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Wipro paper (System software) July-1997
 
PART --A
 
1) abcD+abcd+aBCd+aBCD
   then the simplified function is
   ( Capital letters are copliments of corresponding letters
    A=compliment of a)
   [a] a   [b] ab [c] abc [d] a(bc)* [e] mone
 (bc)*=compliment of bc
Ans: e
 [a] 1k bytes [b] 0.5k bytes [c] 2k bytes [d] none
 Ans: b
3) In a processor these are 120 instructions . Bits needed to impliment
this instructions
 [a] 6 [b] 7 [c] 10 [d] none
Ans: b
4) In 8085 microprocessor READY signal does.which of the following
is incorrect statements
   [a]It is input to the microprocessor
[b] It sequences the instructions
 Ans : b
5) Return address will be returned by function to
 [a] Pushes to the stack by call
   Ans : a
6) n=7623
 {
temp=n/10;
 result=temp*10+ result;
 n=n/10
}
Ans : 3267
7) If A>B then
 F=F(G);
else B>C then
F=G(G);
in this , for 75% times A>B and 25% times B>C then,is 10000 instructions
 [a] 7500:2500 [b] 7500:625 [c] 7500:625 if a=b=c else
   7500:2500
8) In a compiler there is 36 bit for a word and to store a character 8bits are
needed. IN this to store
a character two words are appended .Then for storing a K characters string,
How many words are needed.
[a] 2k/9 [b] (2k+8)/9 [c] (k+8)/9 [d] 2*(k+8)/9 [e] none
Ans: a
9) C program code
 
int zap(int n)
{
if(n<=1)then zap=1;
else zap=zap(n-3)+zap(n-1);
}
   then the call zap(6) gives the values of zap
[a] 8 [b] 9 [c] 6 [d] 12 [e] 15
Ans: b
PART-B
1) Virtual memory size depends on
[a] address lines    [b] data bus
[c] disc space       [d] a & c    [e] none
Ans : a
2) Critical section is
[a]
[b] statements which are accessing shared resourses
Ans : b
 
3) load a
mul a
store t1
load b
mul   b
store t2
mul t2
add t1
 
then the content in accumulator is
 
Ans : a**2+b**4
4) question (3) in old paper
5) q(4) in old paper
6) question (7) in old paper
7) q(9) in old paper
 
 
 
 
 
 
 
 
 

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