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CISCO Placement Paper
Posted Date: 06 Mar 2008 Resource Type: Articles/Knowledge Sharing Category: Placement Papers
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Posted By: Girish Patil Member Level: Diamond
Rating:  Points: 5
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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 allocation
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.
21> In ternary number representation, numbers are represented as 0,1,-1.
Here
-1 is represented as - (1 bar). Then how is 352/9 represented......
1
22> There are processors which take 4,1,8,1 machine cycles respectively. If
these are executed in round robin fashion with a time quantum of 4, what is
the
time it take for process 4 to complete....
ANS: 9
23> The minimum frequency of operation is specified for every processor
because......
24> In memory mapped I/O, what will happen if a device is identified with a
16
bit address and enabled by memory related control signals.....
25> The reason for preferring CMOS over NMOS is....
Ans: Low power consumption.
26> Two binary numbers A,B are given and asked to find out A-B.
27> Each character is represented by 7 bits, 1 bit is used to represent
error
bit and another bit for parity. If total number of bits transmitted is
1200bits, then number of symbols that can be transmitted.......
28> One question about the setassociativity of cache..
29> Write the postfix form of the following expression...
A+[[(B+C)+(D+E)*F]/G]
30> What is the function of the linker......
31> void f(int y)
{
struct s *ptr;
ptr = malloc (sizeof (struct)+ 99*sizeof(int));
}
struct s{
int i;
float p;
};
when free(ptr) is executed, then what will happen??
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