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Vijay007
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Joined: 02Feb2007
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Quote Vijay007 Replybullet Topic: Difficulty of Test7 and other questions
    Posted: 02Feb2007 at 5:18pm
Hi frendz,

1)int main()
{
int z, x = 5, y = -10, a = 4, b = 2;
clrscr();
z = x++ - --y*b/a;
printf("%d \n",z);
}
unable to understand the evaluation of expression ? i have checked on Turboc Ans is 10 can any body explain pls how it comes?

2)In a certain machine data references constitute 40% of the mix, and that the ideal CPI of the pipelined machine is 1. Assume that the machine with structural hazards has a clock rate that is 1.05 times higher than the clock rate of machine without hazard. What is effective speedup with pipelining without structural hazard?

A. 1.05
B. 1.3
C. 1
D. none of above

3) Consider three tables with following number of tuples in each
S(a,b,c) = 100
R(a,d,e) = 80
T(x,d,f) = 90
Tuples in S and R with same value of attribute “a” = 60
Tuples in R and T with same value of attribute “d” = 70
Maximum and minimum number of tuples in (S left outer join R) full outer join T is:

A. 130 120
B. 150 140
C. 140 130
D. 140 120

Pls explain in detail how the ans comes?

4)Let A be a sequence of 8 distinct integers sorted in ascending order. How many distinct pairs of sequences, B and C are there such that
(i) each is sorted in ascending order,
(ii) B has 5 and C has 3 elements,
(iii) the result of merging B and C gives A?

A. 2
B. 30
C. 56
D. 256

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