The Shivaji University, BE course previous years question paper T.E. for Computer Science. & Engineering of Semester-V Examination for Operating Systems & Network Technologies is as given below:

Operating Systems Question Paper

Instruction:
Section I - Question no. 4 is compulsory.
Attempt any two from Q 1,2 and 3.
Section II - Attempt any three from Q. 1, 2, 3 and 4.

Section - I

1)
a) What are the advantages of multiprogramming? [Marks 4]
b) What are the major activities of an operating system in regard to the memory management. [Marks 8]
c) Explain the mechanism of process creation and termination. [Marks 8]

2)
a) Explain Semaphores. [Marks 8]
b) Consider 4 process with length of CPU burst time given in milliseconds. [Marks 8]

Process Burst Time Arrival Time
P180
P241
P392
P453

Draw the Gantt Chart and find the average waiting time for 1)Preemptive SJF scheduling

2) Non preemptive scheduling

3)
a) Explain the shortest job first scheduling algorithm. [Marks 8]
b) Explain any two classical problems of synchronization. [Marks 8]

4) Write short notes on following [Marks 18]
a)PCB
b)Critical regions
c)Scheduling criteria

Section - II

Solve any three questions:

1) a)Explain deadlock prevention methods. [Marks 8]
b) Explain external and Internal fragmentation. [Marks 8]

2) a)Describe the following allocation algorithms. [Marks 8]
1) First Fit 2)Best Fit 3)Worst Fit

b)List Page Replacement Policies. Explain LRU in detail. [Marks 8]

3) a) Explain Banking algorithm for resource request with an example. [Marks 9]
b) With a neat diagram describe Kernel/IO Subsystem. [Marks 9]

4. Write short notes on : [Marks 16]
a) Disk Management in MS-DOS
b) Virtual Memory Management in Windows.

Network Technologies Question Paper

Instructions:-
1) Solve any two questions from each section.
2) Figures to the right indicate full marks.

SECTION - I

1.
a) For a mobile cluster size of 7, determine the frequency reuse distance if the cell radius is 9 kilometers. [Marks 3]
b) Explain GSM network architecture with necessary diagram. [Marks 6]
c) What is CDMA? Explain how it is different from FDMA and TDMA. [Marks 4]

2.
a) What is cell sectoring? Explain the function with necessary cell diagram. [Marks 6]
b) Explain CDMA(IS-95) reference architecture. [Marks 6]

3.
a) Why are supervisory audio tones and signalling tone needed for the AMPS system? [Marks 3]
b) Explain GSM signalling model for UM interface. [Marks 4]
c) Describe the basic operation of GSM GPRS. [Marks 5]

SECTION - II

4.
a) Explain in detail difference between wired and wireless LAN. [Marks 6]
b) Describe technical challenge for Broadband satellite system. [Marks 6]

5.
a) Explain in detail SCO and ACL link. [Marks 6]
b) Explain the basic operation of the IEEE 802.16 MAC layer. [Marks 6]

6. Write short notes on :
(i) Wireless Sensor Network [Marks 5]
(ii) Cognitive Radio Technology [Marks 5]
(iii) IEEE 802.11G [Marks 3]