Objective and function, The evaluation of the operating system, system components operating system services, system structure, batch interactive, time sharing and real time operating system, Protection, File system, File concepts, file organization and access mechanism, directory.

Process concepts, principal of concurrency, the producer consumer problem, the critical section problem, semaphore, classical problem in concurrency, inter process communication, process generation, Process scheduling.

Scheduling concepts, performance criteria scheduling algorithms, algorithm evaluation, multiprocessor schedulling, I/O management and Disk scheduling, I/O devices and organization of the I/O functions, I/O buffering disk, I/O operating system design issues.

System models, deadlock characterization, prevention, avoidance and detection recovery from deadlock, combined approach.

Base machine, Residence monitor, multiprogramming with fixed partition, multiprogramming with variable partitions, multiple base register, paging, segmentation, paging segmentation, virtual memory concepts, demand paging performance, page replacement algorithms, allocation of frames, thrashing, cache memory organization impact on performance.