Total No. of Questions 18] [Total No. of Pages 02
M.C.A. DEGREE EXAMINATION, MAY 2018
First Year
OPERATING SYSTEMS
Time 3 Hours Maximum Marks :70
SECTION A
Answer any three of the following questions. x 15 45)
Q1) Explain the various types of operating systems.
Q2) Explain implementation of producer's/Consumers problem using monitor.
Q3) What is paging? Discuss the various page replacement strategies.
Q4) Write about the following in detail:
Disk structure
ii) Indexed allocation
iii) Shortest-Seek-Time-First (SSTF) scheduling.
Q5) Discuss about various threats are detecting prevented by the operating system.
SECTION B
Answer any five of the following questions. x 4 20)
Q6) Describe different process states with neat diagram.
Q7) Explain about shortest job first scheduling algorithm with example.
Q8) Write about internal and external fragmentation.
Q9) Explain about overlays.
Q10) Explain the page fault handling routine with diagram.
Q11) Write short notes on kernel I/O subsystem.
Q12) State the various attributes of file and their purpose.
Q13) Explain the terms worm and viruses with example.
SECTION C
Answer all of the following questions. x 1
Q14) What is turnaround time of process scheduling?
Q15)Define segmentation.
Q16) Define critical section.
Q17) Define demand paging.
Q18) Define deadlock.