CLASS IX WORKSHEET 10 JULY 2026

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Worksheet

Class IX

    Computer Applications

 

Basics of Operating Systems

 1.      Name any two popular operating systems?

Ans1. Windows 7, Linux

 

2.     What is operating system?

Ans2. An operating system is a program, which acts as an interface between a user and the hardware (i.e. all computer resources).

For e.g. Windows 7, MS DOS etc.

3.     Write the full forms-

a.       MS DOS- Microsoft Disk Operating System

b.      MAC OS- Macintosh Operating System

 

   4. Explain Kernel and shell?

 Operating Systems- 

the kernel and shell are considered the two main components of an operating system

   Operating system has broadly two components: Shell and Kernel.

v  The shell part is responsible for interacting with the users and

v  The kernel part is responsible for interacting with hardware.

 

  The shell act as the interpreter which does these things:

i.              Get the commands/instructions from the user.

ii.             Translate the received commands / instructions into the machine language.

iii.            Pass the translated command to the Kernel to get it done.

  The Kernel is the core part of an operating system. It functions at a basic level,    

  communicating with the actual hardware and managing resources such as CPU   

  and the memory.


Answer the following questions:-

1.    Identify the following logos and write their names.


The logos in the image represent the following operating systems:

·         Top Left: Linux (represented by its mascot, Tux the penguin)

·         Top Right: Microsoft Windows

·         Bottom Left: Android

·         Bottom Right: Apple (the classic rainbow logo)

     

2.    Name a mobile company that uses the following operating system.

i.              Android

ii.             Symbian

iii.            IOS

iv.           Windows Mobile

  Ans-  i. Android: Samsung, Xiaomi, Motorola, OnePlus, and Google.

               ii. Symbian: Primarily Nokia, but it was also used in select models by companies such as   

                  Samsung, Motorola, Sony Ericsson, Fujitsu, and Sharp.

              iii. iOS: Apple (exclusively for its iPhone line of smartphones).

               iv. Windows Mobile: Various manufacturers produced devices for this platform, including

                    HTC, Samsung, HP, Lenovo, Dell, and Palm.


3.    Give two examples of GUI based operating system.

Ans- Microsoft Windows and macOS


4.    Name the latest version of Windows operating system.

Ans- As of July 2026, the latest version of the Windows operating system is Windows 11.

 

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