Wipro paper(System software)

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] none
(bc)*=compliment of bc
Ans: e

2) A 12 address lines maps to the memory of[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 are there ,then the ratio of F to G [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] disk space [d] a & c 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 to 7) repeated from old papers