Dear students here we provide notes for Anna university 4TH sem Subject CS OPERATING SYSTEM notes pdf. you can download the OS notes as per the. Class lecture notes for second Year,fourth semester Operating Systems (Subject Code: CS) is available here in PDF formats for you to. Why is the Operating System viewed as a resource allocator & control program? 3. What is ii) Write short notes on co-operating process and schedulers. (8).

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Define logical address and physical address. What are the allocation methods of a disk space? Explain the various disk scheduling techniques 3.

How many page faults would occur for the following replacement algorithms, assuming frame size is. What is real time system? Explain about the methods used to prevent deadlocks 7. Explain in detail about swapping and thrashing. What are the benefits OS co-operating processes?


cs2254 operating system question paper pdf

Write in detail about file concept. What is low-level formatting? What are conditions under which a deadlock situation may arise?

What is process control block? What is meant by context switch? Anna University – B.

What do you mean by system calls? Explain about Multi-Threading Models. Write in detail about File-System Implementation. What is Look Scheduling? Define busy waiting and spin lock. What is a resource-allocation graph? List the various file attributes. What is the operatig of boot block? What are the most common schemes for defining the logical structure of a directory? Explain the various types of computer systems. Write notes about disk management and swap-space management.

CS Operating System Lecture notes – Dhilip Edition

What is the basic approach of page replacement? Write about critical regions and monitors. What is a pure demand paging? Give the basic concepts about paging. What are the methods for handling deadlocks?


Compare user threads and kernel threads. What are the benefits of multithreaded programming? How to request Study Material?

Define rotational latency and disk bandwidth. What is virtual memory?

Give a detailed description about deadlocks and its characterization.