Infosys  Placement Paper   Aptitude - Puzzle   -

#### Infosys  Placement Paper   Aptitude - Puzzle   -

• Posted by  FreshersWorld
7 Jan, 2012

1. Number of null pointers in any binary tree = n+1
2. max(t1,t2,...tn) = pipelining
3. 50% -DBETXXXXXX - density
4. print (Head(T)) Traverse(left(T)) print (Head(T)) Traverse(right(T)) - ans: none of the above
5. Boolean expn Evalvate
6. Common subexpn : - ans : a + e
7. LRU : 1, 2, 3.
8. Tr. Delay - 10000 bits ans. 10.01
9. Grammar of Number of shift / reduce operator : ans. 4
10. CPU scheduling 9,8 ?
11. if even x/2 else p(p(3x+1)) 2^k + 1: 3 . 2^(k-1) clarify this with sans
12. allocation ans: (ii) only
13. swapping : ans: reference only
14. Compiler - related Qn.
15. LAN frames - ? related Qn.
16. parameter passing (35,20)
17. sliding window protocol- BUFFER SIZE large
18. kernel mode - deallocate resource
19. logic circuit ans . Minimum OR = 3
20. Combinatorics related
21. priority scheduling
22. cobegin, begin x = y; x= x+1; y= x,  begin x =y; z= z+1; y= z ,coend ,ans. Number of values possi = 2
23. 2 bits flip / 2 bits exchange,ans : the word with one '1'
24. any addr, K^+ v(a) + 2I - 2a