wipro placement paper 2008 style

Written : Mainly OS, Datastructures, C and CO .

Answers : All the answers which iam giving here may not right. These arejust what I wrote there.

1. On Deadlock : Trivial answer, Shared Data

2. CPU Utilization:

given CPU time : 20 %

paging : 97.7%

I/O : 5.33 %

Which of the following is not likely to improve CPU Utilization:

Ans: Installing a faster CPU



3. Bubble sort : Given sequence of numbers what will be order of sequencesafter two iterations.

Ans: very trivial, but you should know what bubble sortdoes



.4. Bubble sort : how many swap operations has been done in the aboveprocess?



5. What data structures you should use for dictionary searching and itshould be capable of doing spell check also ?

Ans: Hashing



6. Which is the best scheduling algo. (given five of them

)Ans.: Shortest Job First with Pre-emption



7. If a numbering system uses 0 , 1 and Z where Z stands for -1what is the value of 6.25 :Z01 = 1*1 + 0*2 + (-1)*4Ans: You can easily find out by trial and error keep in mindthat other side of dot will proceed as 1/2, 1/4 ...



8. What is the value of 121 base 4 + 84 base 16 ?

Ans : 2130



9. What Aliases stands for ...........?



10.What is the value ofABCD + AB'C'D' + AB'C'D + AB'C'D' ?( Expression may not be the exact one but something similar tothe above )



11. & 12. Given a C code. What is the OUtput ?

Ans: Trivial, just we have to go through the codecarefully.ONe of the questions is to reverse the given number.ie. given 3276 the pgm. will output 6723



13. ONe questions on CO, which is slight a lenghty one and I couldnt'recollect the same.



14. Given Three trees and ONe sequence of alphabets, we are supposeto find which operation was performed on the tress to getthat result. ie. either preorder, postorder or inorder.Ans: To that question, all preorder



15. When the fn. is called where the return add. is stored?

ans. stack



16. What is the nece. for compiler to support recursion?ans/ stackThere are five more questions which i could not recollect as ofnow and mail you later.



Questions that are asked to me in the wip.info. interview.



1. What are the funs. of transport layer? What is TCP, UDP, theirdifferences .....

2. If you undelete a file in unix or dos can you recover it?If you can how will you do it?

3. Write a pgm. to check whether given string is palindrome or not?

4. Which page replacement algo. is the best one? ie. the one whichwill give less page faults, assuming cache memory is not there.

4. Do you know unix internals?

5. What is TSR ? Explain in little detail? HOw it is handled?

6. How to fine the size of the int without using size of operator?ans. store -1 in that location so by two's complement all oneswill be stored in that location. Keep right shifting itso zeros will be appened on the left. Once the locationis filled with all zeros, the number of shifts gives youthe size of that operator.



7. About ARP and RARP.

8. HOw parameter passing in C

9. What compiler actually does

1) ONE RECTANGULAR PLATE WITH LENGTH 8INCHES,BREADTH 11 INCHES AND2 INCHES THICKNESS IS THERE.WHAT IS THE LENGTH OF THE CIRCULAR RODWITH DIAMETER 8 INCHES AND EQUAL TO VOLUME OF RECTANGULAR PLATE?



ANS: 3.5INCHES



2) WHAT IS THE NUMBER OF ZEROS AT THE END OF THE PRODUCT OF THE NUMBERSFROM 1 TO 100

3) in some game 139 members have participated every time one fellow willget bye what is the number of matches to choose the champion to beheld?ans: 138

4) one fast typist type some matter in 2hr andanother slow typist type thesame matter in 3hr. if both do combinely in how much time theywill finish.ans: 1hr 12min

5) in 8*8 chess board what is the total number of squaresrefer odelans:204

6) falling height is proportional to square of the time.one object falls 64cm in 2sec than in 6sec from how muchheight the object will fall.

7) gavaskar average in first 50 innings was 50 . after the 51stinnings his average was 51 how many runs he made in the 51stinnings

8)2 oranges,3 bananas and 4 apples cost Rs.15 . 3 ornages 2 bananas1 apple costs Rs 10. what is the cost of 3 oranges, 3 bananas and3 apples ANs Rs 15.

9)in 80 coins one coin is counterfiet what is minimum number ofweighings to find out counterfiet coin

10)in a company 30% are supervisors and 40% employees are maleif 60% of supervisors are male. what is the probabilitythat a randomly choosen employee is a male or female?

11)statement: all green are blue are blue, all blue are whiteconclusion:

I) some blue are green

II) some white are green

III)some green are not white I

V) all white are bluea) he has given four choices like gre type



12)all teachers are students. some students are girls.this type of questions are there.we cant able to reproduce them.:wq



APTITUDE TEST



1)33 1/3 of 101 + 296 is

(ans 1200) check



2)0.625= ?

(ans 27/40)



3)One ship goes along the stream direction 28 km and in oppositedirection 13 km in 5 hrs for each direction.What is the velocityof stream?(ans 1.5 kmph)



4)Cubic root of 3375=?(ans 15)



5)2020201-565656=?(ans 1454545)



6)CHAIRS PROBLEM5 chairs=9 tables,12 tables = 7 stools likethat- - -

(ans is 80Rs)



7)One clock ringes 7 O'clock in 7 sec.In how many seconds it willring 10 O'clock.(

ans 10.5 sec)



8)One watch is showing 30 past 3 .What is the angle between minutes &hours hand?

(ans 75 degrees)



9)The average of 4 consecutive even numbers is 27. What is the largestnumber?

(ans 30)



10) 25 stations ,24 stations are inbetween- - - - -how many tickets should be required.

(ans 25*24=600)PUZZLES TO PUZZLE YOU "S.DEVI"PROB 24



11)One ball was dropped from 8ft height and every time it goes halfof the height. How much distance it will travell before coming torest.

(ans 24 approximately)



12)Two trains are travelline at equilateral .Train A is travellingin the direction of earths spin.Other train B is travelling inopposite direction of earths spin.Which trains wheels will wearfirst?and why?(

ans TRAIN B .Because of less centrifugal force.)



OK HARI 3 MORE QUES ARE THERE.I HOPE YOU CAN SOLVE EASILY.NOW

I have only 3 C ques. I am sendins them in immediatemail. Any whey I will try to send remaining 7 C quesbefore 20th.



C QUESTIONS:WHAT IS THE OUT PUT FOR FOLLOWING PROGRAMMS



1)main()

{

char a[2];

*a[0]=7;

*a[1]=5;

printf("%d",&a[1]-a)

ANS:ans may be 1.(illegal initialization)



2)#includemain()
{
char a[]="hellow";
char *b="hellow";
char c[5]="hellow";
printf("%s %s %s ",a,b,c);
printf(" ",sizeof(a),sizeof(b),sizeof(c));
}
(ans is hellow,hellow,hellow6,2,5 )


3)#include
main()
float value=10.00;
printf("%g %0.2g %0.4g %f",value,value,value,value)
}(
ans is 10,10,10,10.000000)

4)#include
void function1;i
nt i-value=100;
main()
{
i-value=50;
function1;
printf("i-value in the function=",i-value);
printf("i-value after the function=",i-value);
}
printf("i-value at the end of main=",i-value);
functioni()
i-value=25;

THIS IS ROUGH IDEA OF THE PROGRAMANS ARE

1)i-value in the function=25;
2)i-value after the function=50;
3)i-value at the end of the main=100;5)
main()
{
funct(int n);
{
switch(n)
case1:m=2;
break;
case2:m=5;
break;
case3:m=7;
break;
default:m=0;
}

THIS IS ROUGH IDEA
:(ANS:Out put is m=0)

REMAINING 5 PROGRAMS SOME WHAT LARGE AND COMPLICATED.ANY WHEYI WILL SEND REMAINING PROGRAMS BEFORE 20th.WIPRO_2004 PSG PAPER

1. Delhi is coded as CCIDD;then Bombay is ----------?
2. A,B are 2 watchesA-exact time At 8am A& B correct timeB-1/2 min lost every hourWhat is the time at 8 pm in B's watch?
3. analogiesplateau:topography
4. antonym -resistiveness5
. Jumbled words LEZUPK=--------?
6. mercenary :financialPecuniary: moneyPhilosophy :mindReligion :spiritCorporal:physical
7. +,* interchanged, 8&2 interchanged. What is 8*2+6?
Ans:22

8. Choose the logically right statements.Mba's are in demand
a) R&S in demand
b)R is in demand
c) S is in demand
d)R&S are mba's
9. ans: kernel mode

10. Analytical reasoningFloors rooms
1) --------- ----------------
2) --------- ---------------
3) ---------- ---------------
4) --------- ----------------

11. antonymsspur,harbinger
12. analogiessurprise :exclamation
13.a-2yrs older than bb-5 yrs younger than cc=9d-4 yrs younger than dwhat is a's age?
14. jumbled paragraphs ,logical derivations
15. pgm_count=10;sum=0;*temp=&count;*temp=20;temp=sigma(*temp)=count;printf(sum,*temp,count);what is the output?
16.which is not true?Ans: binary should have 2 nodes16.
ans : binary search follows divide & conquer
17. main( )printf(5+"facsimile")output?
18. find the odd one outmundance,bizarre,mystical,obscure
19. routing is done by network layer.
20. sentence completionhe made just a -----------effort