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Syllabus of OPERATING SYSTEM (NCS-401):

Unit – I
Introduction : Operating system and functions, Classification of Operating systems- Batch,
Interactive, Time sharing, Real Time System, Multiprocessor Systems, Multiuser Systems,
Multiprocess Systems, Multithreaded Systems, Operating System Structure- Layered structure,
System Components, Operating System services, Reentrant Kernels, Monolithic and Microkernel
Unit – II
Concurrent Processes: Process Concept, Principle ofConcurrency, Producer / Consumer
Problem, Mutual Exclusion, Critical Section Problem, Dekker’s solution, Peterson’s solution,
Semaphores, Test and Set operation; Classical Problem in Concurrency- Dining Philosopher
Problem, Sleeping Barber Problem; Inter Process Communication models and Schemes, Process
Unit – III
CPU Scheduling: Scheduling Concepts, Performance Criteria, Process States, Process Transition
Diagram, Schedulers, Process Control Block (PCB), Process address space, Process
identification information, Threads and their management, Scheduling Algorithms,
Multiprocessor Scheduling. Deadlock: System model, Deadlock characterization, Prevention,
Avoidance and detection, Recovery from deadlock.
Unit – IV
Memory Management: Basic bare machine, Resident monitor, Multiprogramming with fixed
partitions, Multiprogramming with variable partitions, Protection schemes, Paging,
Segmentation, Paged segmentation, Virtual memory concepts, Demand paging, Performance of
demand paging, Page replacement algorithms, Thrashing, Cache memory organization, Locality
of reference.
Unit – V
I/O Management and Disk Scheduling: I/O devices, and I/O subsystems, I/O buffering, Disk
storage and disk scheduling, RAID. File System: File concept, File organization and access
mechanism, File directories, and File sharing, Filesystem implementation issues, File system
protection and security.

References :
1. Silberschatz, Galvin and Gagne, “Operating Systems Concepts”, Wiley
2. SibsankarHalder and Alex A Aravind, “Operating Systems”, Pearson Education
3. Harvey M Dietel, “ An Introduction to Operating System”, Pearson Education
4. D M Dhamdhere, “Operating Systems : A Concept basedApproach”, McGraw Hill. 5. Charles Crowley, “Operating Systems: A Design-Oriented Approach”, Tata McGraw Hill Education”. 6. Stuart E. Madnick & John J. Donovan. Operating Systems. McGraw Hill.

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