• Attempt any five questions.
• All questions carry equal marks.
Describe the main functions of an operating system in managing hardware and software resources.
Define System calls. Discuss the challenges associated with low-level implementation and portability issues of system calls.
Explain the organizing and file system creation involved in disk formatting. What problems might arise in contiguous allocation when the file storage?
A system uses contiguous allocation for files on a disk with 1000 blocks. If a file requires 200 blocks starting from block 10, calculate the ending block number.
Define a process and explain its different states with the help of a process state diagram.
Discuss the scheduling challenges in a multiprocessor system.
A system uses Round-Robin scheduling with a time quantum of 5 ms. If three processes arrive simultaneously with burst times of 10 ms, 20 ms and 30 ms, calculate the completion time for each process.
Describe the concept of paging and how it helps in memory management. If a process requires 4 pages and a page size of 1 KB each, calculate the total memory required.
Define Virtual Memory. Discuss its importance in modern operating systems.
Differentiate between synchronous and asynchronous I/O operations.
Explain the role of the Kernel I/O Subsystem in an operating system. Discuss how I/O requests are transformed into hardware operations.
What are the desirable characteristics of a modern operating system?
Describe the concept of file protection and access control in operating systems.
Define Deadlock and explain the necessary conditions for a deadlock to occur.
Explain how memory management is implemented in Unix/Linux operating systems.
Define dynamic linking and loading. Why is it useful in virtual memory systems?
Define Virtualization and its applications in operating systems.
