apple’s mobile operating system.

Ans: False

macOS is Apple’s operating system for Mac computers. iOS is Apple’s mobile operating system.

4. Short Question Answers :

1. What is an Operating System?

Ans. An operating system is system software that manages the hardware and software of a computer. It also helps the user to interact with the computer.

2. Mention the names of any two commonly used operating systems.

Ans. Two commonly used operating systems are:

Windows
iOS

3. When was the first version of Apple iOS released?

Ans. The first version of Apple iOS was released on 29 July 2007.

4. What do you mean by multitasking?

Ans. Multitasking is a feature of an operating system that allows a user to perform more than one task at the same time.

5. What is a real-time operating system?

Ans. A real-time operating system completes tasks within a fixed time limit or deadline.
Examples: LynxOS and Windows CE.

6. What is time-sharing and distributive operating system?

Ans.

Time-Sharing OS: It allows multiple users or programs to use the computer’s resources by giving each one a small amount of CPU time.

Distributive OS: It uses multiple computers to share data, resources, and workload to complete tasks efficiently.

5. Long Question Answers :

1. Explain any two functions of an Operating System.

Ans.

Processor Management:
The operating system manages the CPU. It decides which program will use the processor and for how much time. It gives the processor to different programs when required.

Memory Management:
The operating system manages the main memory (RAM). It keeps track of free and used memory. It gives memory to programs when needed and releases it after the work is completed.

2. Explain any two operating systems used in mobile phones.

Ans.

Android:
Android is a mobile operating system based on the Linux kernel. It is mainly used in smartphones and tablets. It supports many applications and provides features such as multitasking and a touch-screen interface.

iOS:
iOS is a mobile operating system developed by Apple. It is mainly used in Apple devices such as the iPhone and iPad. It is known for its security, smooth performance, and easy-to-use interface.

3. Write a short note on Windows operating system.

Ans.
Windows is an operating system developed by Microsoft. It was introduced in the mid-1980s. It provides a graphical user interface (GUI), which makes it easy for users to operate a computer. It supports multitasking, allowing users to run more than one program at a time. Windows is widely used in personal computers, offices, schools, and other organisations.

4. Write a note on the operating systems created by Apple.

Ans.
Apple has developed operating systems such as macOS and iOS.

macOS is used in Macintosh computers. It provides a graphical user interface and is known for its smooth performance and security.

iOS is used in Apple mobile devices such as the iPhone and iPad. It provides a simple and user-friendly interface and is known for its security and smooth performance.

5. What is BOSS?

Ans.
BOSS stands for Bharat Operating System Solutions. It is an operating system developed by C-DAC, Chennai. It is based on the Linux operating system and is free and open-source software. BOSS supports several Indian languages and was developed to promote the use of Indian software. It is used in government offices and educational institutions.

6. Write a short note on Bill Gates.

Ans.
Bill Gates, whose full name is William Henry Gates III, is an American businessman, software developer, and philanthropist. He was born on October 28, 1955. He is one of the founders of Microsoft Corporation. He played an important role in the development and popularity of Microsoft Windows. He is also well known for his charitable and philanthropic activities.

7. What is Interactive Operating System? Where is it used?

Ans.
An Interactive Operating System allows users to communicate directly with a computer. It responds to the commands given by the user and provides quick interaction with the system.

Uses:

It is used in personal computers and laptops.
It is used in operating systems such as Windows and macOS.
It is used in games and simulations.
It is used in applications where regular user interaction is required.

8. What are the two important features that must be taken care of while maintaining a directory?

Ans.

1. Freedom of Naming Files:
A user should be able to give suitable names to files. The system should allow different files to have meaningful and different names.

2. File Sharing and Access:
Users should be able to share files with other users when required. They should also be able to access files created by other users if they have the proper permission.

Related to Class 9 Computer Science Chapters of SEBA:

(SEBA Class 9 Computer Science Chapter 2 – Operating System and Its Importance: This page provides exercise questions and answers, solutions and explanations for SEBA Class 9 Computer Science Chapter 2. The answers are written in simple and easy-to-understand language to help students understand the important concepts and prepare effectively for their examinations.)

Class 9 Computer Science Chapter 2 SEBA – Operating System and Its Importance

Operating System and Its Importance is an important topic in Class 9 Computer Science Chapter 2 SEBA. In this chapter, students learn about operating systems, their functions, types, examples, and importance in a computer system.

These 50 important points are useful for students preparing for Class 9 Computer Science Chapter 2 question answers SEBA and for quick revision before examinations.

Operating System and Its Importance – 50 Important Points

An Operating System (OS) is system software that manages a computer system.
An operating system acts as an interface between the user and computer hardware.
The main purpose of an operating system is to make a computer easy to use and manage.
An operating system manages the hardware and software resources of a computer.
Windows, Linux, Unix, macOS, and BOSS are examples of operating systems.
The operating system manages the processor or CPU of a computer.
It decides which program will use the processor and for how long.
Processor management is an important function of an operating system.
The operating system manages the main memory (RAM) of a computer.
It keeps track of the memory that is free and the memory that is being used.
The OS allocates memory to programs when it is required.
It also releases memory after a program finishes its work.
File management is another important function of an operating system.
The operating system allows users to create, open, copy, move, rename, and delete files.
Files and folders can be organised using directories.
A directory helps users store and organise files in a systematic way.
The operating system controls access to files and other computer resources.
Multitasking is a feature of an operating system.
Multitasking allows a user to perform more than one task at the same time.
Windows is one of the most commonly used operating systems for personal computers.
The first version of Microsoft Windows was released in 1985.
Microsoft developed the Windows operating system.
Linux is a free and open-source operating system.
Linux can be modified and distributed according to its open-source licences.
Unix is a multi-user operating system.
Unix was originally developed at Bell Labs in 1969.
BOSS stands for Bharat Operating System Solutions.
BOSS was developed by C-DAC, Chennai.
BOSS is based on Linux and is available as free and open-source software.
BOSS supports several Indian languages.
macOS is an operating system developed by Apple for Mac computers.
iOS is Apple’s mobile operating system.
iOS is mainly used in Apple mobile devices such as the iPhone.
Android is another popular mobile operating system.
Android is based on the Linux kernel.
A real-time operating system completes tasks within a specified time or deadline.
Real-time operating systems are used where completing a task on time is important.
A time-sharing operating system allows different users or processes to share CPU time.
In a time-sharing system, CPU time is divided into small time slots.
A distributed operating system manages resources and workload across multiple connected computers.
A multi-user operating system allows more than one user to use a computer system.
An interactive operating system allows direct communication between the user and computer.
A proprietary operating system is owned and controlled by a company or organisation.
Microsoft Windows is an example of a proprietary operating system.
The operating system provides a user interface through which users interact with the computer.
A Graphical User Interface (GUI) allows users to interact with a computer using windows, icons, menus, and buttons.
An operating system also manages input and output devices such as keyboards, mice, printers, and storage devices.
The operating system provides security and access control to protect data and computer resources.
An operating system helps different programs share computer resources properly and efficiently.
Therefore, the Operating System and Its Importance can be understood as the role of the OS in managing computer resources and providing an easy way for users to interact with the computer.