basics of os worksheet 1

 Computer Applications
Class IX



Basics of Operating Systems
(Chap 4)
Worksheet 04 (chap 4) Aug 2020:-
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 eg. Windows 7, MS DOS etc.
3. Write the full forms-
a. MS DOS- Microsoft Disk Operating System
b. MAC OS- Macintosh Operating System
4. Describe any two roles of an operating system?
Ans4. Two roles of an operating system are-
1. Program execution- The command interpreter is a part of any operating system. It receives the commands from any application or system program, interprets it and then executes it.
2. Providing user interface - A user interface refers to the way an operating system interacts with its users. An operating system has two parts: kernel and shell. The kernel is responsible for interacting with hardware and the shell is responsible for interacting with the user. The shell acts as the command interpreter which takes the commands from the user, interprets them and takes action accordingly. Shell provides the user interfaces.
5. What are the major components of a computer system?
Ans5. Major components of a computer system are:-
1. The Hardware 2. The Operating System
The Application Software 4. The Humanware (users)
SADHU SINGH
T.G.T Computer

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