TCS Technical Placement Paper:
1. An index is automatically generated with the following constraints.
a. Check
b. Not null
c. Primary key
d. Foreign key
2. Select mod(16,3) from emp;
a. 1
b. 2
c. 3
d. Error in the stmt
3. The data dictionary view to see the list of constraints enabled on a table is
a. user_tables
b. user_table_constraints
c. user_constraints
d. There is no dictionary view available for the same
4. Identify the pseudocolumns
a. rowid
b. sysdate
c. rowval
d. dual
5. Select deptno, count (empno) from emp
Where count(empno)>=5
group by deptno;
identify the line no which contains the error
a. 1
b. 2
c. 3
d. 1,3
6. Choose the group function that can be used with any data type
a. sum()
b. min()
c. avg()
d. all
7. which of the following sequence is true
a. WHERE,HAVING,GROUPBY,ORDERBY
b. GROUPBY, WHERE, HAVING, ORDERBY
c. ORDERBY,GROUPBY,WHERE,HAVING
d. NONE OF THE ABOVE
8. Which of the proper keyword to deallocate memory
a. free
b. delete
c. clear
d. remove
9. What is the index no of the last element of an array with 29 elements
a. 29
b. 28
c. 0
d. programmer defined
10. What is the final value of x when the code for (int x=0; x<10; x++) is run?
a. 10
b. 9
c. 0
d. 1
11. What is the data type of FILE?
a. integer
b. union
c. pointer
d. structure
12. if “a” is an array of 5*5 dimension, a[2][4] is same as
a. **(a+2+4)
b. *(a+2) + *(a+4)
c. **(a+2)+4
d. *(*a+2)+4)
13. what is the output of #include
void main()
{
char buffer[10]={“Genesis”};
printf(“%d”,&buffer[4]-(buffer));
}
a. 3
b. 4
c. 0
d. illegal pointer subtraction
14. what is the output for
#include
main()
{
static int a[]={5,10,15,20};
int * ptr=a;
int ** ptr_ptr=&ptr;
printf(“\n %d”,**ptr_ptr++);
}
a. 5
b. 10
c. 15
d. 6
15. what is the value of expression
1+2/3*4+1
a. 2
b. 3
c. 4
d. 4.666666
e. 5