(DCS/DIT311) B.Tech. DEGREE EXAMINATION, DEC. - 2013 (Examination at the end of Third Year Third Semester) Computer Science & IT Paper - I : OPERATING SYSTEMS Time : 3 Hours Maximum Marks : 75 Answer question no.1 compulsory (15 × 1 = 15) Answer ONE question for each unit (4 × 15 = 60) 1) Write short notes on : a) Batch processing systems b) Program counter c) PCB d) Pthread e) Explain starvation f) What is semaphore g) Explain nopreemption h) Explain limit register and relocation register i) Define TLB j) Describe NUMA
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(DCS/DIT311)
B.Tech. DEGREE EXAMINATION, DEC. - 2013
(Examination at the end of Third Year Third Semester)
Computer Science & IT
Paper - I : OPERATING SYSTEMS
Time : 3 Hours Maximum Marks : 75
Answer question no.1 compulsory (15 × 1 = 15)
Answer ONE question for each unit (4 × 15 = 60)
1) Write short notes on :
a) Batch processing systems
b) Program counter
c) PCB
d) Pthread
e) Explain starvation
f) What is semaphore
g) Explain nopreemption
h) Explain limit register and relocation register
i) Define TLB
j) Describe NUMA
k) What are file attributes
l) What is virtual file system
m) What is bad block
n) Define domain structure
o) Define worm
UNIT-I
2) a) Describe parallel systems and real time systems.
b) Explain operating system layered approach and micro kernel
(OR)
3) Describe IPC. Explain its two modes of IPC.
UNIT-II
4) a) Describe SJF and Priority scheduling algorithms with examples.
b) Define about Peterson's solution.
(OR)
5) Explain the dining philosopher's problem. Explain its solution using monitors
UNIT-III
6) Explain deadlock avoidance using resource allocation graph and bankers algorithm.
(OR)
7) a) Explain logical versus physical address space.
b) Explain contiguous memory allocation.
c) Describe segmentation.
UNIT-IV
8) a) Explain demand paging and steps to handle page fault.
b) Explain the storage structure of file system.
(OR)
9) a) Explain SCAN scheduling algorithm.
b) Explain about access matrix and its utilization.
c) Define the pc bus structure.
* * * *
(DCS/DIT 312)
B.Tech. DEGREE EXAMINATION, DEC 2013
(Examination at the end of Third Year Third Semester)
Computer Science and IT
(Paper - II) : SYSTEMS SOFTWARE
Time : 3 Hours Maximum Marks : 75
Answer question no.1 compulsory (5×3=15)
Answer any four questions from Part-B (4×15=60)
Part-A
1) Explain the following:
a) Symbol table
b) Indirect addressing
c) Overlay
d) Debugging
e) Dynamic Linking
Part-B
2) a) Describe the machine structure of IBM 360 / 370.
b) Describe various data formats.
(OR)
3) Explain the design of one pass macro processor handling macro calls within macro definition.
4) a) Explain the functions of a loader.
b) Explain the different types of loaders.
(OR) 5) a) Describe the data bases used in the design of a direct linking loader.
b) Explain about Text Editors.
6) Discuss about Internal representation of files.
(OR)
7) a) Explain about UNIX kernel.
b) Explain buffer cache.
8) What is a system call. Discuss about various system calls used for file systems.
(OR)
9) Explain Inter Process Communication
* * * *
(DCS / DIT 313)
B.Tech. Degree Examination, DEC. - 2013
(Examination at the end of Third Year Third Semester)
Computer Science & IT
Paper – III : OPERATIONS RESEARCH
Time: 03 Hours Maximum Marks: 75
Answer Question No. 1 compulsory. [15]
Answer ONE question from each unit [4 × 15 = 60]
1) a) What are various models in OR?
b) Initial Basic Feasible solution.
c) Dual Simplex method.
d) Infeasible solution.
e) Degeneracy in Transportation problem.
f) Explain about Inventory control.
g) Characteristics of Queuing theory.
h) Probability considerations in PERT.
i) Critical Path.
j) Two-Person Zero-sum Game.
k) Max-min and Min-max principle.
l) Saddle point.
m) Characteristics of Dynamic programming model.
n) Payoff matrix.
o) What are the various methods to obtain solution of a transportation
problem?
UNIT - I
2) a) What is degeneracy in LPP?
b) Use simplex method to solve LPP :
Max Z = 3X1 + 2X2
Subject to constraints.
X1 + 2X2 < 6, 2X1 + X2 < 6, X1, X2 > 0
OR
3) a) Explain about Dual simplex method?
b) Write about Phases of OR?
UNIT – II
4) a) Write the procedure of Hungarian method of Assignment problem?
b) Solve the following transportation problem and obtain optimum
Transportation cost :
9 12 9 6 9 10 5
7 3 7 7 5 5 6
6 5 9 11 3 11 2
6 8 11 2 2 10 9
4 4 6 2 4 2 22
OR
5) a) Explain graphical method of 2 ×n and n×2 games.
b) Solve the game whose pay off matrix is given by :
B1 B2
A1 -5 2
A2 -7 -4
UNIT – III
6) Ram industry needs 5,400 units/year of a bought-out component which will be
used in its main product. The ordering cost is Rs. 250 per order and the carrying
cost per unit per year is Rs. 30. Find the economic order quality (EOQ), the
number of orders per year and the time between successive orders.
OR
7) Explain the following.
a) Quantity discounts.
b) ABC analysis of inventory.
UNIT - IV
8) a) Explain the differences between PERT and CPM.
b) The following table gives the activities in a project.
Activity Optimistic Time Normal Time Pessimistic Time
1-2 30 44 54
1-3 8 12 16
2-3 1 2 3
2-4 2 3 5
3-4 8 10 12
4-5 14 22 25
c) Draw a PERT diagram.
d) Find the probability that the project will be completed in less than 60 days.
OR
9) a) Explain about Monte-carlo Simulation?
b) Explain about Applications of Queuing theory?
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(DCS 314)
B.TECH. DEGREE EXAMINATION, DEC - 2013
(Examination at the end of Third Year)
Computer Science & IT
Paper - IV : DESIGN AND ANALYSIS OF ALGORITHMS
Time : Three hours Maximum : 75 marks
Answer Question No. 1 compulsorily.
Answer ONE question from each unit.
1) Write short notes on :
(a) Divide and conquer
(b) Spanning tree
(c) Graph
(d) Backtracking
(e) NP hard problem
UNIT - I
2) Explain Kruskal's algorithm with example.
Or
3) Explain single source shortest path algorithm.
UNIT - II
4) Explain travelling salesman problem with example.