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#Video Link https://drive.google.com/file/d/1TKz2... #OPERATING SYSTEM IMPORTANT QUESTIONS – DCCA-403 IV Semester B.C.A. Degree Examination, July/August 2024 DSC 12: #Operating System Concepts (#NEP Scheme – Freshers and Repeaters) Time: 2 Hours Max Marks: 60 #Long Answer / Conceptual Questions #1. What is operating system? Explain Computer System organization. #2. Explain the types of operating System with Diagrams. #3. Explain the Functions and System calls of Operating system. #4. Explain PCB with diagram. #5. What is Process? Explain different Process States. #6. Explain Different types of Schedulers with diagram. #7. Explain Inter process Communication with diagram. #8. Explain the following Scheduling algorithms with suitable examples (Problems given in Class): #a. FCFS #b. SJF #c. Round Robin #9. Explain Critical Section and Peterson's Solution with Example program block. #10. Explain Semaphores with code block. #11. Explain Readers and Writers Problem, Dining Philosophers Problem (VV imp). #12. What is Dead Lock? Explain the Dead handling Methods. #13. Explain Bankers Algorithms with Suitable Example (Problem given in class). Exam Pattern Questions – July/August 2024 SECTION-A (6x2=12 Marks) #1) Mention the different operating system components #2) What is the difference between multi-tasking and multi-user system? #3) What is scheduling? #4) What is mutual exclusion? #5) What are the necessary conditions for deadlock? #6) What is aging? #7) What is virtual memory? #8) What is demand paging? #9) Mention any four file operations SECTION-B (4x6=24 Marks) #10) What is operating system? Give four functions of operating system #11) What is process? Draw a process state transition diagram and explain #12) Explain the requirement to critical section problems #13) Explain Banker’s algorithm #14) Explain FIFO page replacement algorithm with an example #15) What are different file accessing methods? Explain SECTION-C (3x8=24 Marks) #16) a) Explain Process Control Block b) Write a note on system calls #17) a) Multiprocessor scheduling b) Real-Time CPU Scheduling #18) Explain deadlock detection and recovery algorithms #19) a) Write a short note on Thrashing b) What is virtual memory? Explain #20) a) Explain file allocation methods b) Explain directory structures IV Semester B.C.A. Exam – Sept/Oct 2023 #Operating System Concepts (#NEP – Freshers) Time: 2.15 Hours Max Marks: 60 SECTION-A (6x2=12 Marks) #1) What is an operating system? #2) What is inter-process communication? #3) What is a thread? #4) What is pre-emptive scheduling? #5) What is race condition? #6) What is semaphore? Mention its types #7) Define logical and physical address #8) What is dynamic loading? #9) List the various file attributes SECTION-B (4x6=24 Marks) #10) Explain functions of an operating system #11) Explain the different types of threads #12) Consider the following processes with their CPU burst time in milliseconds and arrival time = 0: Process: P1, P2, P3, P4 CPU Burst: 10, 1, 2, 5 Draw the Gantt chart using FCFS and calculate: i) Average waiting time ii) Average turnaround time #13) Explain methods for handling deadlocks #14) Write a note on segmentation #15) Explain any two directory structures SECTION-C (3x8=24 Marks) #16) a) Explain time sharing and real time operating system b) Write a note on operating system calls #17) a) Write a note on schedulers b) Explain Round Robin scheduling with example #18) a) Write a note on threading issues b) Write a note on scheduling criteria #19) a) What is fragmentation? Explain the types of fragmentation b) Explain dining philosopher problem using semaphore #20) a) Explain FIFO page replacement algorithm with example b) What is file accessing method? Explain sequential file access methods