• Attempt any five questions.
• All questions carry equal marks.
Explain the different types of services in Operating system and its features.
Define the Utility programs with example. Explain system call.
What is Process? Explain the process states diagram.
Solve using preemptive priority scheduling algorithm for given processes. Draw Gantt chart and calculate Average waiting time and Turnaround time.
Consider the given resource allocation graph. Find if the system is in a deadlock state otherwise find a safe sequence.
Difference between Deadlock and Starvation. Explain the necessary Condition for Deadlock.
Explain the types of Semaphores in process synchronization.
What are the different criteria for evaluating the CPU scheduling algorithm?
Consider system with byte-addressable memory, 32-bit logical addresses, 4KB page size, 4-byte page table entries. Find page table size in MB.
Describe fixed and variable partitioned contiguous memory allocation scheme with merits and demerits.
Disk requests for cylinders 10,22,20,2,40,6,38 at cylinder 20. Find total seek time for FCFS and SCAN (6ms/cylinder).
How many types of disk allocation methods? Describe Indexed method with merits and demerits.
Explain the deadlock recovery in brief.
Explain the I/O buffering and Interrupt driven operation in short.
Write short notes on (any two): a) Distributed OS b) Multiprocessor OS c) Network OS d) Paged Segmentation.
