CUSAT Questions

It is compulsory to participate in Common Admission Test (CAT) of Cochin University of Science and Technology (CUSAT) for admission so I have applied for this test . Now I have to prepare for it . I have no idea about it Question paper pattern . Would you provide me last year Question paper of CUSAT CAT so I will get idea about its marking scheme ?

Please provide me the previous year sample question for the B. Tech Degree VI Semester (Supplementary) Examination September CS/IT of Cochin University of Science and Technology?

[Shaleen]

B. Tech Degree VI Semester (Supplementary) Examination September CS/IT for OPERATING SYSTEMS

PART - A
(Answer ALL questions)(8 x 5 — 40)
I.
(a)
Write a note on :
(i) Pipe
(ii) Shell.

Write the usage of process table.

What is meant by Fifty Percent Rule?

Explain the memory management using Linked Lists.

What is meant by Trojan Horse Attack?

Explain the features of RAID.

Write the conditions for Deadlock.

Write a note on Deadlock Modelling .

PART — B
(4 x 15 = 60)
II.
(a)
Write a note on :
(i) Semaphores
(ii) Monitors.
(b)
Describe the concept of Producer-Consumer problem with message passing.

OR
III.
Five Batch jobs A through E, arrive at a computer centre at almost the same time. They have estimated running times of 10, 6, 2, 4 and 8 minutes. Their priorities
are 3, 5, 2, 1 and 4 respectively, with 5 being the highest priority. For each of the following scheduling algorithms, determine the mean process turn around time.
Round robin Priority scheduling First in First Served (Run in order 10, 6, 2, 4, 8) Shortest Job First (15)N.
(a)
What is meant by fragmentation? What are the various mechanisms for avoiding the fragmentation?
(b)
Write short notes on :
(i)Swapping
(ii)Virtual Memory.

OR
(a)
If FIFO page replacement is used with four page frames and eight pages, how many page faults will occur with the reference string 7103017232, if the four frames are
initially empty? Repeat the same reference string for LRU also and find no. of page faults?

(b)
Describe the design issues for Paging Systems.

(a)
Explain various design principles for Security.

(b)
Compare the SCAN and C-SCAN algorithms for Disk Arm Scheduling.

OR
(a)
Describe various protection mechanisms.

(b)
Write a note on Interrupts.

(a)
Explain the deadlock detection algorithm for one resource of each type.

(b)
Write a note on Resource Trajectories.

OR

(a)
Describe various layers in a UNIX system.
(b)
Write a short note on UNIX file system.