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				HUGHES
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Source : iit k ( this paper is got from rookee and same is 
given in iitk) 
section A 30m (Compulsary)
section B or C  20 m(changed )m
Attempt either B or C     sec B contains CST
			      C          E&C
Better to attempt Electronics paper
(Those who are having electronics background)
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			   SECTION A

1. Which of the folowing is not correct
   a. (x+y)'=x'.y'   b. (x'+y')'=x.y
   c. (x'.y')'=x+y   d. (x'+y')'=x'.y'     [d]

2. Question on logic ckt. U have to find the output
     ans.   AB'+CD'+EF'

3. Output of MUX 
       _________
 c-----|       |
 c'----|       |-------Y
 c'----|       |             ans. A xor B xor C
 c-----|       |
       ---------
	|   |
	A   B  (select lines)

4.If X and Y are two sets. |X| and |Y| are corresponding
  coordinates and exact no.of functions from X to Y is 97
  then
  a. |X|=97  |Y|=1   b. |X|=1   |Y|=97
  c. |X|=97 |Y|=97   d.  .....

5. If two dies are thrown simultaneously what is the prob.
   of one of the dice getting face 6 ?
   a. 11/36   b. 1/3  c. 12/35  d. 1/36     [a]

6. The relation ,<,on reals is 
   a. a partial order because of symmetric and reflexive
   b.     ...                   antisymmetric and ....
   c. not ......     ..         asymmetric and non reflexive
   d. ...          ....         not anti-symm and non 
reflexive

7. In C language the parameters are passsed by
   a. values b. name   c.referrence  d....

8. Advantage of SRAM over DRAM   
   ans. faster

9. Diasy chaining related question (refer Z80)
   a. uniform interrupt priority
   b.non ....       ....
   c.interfacing slower peripherals
   d.....

10. RAM chips arranged in 4X6 array and of 8kX4bit capacity
    each. How many address lines reqd. to access each byte
     a. 12 b. 16 c.15 d. 17

11.Question related to AVL trees regarding how many no.of
   nodes to be changed to become balanced after addition of
    a leaf node to a particular node.
       ans . 3

12.When following sequence is insertedin the binary search 
tree
   no.of nodes in left and right subtrees
   52 86 64 20 3 25 14 9 85

13.Method used for Disk searching..
  a.linked list  b.AVL  c.B-tree d. binary tree

14. Which of the following is correct statement.
   a. 1's complement can have two zero re[resentations
   b.2's  ...       ...  represent an extra neg. number
   c.2's & 1's have no difference in representing 16-bit no.
   d.......

15. AX=B where A is mXn ,b&X are column matrices of order m
  a. if m<n, X  has infinite solutions
  b.if m=n, rank of A <n then X has trivial solutions
  c....  d....

16. The option avialable in C++, not C:
  a.dynamic scoping
  b.declaration in the middle of code block
  c.seperate compiled and linked units
  d. ....

17.   int a[4]={1,2,3,4};
      int *ptr;
      ptr=a;
      *(a+3)=*(++ptr)+(*ptr++);
       A part of code is shown. The elements in A after
       the execution of this code.
    a.1 2 3 4     b. 1 2 3 6
    c. compilation error   d.1 2  2 4    [a]

18. Critical section program segment is
   a. enclosed by semaphores with P & V operations
   b. deadlock avoidance
   c. where shared resources are accessed
   d. ...


19. when head is moving back and forth, the disk scheduling 
algorithm is _____
a) scan      b) sstf     c) fcfs    d).....

20. how many times the loop will execute

	LOOP  LXI  B,1526H
	      DCX  B
	      JNZ  LOOP 
a)1526H times   b) 31    c)21    d)38

21. the addressing mode in which the address of the operand 
is
expressed explicitly within the instruction 
a)index addressing     b)absolute    c)indirect    d) 
immediate

22. (A - B) U (B - A) U (A ^ C) = ?
where A,B are two sets A' , B' are compliments of A and B
a) A U B   b) A ^ B   c)....    d).....

23. the network that does not use virtual circuit 
a) IP   b) X.25      c)....  d).....

24. source routing bridge 
a)source will route the frame 
b)frame will routed with info in header
c)....      d).....


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26. cache access time 100 msec. main memory access time  
800 msec
if the hit ratio is 95% , what is mean access time ...

27. the module that should be always reside in main memory 
is
a) loader   b)link module  c)... d)....

   .... and some questions related to

1. addressing mode  2.assembler passes    3.linking and 
loading
4. file directory search   5. turning machine 
6. finite state machine   7. daisy wheel

28. The order of algorithm to merge the two sorted lists of 
   lengths m and n is 
    a. O(m)  b. O(n) c. O(m+n)  d. O(log(m)+log(n))
29.A chocolate block is of 4 X 4 size.How many cuts are 
needed
   to make 1 X 1 size blocks. No simultaneous vert. & horz. 
cuts.

30. Which among the following is not correct
    a.  O(n) > O(log n)   ..  likewise
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Hughes Placement Papers | Hughes Interview Procedure | 
Hughes Aptitude Questions | Hughes TechniHughesl Questions 
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