Operating System — Winter 2025

1. What is an operating system?

interface between the hardware and application programs

collection of programs that manages hardware resources

system service provider to the application programs

all of the mentioned 2. Multiprogramming increases CPU efficiency by allowing multiple programs to be in memory simultaneously. (True/ False) 3. In a ______, the CPU rapidly switches between multiple processes, giving the illusion of simultaneous execution. 4.Which one of the following is the deadlock avoidance algorithm?

banker’s algorithm

round-robin algorithm

elevator algorithm

karn’s algorithm 5. An operating system deadlock occurs when a set of processes are blocked. (True/False) 6. To create a file ____________.

allocate the space in file system

make an entry for new file in directory

allocate the space in file system & make an entry for new file in directory

none of the mentioned 7. Full form of FAT.

Give the Difference Between Traditional UNIX Systems & Modern UNIX Systems.

Define Process. Explain Process state in detail.

Define Thread. Explain Types of Threads in detail.

What is need of Execution of the OS? Explain in brief. Page 1 of

Explain Principles of Concurrency in detail.

What is deadlock? How it detects and how it can be prevented?

Discuss Readers/Writers Problem.

Explain Dining Philosophers Problem with example.

Explain Memory Paging & Segmentation in detail.

Explain Page Replacement Algorithm.

Define Swapping. What is need of it in the Operating System?

Explain CPU Scheduling Algorithm in detail.

Discuss the importance and application of buffering in File I/O.

What do you mean by RAID Structure? Also discuss different types of RAID levels.

Explain how the operating system manages File I/Ooperations?

What do you mean by directory structure? Also discuss different types of directory structures. Page 2 of