Company: Cisco Systems

CISCO Placement Paper

Technical Paper

Chennai, 2008

1. The starting location of an array is 1000. If the array[15/4] is stored in row major order, what is the location of element [4,3]. Each word occupies 4 bytes.

2. In a tertiary tree, which has three childs for every node, if the number of internal nodes are N, then the total number of leaf nodes are

3. Explain the term “locality of reference” ?

4. What is the language used for Artificial Intelligence
Ans: lisp

5. What is the character set used in JAVA 2.0 ?
Ans: Unicode

6. char a =0xAA ;
int b ;
b = (int) a ;
b = b >> 4 ;

What is the output of the above program segment ?

7. struct s1 { struct { struct { int x; } s2 } s3 }y;
How does one access x in the above given structure definition ?

8. Why there is no recursion in Fortran ?

Ans. There is no dynamic allocation.

9. What is the worst case complexity of Quick sort?

Ans. O(n2)

10. What will be sequence of operating system activities when an interrupt occurs ?

11. In a sequential search, what is the average number of comparisons it takes to search through n elements ?

Ans: (n+1)/2.

12. What is the size of the array declared as double * X[5] ?

Ans. 5 * sizeof ( double * )

13. A binary search tree with node information as 1,2,3,4,5,6,7,8 is given. Write the result obtained on preorder traversal of the binary search tree ?

Ans : 53124768

14. If size of the physical memory is 232-1, then what is the size of the virtual
memory ?

15. S -> A0B
A-> BB|0
B-> AA|1