Cisco Placement Papers

1> The starting location of an array is 1000. If the array[1..5/...4] is stored
in row major order, what is the location of element [4][3]. Each work occupies
4 bytes.

2> If the number of leaves in a binary tree are N, then the total number of
internal nodes........(Assume complete binary tree)

ANS: N-1

3> The locality of reference means.............

4> If two ausigned 8 bit numbers are multiplied what is the memory space
required...............

5> The vector address of RST 7.5 is ............

ANS: 003C (multiply 7.5 by 8 and convert to hex)

6> int b = 0xAA;
b>>4;
printf("%x",b);

What is the output of the above program....

7> struct s1 { struct { struct {int x;}s2}s3}y;

How to access x? ANS: y.s3.s2.x


8> Why there is no recursion in Fortran?

ANS: There is no dynamic location (Check this)

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

ANS: O(n^2)

10> Quick sort uses..............

Ans: Divide and conquer

11> In a sequential search, the time it takes to search through n elements is

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

ANS: 5* sizeof (double *)

13> A binary search tree is given and asked to write the preorder traversal
result.

14> If size of the physical memory is 2^32-1, then the size of virtual
memory......

15> S-> A0B
A-> BB|0
B-> AA|1 How many strings of length 5 are possible with the above
productions??

16> (3*4096+15*256+3*16+3). How many 1's are there in the binary representation
of the result.

ANS: 10

17> In memory mapped I/O how I/O is accessed.............

ANS: Just like a memory location (Means, I/O devices can be accessed using
the instructions like mov A,M etc...)

18> What is the use of ALE in 8085.......

ANS: To latch the lower byte of the address.

19> If the logical memory of 8 X 1024 is mapped into 32 frames, then the number
of bits for the logical address ......

ANS: 13

20> Context free grammar is useful for...

ANS: If-then structures.