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Details of Paper Technical - Other - 15 January 2004 by Persistent conducted by Persistent for job interview.

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THERE ARE TWO ROUND OF WRITTEN.

IN THE 1ST ROUND it was objective which consists of 6 sections AND EACH SECTION HAS 5 QS. Duration 1hour

1ST SECTION:( DATA STRUCTURE)

1. question from binary search tree ans(250)

2.

3. hash table problem ans(5)

4. adjacent matrix to calculate shortest path ans(7)

5.

2ndSECTION (C LANGAUGE)

1 what is int(*(*ptr (int))(void)

2. recursion to find the value of GET(I don,t remaember the digit but it is 2 arguments (ans 6)

3.

4 recursion function to calculate fun(4,9)( ans e)

5 problem from strcmp

3rd SECTION(O.S)

1.

2 string reference is given calculate the page fault based on LRU (ans:3 or 6)

3cache hit ratio numerical (ans 98%)

4 ans 360 (but I am not sure)

5

4TH SECTION(DBMS)

1. query is given based on table employ(eno,name,salary..),workl(eno,.),project(pno,..)

select eno from employ where eno in(select eno from workl groupby eno where count(*)=(select count(*) from project))

2.select eno from emply where salary=salary

3.which is not required in trascation

options are (a).atomicity (b)isolation (c)normalization (d)concerrancy

4.

5

5TH SECTION(TOC)

1. one transtion state is given identify the grammer it accept

1

2. 0

0 1 1,0

option are( a) (10)* (b) string starting from 1 (c) ) string starting from 0

(d) 1*0*

2.totolagy ans(b)

3

4

5 S->1S1

S->00

S->11

S->0S0

Option are (a) 00100100 {b) 110010001(c) I don,t remember

6th SECTION (GENERAL COMPUTER)

1

2. difference between packet swiching and circuit swiching

3. what is the probiblity of the occurance of 7 beetween 0 and 999 ans(18/25)

4. ans (360)

5. ans (37000)

SECOND ROUND (OF 1HOUR) (VERY VERY TOUGH)

TWO C PROGRAMS ARE GIVEN

Q1. U have to write the function for matrix addition using link list.

It is called "sparse matrix" .The structure for the element is as follows.

Typedef struct element{

Int row;

Int column;

Int value;

Element * next;

}element,sparsematrin*;

If value contains zero then there should not be node assign for that.U have to also check boundary condition in your program.

Function is:

SparseMatrix SmAdd(SaprseMatrix m1,SparseMatrix m2)

( Revised concept of linked list and have a look at coding..)

Q2.Problem:-

One boy has to climb steps. He can climb 1 or 2 steps at a time.

Write a function that will returns number of way a boy can climb the steps.

Int WaytoSteps(int n)

(eg:- suppose number of steps is n=4 ,the function will return 5

(one-one-one-one ,one-one-two, one-two-one-,two-one-one, two-two)

second round is vey important for getting selected.

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