Computer Science and Information Science 3rd semester (2012-December) Question Papers

USN 1OMAT4l

Fourth Semester B.E. Degree Examination, December 2012
Engineering Mathematics - l/
Time: 3 hrs.
Note: Answer FIYE full questions, selecting
at least TWO questions from each part.
o
o
(f PART _ A /st
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g
la. Using the Taylor's series method, solve the initial value probf.-
dx
0)
the point x: 0.1 (06 Marks)
Ol : I
()
! b. Employ the fourth order Runge-Kutta method to solve '"'r,
=", +x' y(0) atthe points
(jX Y"
bo-
x: O.2and x : O.4.Take h :0.2. (07 Marks)
dy i_ :
a = xv + v-, y(0) :
d9
7n c. Given 1, y(0.1) :1.1169,y(0.2): 1.2773, y(0.3) 1.5049. Find y(0.4)
ool
troo dx
.= c.l using the Milne's predictor-corrector method. Apply the corrector formula twice. (07 Marks)
gil
oE
FO 2a. Employing the Picard's method, obtain the second order approximate solution of the
following problem at x : 0.2.
-P

dv
Z=x*yz, dz
11-y+zx) y(0):1, z(0):-1. (06 Marks)
AP dx dx
oc) b. Using the Runge-Kutta method, find the solution at x : 0.1 of the differential equation
GO
50i
d'v , dv
+- x'-' -2xy =1 underthe conditions y(0): 1, y'(0):0. Take step lengthh:0.1.
dx' dx
.G (07 Marks)
Using the Milne's method, obtain an approximate solution at the point x : 0.4 of the
problem q*:*9 y(0) : 1, y'(0) : 0.1. GiVen that y(0.1) : 1.03995,
LO

o-A ' dx' dx -6y=0,
y(0.2): 1.138036, y(0.3) : 1.29865, y'(0.1) : 0.6955, y'(0.2): 1.258, y'(0.3) : ,.tli*".u,
9.Y
otE
LO 3a. If (z) : u * iv is an anatyric tunction, then prove *" (* I r(r) l) -r | r(r) l) = ['1,;l' .

>.: [*
bo-
cao (06 Marks)
6=
oB b. Findananalyicfunctionwhoseimaginarypartis v=€*{(*'-y')cosy-2xysiny}.
tr> (07 Marks)
=o
o
t<
c. If (z) : u(r, 0) + iv(r, 0) is an analytic function, show that u and v satisfy the equation
a2rAta2
: c.i o(D-r to(D I oo
------..1-f ll (07 Marks)
=
o
o or -----l- -------.1-
tor r oo
Z
4a. Find the bilinear transformation that maps the points 1, i, -1 onto the points i, 0, -i
o
respectively. (06 Marks)
b. W: e'.
Discuss the transformation (07 Marks)

Evaluate lstn 'TZ' ]
cosgiz where c is the circle
c. , lzl:3. (07 Marks)
! tr-t')(z-2)

1OMAT4l

PART _ B
5 a. Express the polynomial 2x3 -x' -3x+2 in terms of Legendre polynomials. (06 Marks)

b. Obtain the series solution ofBessel's differential equation r' (x' -r')y = 0 in
#*.t+
the form y: AJ,(x) + BJ-,(x). (07 Marks)

c. Derive Rodrique's formula P,(x) = j- *fx'' -1)'. (07 Marks)
' 2nnl dxn

6 a. State the axioms of probability. For any two events A and B, prove that
P(A u B) = P(A) + P(B) - P(A n B) . (06 Marks)
b. A bag contains 10 white balls and 3 red balls while another bag contains 3 white balls and
5 red balls. Two balls are drawn at ransom from the fust bag and put in the second bag and
then a ball is drawn at random from the second bag. What is the probability that it is a white
ball? (07 Marks)
c' In a bolt factory there are four machines ,A, B, C, D manufacturing respectlely 20o/o, 5oh,
25% 40% of the total production. Out of these 50 , 4yo, 3Yo and 2%o respectively are
defective. A bolt is drawn at random from the production and is found to be defective. Find
the probability that it was manufactured by A or D. (07 Marks)

7 a. The probabilit distributilon oI a finite random variable X is given by the following table:
.
f nnlte ra
a
Xi -1 0 1 2 J
p(xi) 0.1 k 0.2 2k 0.3 k
Determine the value of k and find the mean, variance and standard deviation. (06 Marks)
b. The probability that a pen manufactured by a company will be defective is 0.1. If i2 such
pens are selected, furd the probability that (i) exactly 2 will be defective, (ii) at least 2 will
be defective, (iii) none will be defective. (07 Marks)
c. In a normal distribution,3loh of the items are under 45 and 8o/o are over 64. Find the mean
and standard deviation, given that A(0.5):0.19 and A(1 .4):0.42, where A(z) is the area
under the standard normal curve from 0 to z>0. (07 Marks)

8 a. A biased coin is tossed 500 times and head turns up 120 times. Find the 95Yo confrdence
limits for the proportion of heads turning up in infinitely many tosses. (Given that z": 1.96)
(06 Marks)
b. A certain stimulus administered to each of 12 patients resulted in the following change in
blood pressure:
5, 2, 8, -1, 3, 0, 6, -2, l, 5, 0, 4 (in appropriate unit)
Can it be concluded that, on the whole, the stimulus will change the blood pressure. Use
to os(1 l):2.201. (07 Marks)
c. A die is thrown 60 times and the frequency distribution for the number appearing on the face
x is given the followine table:
a
x I 2 -) 4 5 6
Frequencv 15 6 4 7 11 t7
Test the hypothesis that the die is unbiased.
(Given that yf,o,(5) = 11.07 and X3o,(5) = 15.09) (07 Marks)

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USN 10cs42

Fourth Semester B.E. Degree Examination, Decemb er 2Ol2
Graph Theory and Gombinatorics
Time: 3 hrs. Max. Marks:100
Note: Answer any FIVEfull questions selecting ut least two questionsfrom each part.

(J PART _ A
o
o
I a. Define connected graph. Prove that a connected graph with n vertices has at least (n - 1)
g edges. (06 Marks)
b. Define isomorphism of two graphs. Determine whether the two graphs (Fig.Q.1(b)(i)) and
(Fig. Q. 1 (b)(ii)) are isomorphic.
C)

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a)X

d9

;,
troo Fie.Q.1(bxi)
.=N
cn <f,
c. Define a complete graph. In the complete graph with n vertices, where n
:1 0l)
Y() ) 3, showthat ur.
('-t)
.)tr
-.ca)
there edge disjoint Hamilton cycles. (07 Marks)
2

2 a. Design a regular graph with an example. Show that the Peterson graph is a non planar graph.
a= (07 Marks)
oO b. Prove that a graph is 2-chromatic if and only if it is a null bipartite graph. (06 Marks)
(d0 c. Define Hamiltonian and Eulerian graphs. Prove the complete graph K3,3 is Hamiltonian but
o0e
(nd not Eulerian. (07 Marks)
,6

E6 Define a tree. Prove that a connected graph is a tree if it is minimally connected. (06 Marks)
rao Define a spanning tree. Find all the spanning trees of the graph given below. (Fig.Q.3(b)).
oi=
(07 Marks)
:9
"c Fig.Q.3(b)
;o
6=
A,i,
c. Construct a optimal prefix code for the symbols a, o, g, u, y, zthat occur with frequencies
!o
5.v 20,28, 4, 17, 12,7 respectively. (07 Marks)
>' (ts
i50
o=
go
4a. Define matching edge connectivity and vertex connectivity. Give one example for each.
tr>
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o b. Using Prim's algorithm, find a minimal spanning tree for the weighted graph rn"ffiTlT]
U< following Fig.Q.a@). (07 Marks)
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o
'7

Vs

Fig.Q.a(b)

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c. Three boys b1, bz, b: and four girls Et, Ez, Et, gt are such that
br is a cousin of gt, Ez and g+
bz is a cousin of gz and g+
b3 is a cousin of gz and g:.
If a boy must marry a cousin girl, find possible sets of such couples. (07 Marks)

PART - B
5A. Find the number of ways of giving 10 identical gift boxes to six pelsons A, B, C, D, E, F in
such a way that the total number of boxes given to A and B together does not exceed 4.
(06 Marks)

b. Define Catalan numbers. In how many ways can one travel in the xy plane from (0, 0) to
(3, 3) using the moves R: (x + 1, y) and U: (x, y + 1) if the path taken may touch but never
rise above the line y: x? Draw two such paths in the xy plane. (07 Marks)
c. Determine the coefficient of
i) xyz' inthe expansion of (2x - Y - z4
ii) a'bl.'dt in the expansion of (a + 2b - 3c + 2d + 5)'o. (07 Marks)

6a. How many integers between 1 and 300 (inclusive) are
i) divisible by 5, 6, 8?
ii) divisible by none of 5, 6, 8? (07 Marks)
b. In how many ways can the integer s 1,2,3 . . ... 10 be arranged in a line so that no even integer
is in it natural place? (06 Marks)
c. Find the rook polynomial for the followin ig.Q.6(c)). (07 Marks)

Fig.Q.6(c)

7a. Find the coefficient of xr8 in the following products:
i) (x*x2 +x3 +*o+*t) 1x2 +x3 +xa**',+....)t
iil (x * x3 + x5 + *' + *') 1x3 + 2xa + 3xs +.....;1. (07 Marks)
b. using the generating function find the number of i) non negative and positive integer
solutions of the equation x1 * x2 a x: + x4: 25. (06 Marks)
c. Find all the partitions of x7. (07 Marks)

8a. Solve the Fibonacci relation
Fn+z : Fn+r fFn for n 2 0 given Fo
: 0, Ft : 1. (07 Marks)
b. Solve the recurrence relation
An-2 dn- I * an . 2: 5n. (07 Marks)
c. Find a generating function for the recumence relation
iL * 5o.-r + 6ar-z:3r2,r) 2. (06 Marks)

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USN 10cs43

Fourth Semester B.E. Degree Examination, Decemb er 2012
Design and Analysis of Algorithm
Note: Answer FIVE full questions, selecting atleast TWO questions from each part.
PART _ A
1a. Define asymptotic notations. (03 Marks)
d
o
b. Algorithm X(int N)
() {
a. intP;
E fori<-ltoN
{
o printf ("n % d t * tYo d: Yod", N, i, P);
I P:P+N;
3e lt
JI
i) What does this algorithm compute?
6v ii) What is the basic operation?
-.o
ool
trca
iii) How many times the basic operation is executed?
.= .-.1
(d+
iv) What is the efficiency class of this algorithm? Marks)
9il
c. Solve the following recurence relations.
otr n>0
-o
EP
t(n). = {[f(n-l)+n
o> 0
|. n=0
EE
x(n): 3x(n - 1) for n > 1, x(1):4
x(n): x(n l2)+n :
for n > 1, x(l) I n:2k. (08 Marks)
oO d. Sortthe list E XAM P L E bybubble sort, Isthere anypossibilitythat bubble sort canbe
stopped earlier? (05 Marks)
ooc
a. Discuss how quick sort works to sort an affay. Trace quick sort algorithm for the following
a6 data set 65,70,75,80,85,60, 55,50,45. Also derive the worst case complexity of quick
!d
sort. (09 Marks)
o; b. Write the recursive algorithm for merge sort. (04 Marks)

o- 5.
c. Consider the following set of 14 elements in anaffay list, -15, -6,0,7,9,23,54,82, 101,
o(e 112,I25, 13L,I42,151 when binary search is applied on these elements, find the elements
(.)
;6..
@=
which required maximum number of comparisons. Also determine average number of key
ao comparisons for successful search and unsuccessful search. (04 Marks)
6tE
!o
d. Derive the time complexity for defective chess board. (03 Marks
=-E
o.r
>'H 3 a. Solve the following instance of knapsack problem, algorithm
c50 Item 1 2 -) 4
o= Weight 4 7 J
AE
F>
5

VL
Profit 40 42 25 l2
o
U< Knapsack weight M: 10. (05 Marks)

-6t
o
o
z
L
o
o.

How Knapsack and Prim's algorithms guarantee the elimination of cycles? (07 Marks)
c. In the above graph Fig. Q3(C), determine the shortest distances from source vertex 5 to all
the remaining vertices, using Dijikstra's algorithm. (08 Marks)

10cs42

c. Three boys b1, b2, b3 and four girls Er, Ez, gz, Eq are such that
br is a cousin of gr, gz and ga
bz is a cousin of gz and g+
b: is a cousin of gz and gl.
If a boy must marry a cousin girl, find possible sets of such couples. (07 Marks)

PART _ B
5a. Find the number of ways of giving 10 identical gift boxes to six persons A, B, C, D, E, F in
such a way that the total number of boxes given to A and B together does not exceed 4.
(06 Marks)
b. Define Catalan numbers. In how many ways can one travel in the xy plane from (0, 0) to
(3, 3) using the moves R: (x + 1, y) and U: (x, y + 1) if the path taken may touch but never
rise above the line y: x? Draw two such paths in the xy plane. (07 Marks)
c. Determine the coefficient of
i) xyzz inthe expansion of (2x - y - z)4
ii) ib3"'dt in the expansion of (a + 2b'- 3c + 2d + 5116. (07 Marks)

6a. How many integers between 1 and 300 (inclusive) are
D divisible by 5, 6, 8?
ii) divisible by none of 5, 6, 8? (07 Marks)
b. In how many ways canthe integers 1,2,3.....10 be arranged in a line so that no even integer
is in it natural place? (06 Marks)
c. Find the rook polynomial for the followin Fig.Q.6(c)). (07 Marks)

Fig.Q.6(c)

7a. Find the coefficient of xr8 in the following products:
i) (x+ x2 +x3 +xo + xs;1x2 + x3 + xa +rt +....)'
ii) (x + x3 + x5 + x7 + xe; 7x3 + 2x4 + 3x5 +.....13. (07 Marks)
b. Using the generating function find the number of i) non negative and ii) positive integer
solutions of the equation X1 -f x2 1 x: + x4: 25. (06 Marks)
c. Find all the partitions of x7. (07 Marks)

8a. Solve the Fibonacci relation
Fn+2 : Fn+r tFn for n > 0 given Fo : 0, Fr : 1. (07 Marks)
b. Solve the recurrence relation
dn-2 Zn-t-l &n' Z: 5n. (07 Marks)
c. Find a generating function for the recurrence relation
a, * 5ar-t 'l 6ar-z: 3r2, r ) 2. (06 Marks)

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USN l0cs43

Fourth Semester B.E. Degree Examination, December 2012
Design and Analysis of Algorithm
Note: Answer FIVE full questions, selecting utleast TWO questions from each part.
PART _ A
la. Define asymptotic notations. (03 Marks)
ci
o
b. Algorithm X(int N)
o {
intP;
a fori<-ltoN
{
()
printf ("n % d t x t % d : o/od", N, i, P);
=
o! P:P+N;
C,X ll

iffi.
tt
J' D What does this algorithm compute?
=h
ii) What is the basic operation?
-*l
troo
iii) How many times the basic operation is executed?
.= .-.1
(B+
iv) What is the efficiency class of this algorithm? Marks)
c. Solve the following recwrence relations.
Yo
osl
aO
-! f(n) = {
[r(r-l)+n n>o
|. 0 n=0
x(n):3x(n - 1) for n > l, x(l):4
o= x(n) :
x(n | 2)+n for n > l, x(1) : I n:2k. (08 Marks)
o() d. Sort the list E X A M P L E by bubble sort, Is there anypossibilitythat bubble sort canbe
stopped earlier? (05 Marks)
o0i
(g(s
-o
a. Discuss how quick soft works to sort an affay. Trace quick sort algorithm for the following
-6 data set 65, 70, 75, 80, 85, 60, 55, 50, 45. Also derive the worst case complexity of quick
sort. (09 Marks)
]?o
oi= b. Write the recursive algorithm for merge sort. (04 Marks)
:e c. Consider the following set of 14 elements in anarray list, -15, -6,0,7,9,23,54,82, l0l,
o." 712,125,131, 142,151 when binary search is applied on these elements, find the elements
oj
which required maximum number of comparisons. Also determine average number of key
o=
}U comparisons for successful search and unsuccessful search. (04 Marks)
6tE
!o
d. Derive the time complexity for defective chess board. (03 Marks
JE
>. (! 3 a- Solve the following instance o sack problem, us algorithm
boo Item 4
tr50 2 J
o= Weight 4 7 5 J
o. ii
F>
:o Profit 40 42 25 t2
5L
^-
lr<
Knapsack weight M: 10. (05 Marks)
c.l
-
O
o
z

How Knapsack and Prim's algorithms guarantee the elimination of cycles? (07 Marks)
In the above graph Fig. Q3(C), determine the shortest distances from source vertex 5 to all
the remaining vertices, using Dijikstra's algorithm. (08 Marks)

10cs43
4a. Solve the following tra veling sales person problem, using dynamic programming

[: TTill
lo 13 o r2t
(10 Marks)

L* 8 e ol starting city 1

(03 Marks)
b. Write Warshall- Floyd algorithm.
(07 Marks)
c. Generate the transitive closure of the graph given below.

o-#->o
rl
IJ
o<-e
I

Fig. Qa(c) Fig. Qs(c)

PART _ B

a. Match the pattern BAOBAB in the text BESS - KNEW - ABOUT - BAOBAS, using
i) Horspool's algorithm
ii) Boyer Moore algorithm. (08 Marks)

b. Write a BFS algorithm to check the connectivity of a given graph. (05 Marks)

c. Apply source elimination based algorithm to represent vertices in topological ordering for
(04 Marks)
the digraph given in Fig. Q5(c).
d. eppty aiitribution counting algorithm to sort the elements b, c, ,d c, b, a, a,b' (03 Marks)

6 a. What are decision trees? Explain with example, how decision trees are used in sorting
algorithms. (lo Marks)
b. Explain the concepts of P, NP, and NP - complete problems. (10 Marks)

Draw the state - space tree to generate solutions to 4 - Queen's problem. (04 Marks)

Apply backtracking method to solve subset sum problem for the instance n: 6, d : 30.
j
s {5, 10,12,13, 15, 18} (06 Marks)

c. What is branch - and - bound algorithm? How it is different from backtracking? (05 Marks)
d. Write the steps and apply nearest neighbour approximation algorithm on the TSP problem
with the starting vertex a, and calculate the accuracy ratio of approximation' (05 Marks)

Fig.7(d)

8 a. What are the different computation models? Discuss in detail. (10 Marks)

b. Let the input to the prefix computation problem be 5, 12,8,6,3,9,11, 12, 5, 6,7, 10, 4,3, 5
and let CI stand for addition. Solve the problem using work optimal algorithm. (10 Marks)

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USN 10cs44

Fourth semester B.E. Degree Examination, Decemb er 2ol2
UNIX and Shell Programming
Note: Answer FIVE full questions, selecting
o
o at least Tl,yO questionsfrom each part.
o
I

PART _ A
1 a. Explain salient features of TINIX operating system. (07 Marks)
o b. Compare internal and external commands in TINIX with suitable example. Explain why cd
() command cannot be an external command. (06 Marks)
Bq c. Illustrate with a diagram typical LINIX file system and explain different types of tiles
supported in IINIX. (07 Marks)

3
oo ll 2 a. Explain the basic file attributes displayed by ls - I command. (06 Marks)
troo
.=N
(B+
b' Discuss relative and absolute methods for changing file permissions. (06 Marks)
tuo c' Explain with a diagram the different modes of Vi editor and list the commands in each
Y(J
g
(.) mode. (08 Marks)
-O
EE

?,a 3a. Explain with an example use of single quote, double quote and back quote in a command
line. (06 Marks)
a:
b. Explain the following commands:
o()
-! i) cp?????progs ii) kill-s KILL 121 t22
aoc
d03
iii) wc -l < user.txt iv)ps-e I (06 Marks)
c. Explain the mechanism of process creation using system calls in UNIX. (04 Marks)
,6
d. Explain the following environment variables:
-?o
'Ca D PATH ii) HISTSIZE iii) PS2 iv) SHELL (04 Marks)
OE

o-A 4a. Discuss with example hard link and soft link applicable to UNIX files. (06 Marks)
o(v b. Explain the following commands:
a=
i) umask 022
4tE ii) find/ ! -name "*.C"-Print
!o iii) tr -d':l' < emp.txt
=E
Y,
-^o
iv) touch - m 0303 10 30 r,tu.txt (08 Marks)
coo c. Explain the following filters with options:
o=
so
E>
i) Paginate - Pr
^q
I
ii) Sort - Sort (06 Marks)
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*C..l PART _ B
O
o
5a. Explain with example basic regular expressions. (06 Marks)
Z b. Locate lines longer than 100 and smaller than 150 characters using (i) grep, (ii) sed.
(04 Marks)
o c. Discuss stream editor - sed with options. (06 Marks)
o.
d. How do these expressions differ:
i) [0-e]*and [0-9] [0-9]*
ii) ^[^ ^]and^^^ (04 Marks)

l0cs43
4 a. Solve the following traveling sales person problem, using dynamic programming
[o 10 15 2of
lr o e 1oI (10 Marks)
lu 13 o 0l
tt
L8 8 9 o -l starring city I
b. Write Warshall- Floyd algorithm. (03 Marks)
c. Generate the transitive closure of the graph given below. (07 Marks)

rrl-O
IJ
O----*->O

O+O Fig. Qa(c)
TYT
d.;o
Fig. Qs(c)

PART _ B

a. Matchthe pattern BAOBAB in the text BESS - KNEW - ABOUT - BAOBAS, using
i) Horspool'salgorithm
ii) Boyer Moore algorithm. (08 Marks)
b. Write a BFS algorithm to check the connectivity of a given graph. (05 Marks)
c. Apply source elimination based algorithm to represent vertices in topological ordering for
the digraph given in Fig. Q5(c). (04 Marks)
d. Apply distribution counting algorithm to sort the elements b, c, ,d c, b, a, a,b. (03 Marks)

6 a. What are decision trees? Explain with example, how decision trees are used in sorting
algorithms. (10 Marks)
b. Explain the concepts of P, NP, and NP - complete problems. (10 Marks)

7 a. Draw the state - space tree to generate solutions to 4 - Queen's problem. (04 Marks)
b. Apply backtracking method to solve subset sum problem for tho instance n : 6, d : 30.
:
S {5, 10,12,13, 15, 18} (06 Marks)
c. What is branch - and - bound algorithm? How it is different from backtracking? (05 Marks)
d. Write the steps and apply nearest neighbour approximation algorithm on the TSP problem
with the starting vertex a, and calculate the accuracy ratio of approximation. (05 Marks)

Fig. 7(d)

8 What are the different computation models? Discuss in detail. (10 Marks)
Let the input to the prefix computation problem be 5, 12,8, 6,3,9, ll, 12, 5, 6,7, 10, 4,3, 5
and let @ stand for addition. Solve the problem using work optimal algorithm. (10 Marks)

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a

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USN l0cs44

Fourth Semester B.E. Degree Examination, December 2Ol2
UNIX and Shell Programming
Note: Answer FIVEfull questions, selecting
(J
(.) at least TWO questionsfrom each part.
o

PART _ A
Explain salient features of UNIX operating system. (07 Marks)
() Compare internal and extemal commands in UNIX with suitable example. Explain why cd
command cannot be an external command.
E
C) (06 Marks)
!
oX c. Illustrate with a diagram typical TINIX file system and explain different types of files
supported in LINIX. (07 Marks)

:n
-oo ll 2a. Explain the basic file attributes displayed by ls - I command. (06 Marks)
troo
.= rl
b. Discuss relative and absolute methods for changing file permissions. (06 Marks)
cdt
c. Explain with a diagram the different modes of Vi editor and list the commands in each
9il
oE mode. (08 Marks)
aO

o>
3a. Explain with an example use of single quote, double quote and back quote in a command
line. (06 Marks)
#:! b. Explain the following commands:
oO
do i) cp ????? pross ii) kill-s KrLL 121 122
ooi iii) wc -l < user.txt iv)ps-e I (06 Marks)
c. Explain the mechanism of process creation using system calls in UNIX. (04 Marks)
-6
d. Explain the following environment variables:
E(n
,o i)PATH i0 HTSTSTZE iii) PS2 iv) SHELL (04 Marks)
OE

o6- 4a. Discuss with example hard link and soft link applicable to UNIX files. (06 Marks)
o."
oj b. Explain the following commands:
a=
i) umask 022
<o
i, tE ii) find/ ! -name "*.C"-Print
!o iii) -d':l' < emp.txt
tr
>'! iv) touch - m 0303 10 30 r,tu.txt (08 Marks)
co0 c. Explain the following filters with options: -rssT{q&L
o=
o- :j i) Paginate - Pr To*oo*
tr>
VL
9-
ii) Sort - Sort (06 Marks)

lr<
+ C.l PART _ B
0) 5a. Explain with example basic regular expressions. (06 Marks)
Z b. Locate lines longer than 100 and smaller than 150 characters using (i) grep, (ii) sed.
(04 Marks)
o c. Discuss stream editor - sed with options. (06 Marks)
d. How do these expressions differ:
i) [0-9]*and [0-9] [0-9]*
ii) ^[^ ^]and^^^ (04 Marks)

10cs44

a. What is shell programming? Write a shell program to create a menu and execute a given
option based on users choice. Options include (i) list of users, (ii) list of processes,
(iii) list of files. (06 Marks)
b. Explain with example set and shift commands in UNIX to manipulate positional parameters.
(04 Marks)
c. Discuss use of trap statement for interrupting a program in UNIX. (04 Marks)
d. Explain with an example while and for loop in shell programming. (06 Marks)

7 a. Write a note on awk and explain built in variables in awk. (08 Marks)
b. Explain with example the following awk function:
o
i) split ii) Substr o o
iii) length iv) index o (08 Marks)
c. i) Write an awk statement to print odd numbered lines in a file.
ii) Write an awk statement to delete blank lines from a file. (04 Marks)

a. Explain string handling function in perl. (06 Marks)
b. Using command line arguments, write a perl program to find whether a given year is a leap
year. (07 Marks)
c. Write a perl program to convert a given decimal number to binary equivalent. (07 Marks)

,f****

a

/

USN 10cs4s

Microprocessors

0.)
Note: Answer FIYEfull questions, selecting
o
C)
at least TWO questionsfrom eoch part.
!
a

PART _ A
(.)
2
(.)
I a. What is microprocessor? Explain how data, address and control buses interconnect various
()X
system components. (06 Marks)
b. Explain the program model visible register organization of 8086 pp. (07 Marks)
c. What is conventional memory? Explain segments and offsets. List default segment and
f^r
=h

offset register pairs. (07 Marks)
troo
.=N

gd 2a. Explain the descriptors of 80286 and 80386 microprocessors. Also explain prog invisible
ogl registers within 80286 pp.
-o (08 Marks)
b. Explain with examples the following addressing modes:
*,a
i) Scaled - indexed addressing mode
a=
ii) RIP relative addressing mode
o() iit) Relative prog memory addressing mode. (06 Marks)
c6O c. What is stack? What is the use of stack memory? Explain the execution of push and pop
botr instructions. (06 Marks)

-€ 3 a. Write bubble sort program using 8086 assembly instructing.
-od
'Ca b. Explain the following instructions with an example for each:
or= i) LEA &flit{Tfr'lc-
?o
so- ii) xcHG LB&i#"irii'd
o _:' iii) XLAT
o= ir) DIV
AE v) AAA.
LO c. What do you mean by segment override prefix? Explain the following assembler directives:
v,
^:
bo-
i) ASSUME
tro0
o=
ii) SMALL
90 iii) PRoc
5:
=o iv) EQU
rJ< v) LOCAL. (07 Marks)

-N
o
o
4 a. With format explain rotate instructions. Give examples to rotate right by 1-bit and rotate left
by 5-bits. (06 Marks)
b. Discuss with examples unconditional and conditional branching instructions. (04 Nlarks)
o
a c. What is a procedure? Explain the sequence of operation that takes place when a procedure is
called and returned. (04 Marks)
d. Explain m/c control instructions with examples. (06 Marks)

1 of2

10cs4s

PART _ B

5a. Distinguish between the 16-bit and 32-bit versions of C/C ** when using the inline
assembler. (06 Marks)
b. Write a mixed language program that converts binary to ASCII. (07 Marks)
c. Write a mixed language module to realize macro to read a character from keyboard.
(07 Marks)

6a. Explain the functions of following pins of 8086 microprocessor.
i) RESET
ii) READY
iii) ALE
iv) LOCK. (04 Marks)
b. With diagram, explain RESET section of 8284 clock generator. Also indicate how clk and
RESET are connected to 8088 pp. (06 Marks)
c. Using timing diagram, explain the I/O write bus cycle in 8086 micro processor. (06 Marks)
d. Bring out the differences between 8086 and 8088 microprocessors. (04 Marks)

a. Explain how 74LS138 decodes 2732EPROMS for 32Kx 8 section of memory. Assume the
starting address is 40000H. Give the detailed memory map. (06 Marks)
b. What is flash memory? Explain how a flash memory is interfaced to 8086 pp. (06 Marks)
c. Explain 74138 decoder configurations to enable ports at address E 8 H to EFH. (08 Marks)

8a. Write an 8086 ALP to read a byte of data from port A and port B. Add the data and save the
result in a memory location. (05 Marks)
b. Explain command word format of 82C55 in mode-0. Write the control word format to
initialize to set PC3 and reset PC7. (07 Marks)
c. With internal block diagram, explain 8254 PIT. Give any two applications of the 8254.
(08 Marks)

{<***{<

2 of2

/

USN 10cs46

Gomputer Organization
Note: Answer FIVEfull questions, selecting
atleast TWO questions from each part.
(J
o
o PART _ A

a. Explain the different functional units of a digital computer. (05 Marks)
b. Draw and explain the connection between memory and processor with the respective
(.)

(.)
registers. (05 Marks)

3q c. Explain clearly SPEC rating and its significance. Assuming that the reference computer is
ultra SPARCIO work station with 300 MHz ultra SPARC processor. A company has to
purchase 1000 new computers hence ordered testing of new computer with SPEC 2000.
:n Following observation were made.
bJl
troo
.= a.t
I

Runtime on reference co Runtime in new computer.;
Ioi
96' 50 minutes 5 Minutes
ogl
eO 75 Minutes 4 Minutes

E*
a:

o(.)
(d0
60 Minutes
30 Minutes
6 Minutes
3 Minutes

The company system manger will place the order for purchasing new computers only if
M/
overall SPEC rating is atleast 12. After the said test will the system manger place order for
ooi (10 Marks)
(B(3 purchase of new computer.
-o:
a6

<s 2a. What is little endian and big endian memory? Represent the number 64243848H in 32 bits
-? d)
'Ca big endian and little endian memory. (06 Marks)
or=
b. What is addressing mode? Explain immediate, direct and indiiect addressing mode by an
o-A example. (06 Marks)
c. Explain logical shift and rotate instructions, with examples. (08 Marks)
r.9
a=
t- ri,
Ntr
3a. Define memory mapped I/O and IO mapped I/O, with examples. (05 Marks)
!o b. Explain how interrupt requests flom several lO devices can be communicated to a processor
5.v
>'h
bo- through a single INTR line. (10 Marks)
coo c. What are the different methods of DMA? Explain them in brief. (05 Marks)
0)=
o;i
:o
o- 4a. With a block diagram, explain how the keyboard is connected to processor. (06 Marks)
J< b. Explain the serial port and serial interface. (06 Marks)
-..l c. Explain architecture and protocols, with respect to USB. (08 Marks)
o
z PART _ B
o
5a. Draw a diagram and explain the working of 16 Mega bits DRAM chip configured as
2M x 8. Also explain as at how it can be made to work in fast page mode. (10 Marks)
b. Briefly explain any four non-voltile memory concepts. (05 Marks)
c. With figure analyse the memory hierarchy interms of speed cost and size. (05 Marks)

-l

10cs46

6a. Explain the design of a four bits carry - look ahead adder circuit. (10 Marks)
b. Gives Booth's algorithm to multiply two binary numbers. Explain the working of algorithm
by taking an example. (10 Marks)

7 a. Write and explain the control sequence for execution of an unconditional branch instruction.
(10 Marks)
b. Draw and explain multiple bus organization. Explain its advantages. (10 Marks)

8 a. Write short note on power wall (06 Marks)
b. What you mean by shared memory multiprocessors. (06 Marks)
c. Explain the different approaches used in multithreading. (08 Marks)

{<**{<*

Computer Science and Information Science 3rd semester (2012-December) Question Papers

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