INFOSYS Q¡¦PAPER

11 questions

1)

XXXX

YYYY

ZZZZ

YXXXZ

What is X,Y and Z?

Ans: X=9 Y=1 Z=8

2) A person walks on a plain land at 4 km/hr and up the slope at 3 km/hr and comes

down at 6 km/hr and walks on the plain land again at 4 km/hr. if he started at 3:00

pm and comes back at 9:00 pm. What is the one way distance?

Ans:12 km

3) There is a five digit number

ƒá It has 2 prime digits(1 is not a prime number)

ƒá The third digit is the highest

ƒá The second digit is lowest

ƒá The first digit is 1 less that third digit

ƒá The fifth is half of the fourth

ƒá The sum of 4-th and 5-th digit is less that first

Ans: 71842

4) today is Friday. A lady says you have to meet me two days after the day before

the day after tomorrow

ans:Monday

5) a lady¡¦s age is between 50 and 70.each of her sons has many sons as his

brothers. the sum of the sons and grandsons in the lady¡¦s age. what is her age?

Ans: 64

6) two persons have 64 and 20 barrels of wine. the first one pays tax 5 barrels and

40 frames. the second one pays 2 barrel and got back 40 frames. What is the value of

each barrel and the tax paid on each barrel?

Ans: value=120 frames

Tax =10 frames

7) there are 20 balls of green color,20 balls of red color,20 balls of blue color,20

of balck,20 of yellow. how many u have to pick to guarantee 2pairs of same color?

Ans: 6 balls

8) sox¡¦s age , sox¡¦s sister¡¦s age and sox¡¦s father¡¦s age sums up to a century.

When sox s as old as his father, ox¡¦s sister will be twice as old as now. When sox

is as old as his father then his father is twice as old as when his sister was as

old as her father

ans: sox=20

sister=30

father=50

9) jerry and four of his friends one of whom is a broker are about to go on a trip.

They decide to take cards in order to choose the driver. The cards are ten jack,

queen, king and ass. The person who will get the ass will be the driver.

(five condition will be given)

sorry we could not make the last two questions b¡¦cause of lack of time.

Section A

1. Which of the following involves context switch,

(a) system call

(b) priviliged instruction

(c) floating poitnt exception

(d) all the above

(e) none of the above

Ans: (a)

2. In OST, terminal emulation is done in

(a) sessions layer

(b) application layer

(c) presentation layer

(d) transport layer

Ans: (b)

3. For a 25MHz processor , what is the time taken by

the

instruction

which needs 3 clock cycles,

(a)120 nano secs

(b)120 micro secs

(c)75 nano secs

(d)75 micro secs

4. For 1 MB memory, the number of address lines

required,

(a)11

(b)16

(c)22

(d) 24

Ans. (b)

5. Semaphore is used for

(a) synchronization

(b) dead-lock avoidence

(c) box

(d) none

Ans. (a)

6. Which holds true for the following statement

class c: public A, public B

a) 2 member in class A, B should not have same name

b) 2 member in class A, C should not have same name

c) both

d) none

Ans. (a)

7. Question related to java

8. OLE is used in

a) inter connection in unix

b) interconnection in WINDOWS

c) interconnection in WINDOWS NT

9. Convert a given HEX number to OCTAL

10. Macros and function are related in what aspect?

(a)recursion

(b)varying no of arguments

(c)hypochecking

(d)type declaration

11.Preproconia.. does not do which one of the

following

(a) macro

(b) conditional compliclation

(c) in type checking

(d) including load file

Ans. (c)

12. Piggy backing is a technique for

a) Flow control

b) Sequence

c) Acknowledgement

d) retransmition

Ans. (c)

13. In signed magnitude notation what is the minimum

value that

can be

represented with 8 bits

(a) -128

(b) -255

(c) -127

(d) 0

Section B

1. Given the following statement

enum day = { jan = 1 ,feb=4, april, may}

What is the value of may?

(a) 4

(b) 5

(c) 6

(d) 11

(e) None of the above

2. Find the output for the following C program

main

{int x,j,k;

j=k=6;x=2;

x=j*k;

printf("%d", x);

3. Find the output for the following C program

fn f(x)

{ if(x<=0)

return;

else f(x-1)+x;

}

4. Find the output for the following C program

i=20,k=0;

for(j=1;j<i;j=1+4*(i/j))

{k+=j<10?4:3;

}

printf("%d", k);

Ans. k=4

5. Find the output for the following C program

int i =10

main()

{int i =20,n;

for(n=0;n<=i;)

{int i=10;

i++;

}

printf("%d", i);

Ans. i=20

6. Find the output for the following C program

int x=5;

y= x&y

7.Find the output for the following C program

Y=10;

if( Y++>9 && Y++!=10 && Y++>10)

{printf("%d", Y);

else

printf("%d", Y);

}

Ans. 13

8. Find the output for the following C program

f=(x>y)?x:y

a) f points to max of x and y

b) f points to min of x and y

c)error

Ans. (a)

9. What is the sizeof(long int)

(a) 4 bytes

(b) 2 bytes

(c) compiler dependent

(d) 8 bytes

10. Which of the function operator cannot be over

loaded

(a) <=

(b) ?:

(c) ==

(d) *

11. Find the output for the following C program

main()

{intx=2,y=6,z=6;

x=y==z;

printf(%d",x)

}

Section C (Programming Skills)

Answer the questions based on the following program

STRUCT DOUBLELIST

{ DOUBLE CLINKED

INT DET; LIST VOID

STRUCT PREVIOUS; (BE GIVEN AND A PROCEDURE TO DELETE)

STRUCT NEW; (AN ELEMENT WILL BE GIVEN)

}

DELETE(STRUCT NODE)

{NODE-PREV-NEXT NODE-NEXT;

NODE-NEXT-PREV NODE-PREV;

IF(NODE==HEAD)

NODE

}

Q. In what case the prev was

(a) All cases

(b) It does not work for the last element

(c) It does not for the first element

(d) None of these

Answer the questions based on the following program

VOID FUNCTION(INT KK)

{KK+=20;

}

VOID FUNCTION (INT K)

INT MM,N=&M

KN = K

KN+-=10;

}

Q. What is the output of the following program

main()

{ int var=25,varp;

varp=&var;

varp p = 10;

fnc(varp)

printf("%d%d,var,varp);

}

(a) 20,55

(b) 35,35

(c) 25,25

(d)55,55

Section D

1. a=2, b=3, c=6

Find the value of c/(a+b)-(a+b)/c

2. What does the hexanumber E78 in radix 7.

(a) 12455

(b) 14153

(c) 14256

(d) 13541

(e) 131112

Ans. (d)

3. 10 : 4 seconds :: ? : 6 minutes

Ans. 900

4. Q is not equal to zero and k = (Q x n - s)/2.What

is n?

(a) (2 x k + s)/Q

(b) (2 x s x k)/Q

(c) (2 x k - s)/Q

(d) (2 x k + s x Q)/Q

(e) (k + s)/Q

Questions 6 - 10 are to be answered on the following

data

A causes B or C, but not both

F occurs only if B occurs

D occurs if B or C occurs

E occurs only if C occurs

J occurs only if E or F occurs

D causes G,H or both

H occurs if E occurs

G occurs if F occurs

6. If A occurs which of the following must occurs

I. F and G

II. E and H

III. D

(a) I only

(b) II only

(c) III only

(d) I,II, & III

(e) I & II (or) II & III but not both

Ans. (e)

7. If B occurs which must occur

(a) D

(b) D and G

(c) G and H

(d) F and G

(e) J

Ans. (a)

8. If J occurs which must have occured

(a) E

(b) either B or C

(c) both E & F

(d) B

(e) both B & C

Ans. (b)

9. Which may occurs as a result of cause not mentioned

I. D

II. A

III. F

(a) I only

(b) II only

(c) I & II

(d) II & III

(e) I,II & III

Ans. (c)

10. E occurs which one cannot occurs

(a) A

(b) F

(c) D

(d) C

(e) J