Total No. of Questions 18] [Total No. of Pages 2
M.Sc. DEGREE EXAMINATION, MAY 2018
First Year
INFORMATION TECHNOLOGY
OPERATING SYSTEMS
Time 3 Hours Maximum Marks 70
SECTION A × 15 45)
Answer any THREE questions
Q1) Explain various managements of operating systems and their responsibilities in detail.
Q2) Solve the following problem by using following scheduling algorithms.
Process Burst Time Priority
P1 10 3
P2 1 1
P3 2 3
P4 1 4
P5 5 2
FCFS
ii) SJF
iii) Round Robin
Q3) Write about the techniques for structuring the page table.
Explain file system architecture with neat sketch.
Q4) Explain three major methods of allocating disk space.
Q5) Discuss about authentication and identification issues in operating systems.
SECTION B × 4 20)
Answer any five questions
Q6) What are multiprocessor systems? Describe different types of multiprocessing?
Q7) State and explain different process states.
Q8) Describe various process attributes.
Q9) What is demand paging and what is its use?
Q10) State and describe causes of deadlocks.
Q11) What is virtual memory? Mention the advantages of virtual memory.
Q12) Write about the kernel I/O subsystem.
Q13) Describe different program threats.
SECTION C × 1
Answer all questions
Q14) What is the use of fork and exec system calls?
Q15) Define throughput.
Q16) Define Critical section.
Q17) Define page fault.
Q18) Define segmentation.