Kerala University 2009 B.C.A Computer Application Fourth Semester , , 405 : OPERATING SYSTEMS - Question Paper
Saturday, 01 June 2013 05:05Web
*2626* (Pages : 2) 2626
Reg. No. : ...................................
Name : ........................................
Fourth Semester B.C.A. Degree Examination, May 2009
BCA 405 : OPERATING SYSTEMS
(2007 Scheme)
Time: three Hours Max. Marks: 75
part – A (Answer any 10 ques.. every ques. carries three marks.)
A. 1) discuss any 3 functions of an operating system.
2) What is the difference ranging from Hard and Soft real-time systems ?
3) Differentiate ranging from multiprogramming and time sharing.
4) What is the use of a Process Control Block (PCB) ?
5) What is a deadlock ? How is it various from starvation ?
6) Distinguish ranging from paging and segmentation.
7) Explain the term demand paging.
8) What are semaphores ? Why are they used ?
9) What is a disk cache ?
11) Discuss various methods of disk space allocation.
12) Distinguish ranging from preemptive and non-preemptive process scheduling.
13) What do you understand by the term "record blocking" ?
14) Explain any 3 states of a process.
P.T.O.
2626 *2626*
part – B
(Answer any five ques.. every ques. carries six marks.)
B. 1) What is a system call ? define various kinds of system calls.
2) What resources are used when a thread created ? How do they differ from those when a process is created ?
3) What is situation Switch ? elaborate the steps taken by the Operating system when a situation switch occurs ?
4) What is a Safe State ? discuss its role in deadlock avoidance.
5) Describe the various mechanisms used to protect a file.
6) Explain any 4 page replacement algorithms.
7) What is an interrupt ? discuss the actions taken by the operating system when an interrupt occurs.
8) Discuss various file organizations.
part – C
(Answer any one ques.. every ques. carries 15 marks.)
C. 1) By drawing neat diagrams, compare page fault characteristics of the FIFO and LRU page replacement policies for the subsequent sequence of page references,
for a process, considering the change in the number of page faults occurring, when the number of page frames allocated to the process increases from two to three and then from three to 4.
Page reference 5, 4, 3, 2, 1, 4, 3, 5, 4, 3, 2, 1, 5
string
Reference time t1, t2 t3, t4, t5, t6, t7, t8, t9, t10, t11, t12, t13
string
2) Write a note on the Linux system, clearly explaining its overall architecture as well as describing important features of the component modules such as process management, file management, memory management and I/O management.
____________________
PDF to Word
*2626* (Pages : 2) 2626
Reg. No. : ...................................
Name : ........................................
Fourth Semester B.C.A. Degree Examination, May 2009
BCA 405 : OPERATING SYSTEMS
(2007 Scheme)
Time: three Hours Max. Marks: 75
part – A (Answer any 10 ques.. every ques. carries three marks.)
A. 1) discuss any 3 functions of an operating system.
2) What is the difference ranging from Hard and Soft real-time systems ?
3) Differentiate ranging from multiprogramming and time sharing.
4) What is the use of a Process Control Block (PCB) ?
5) What is a deadlock ? How is it various from starvation ?
6) Distinguish ranging from paging and segmentation.
7) Explain the term demand paging.
8) What are semaphores ? Why are they used ?
9) What is a disk cache ?
11) Discuss various methods of disk space allocation.
12) Distinguish ranging from preemptive and non-preemptive process scheduling.
13) What do you understand by the term "record blocking" ?
14) Explain any 3 states of a process.
P.T.O.
2626 *2626*
part – B
(Answer any five ques.. every ques. carries six marks.)
B. 1) What is a system call ? define various kinds of system calls.
2) What resources are used when a thread created ? How do they differ from those when a process is created ?
3) What is situation Switch ? elaborate the steps taken by the Operating system when a situation switch occurs ?
4) What is a Safe State ? discuss its role in deadlock avoidance.
5) Describe the various mechanisms used to protect a file.
6) Explain any 4 page replacement algorithms.
7) What is an interrupt ? discuss the actions taken by the operating system when an interrupt occurs.
8) Discuss various file organizations.
part – C
(Answer any one ques.. every ques. carries 15 marks.)
C. 1) By drawing neat diagrams, compare page fault characteristics of the FIFO and LRU page replacement policies for the subsequent sequence of page references,
for a process, considering the change in the number of page faults occurring, when the number of page frames allocated to the process increases from two to three and then from three to 4.
Page reference 5, 4, 3, 2, 1, 4, 3, 5, 4, 3, 2, 1, 5
string
Reference time t1, t2 t3, t4, t5, t6, t7, t8, t9, t10, t11, t12, t13
string
2) Write a note on the Linux system, clearly explaining its overall architecture as well as describing important features of the component modules such as process management, file management, memory management and I/O management.
____________________
PDF to Word
| Earning: Approval pending. |
