Basics of os worksheet solution

 Computer Applications Class IX Basics of Operating Systems (Chap 4)
Worksheet 06 SOLUTION (chap 4) Aug 2020:-


1. Multiple choice questions:-
i. When the computer has to react within a guaranteed time to an input, which type of operating system is best?
a. Multi-tasking b. Real time processing c. Batch Processing
ii. Which type of operating system allows multiple tasks to run at the same time, each taking turns using the resources of the computer?
a. Real- time processing b. batch processing c. multi-tasking
iii. Which of the following is NOT an operating system?
a. Linux b. Windows XP c. Bendix
2. What are the different types of operating systems?
Ans2. The operating systems are of mainly following types:
i. Single User OS
ii. Multiprogram OS
iii. Time Sharing OS
iv. Real time OS
v. Multiprocessing OS
3. What is Multi-user system?
Ans3. A Multi-user system is a computer system designed to be used simultaneously by more than one user. A system that enable more than one user to access the same data at the same time.
4. Write a short note on Device Driver.
Ans4. A device driver is a group of files that enable one or more hardware devices to
communicate with the computer’s operating system.
Each hardware device installed on a computer requires a different type of device
driver or hardware driver. The device driver provides specific instructions to the
operating system in order for the hardware device to perform properly.
5. Explain Time Sharing Operating System?
Ans5. This OS uses the time sharing technique. Each active user program is given a fair
share of CPU time, if the time elapses or and I/O operation is requested, CPU shifts
over to the next job waiting and the previous program is put to wait or handed over to
I/O manager. The active programs are scheduled for execution using certain job
scheduling techniques.
Eg. BSD Unix, NOS/VE, Genie etc.
SADHU SINGH
T.G.T Computer


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