Hughes Software systems
Hughes Software systems

Company: Hughes Software systems


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)

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.l inked 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=”” trivial=”” c….=”” d….=””

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

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

18.=”” critical=”” section=”” program=”” segment=”” enclosed=”” by=”” semaphores=”” with=”” p=”” &=”” v=”” operations=”” deadlock=”” avoidance=”” where=”” shared=”” resources=”” are=”” accessed=”” …=””

19.=”” when=”” head=”” moving=”” back=”” forth,=”” disk=”” scheduling=”” algorithm=”” _____=”” a)=”” scan=”” b)=”” sstf=”” c)=”” fcfs=”” d)….=””

20.=”” how=”” many=”” times=”” loop=”” will=”” execute=”” lxi=”” b,1526h=”” dcx=”” b=”” jnz=”” 1526h=”” 31=”” 21=”” d)=”” 38=””

21.=”” addressing=”” mode=”” which=”” address=”” operand=”” expressed=”” explicitly=”” within=”” instruction=”” index=”” absolute=”” indirect=”” immediate=””

22.=”” (a=”” -=”” u=”” (b=”” ^=”” a,b=”” two=”” sets=”” a’=”” ,=”” b’=”” compliments=”” c)….=””

23.=”” network=”” that=”” does=”” use=”” virtual=”” circuit=”” ip=”” x.25=”” d)..=””

24.=”” source=”” routing=”” bridge=”” route=”” frame=”” routed=”” info=”” header=””

25.=”” cache=”” access=”” time=”” 100=”” msec.=”” main=”” memory=”” 800=”” msec=”” if=”” hit=”” ratio=”” 95%=”” what=”” mean=””

26.=”” module=”” should=”” be=”” always=”” reside=”” loader=”” link=”” c)…=”” some=”” questions=”” related=”” to=”” 1.=”” 2.assembler=”” passes=”” 3.linking=”” loading=”” 4.=”” file=”” directory=”” search=”” 5.=”” turning=”” machine=”” 6.=”” finite=”” state=”” 7.=”” daisy=”” wheel=””

27.=”” order=”” merge=”” sorted=”” lists=”” lengths=”” n=”” o(m)=”” o(n)=”” o(m+n)=”” o(log(m)+log(n))=””

28.=”” chocolate=”””” cuts=”” needed=”” make=”” size=”” blocks.=”” no=”” simultaneous=”” vert.=”” horz.=”” cuts.=””

29.=”” among=”” following=”” correct=””> O(log n) .. likewise</n,>

Section C

1.One question of Set Theory Like there Are two sets A and B and (A-B)union(B-A)union(A intersection B)
is equivalent to Ans. A union B

2.Union and intersection are in there sign conventions.

3.One question of probability Like between 100 and 999 how many no have the prob that they does not contain 7
Ans. 16/25 (not sure u can check by own)

4.Of Newton Rapson method…

5.Of power set A set contains {(fi),a,{a,b}} what is the powerset of it Ans. 8

6.A question of logic gates Ans. U can got the answer very easily

7.A question on the Booths algo Ans. The sequence is 1010101010101010

8.Relative addressing mode is used for Ans. Dont know.

9.For how many numbers there is no difference between little endian and big endian
Ans. 256

10.For the multiplication of two 8 bit numbers how much ROM will be used
Ans. 64k*16 ROM(Check it)

11.Why direct mapping is not good for the mapping of Cache Memory.
Ans. Dont know

12.What is the main property of Desiy I/O Sytem Ans.

13.A question on the nyquist theorem
Ans. 18000 bps

14.What is the shannon theorem…
Ans. Refer to data communication(Stalling) book

15.CSMA/CD protocol is used in
Ans. Ethernet

16.What is the limitation of the Pulse Code Modulation
Ans. Refer to data communication book

Ans. The Access to the channnel is probabilistic.

18.For an IP Router how many IP addresses
Ans. Check it i think Answer is Only One.

19.Which protocol u used when you want to know the IP address corresponding to a MAC Address

20.Which part of the IP header is used for the time limit of the packet.
Ans. TTL

21.Which PageReplacement algo will give the best result
Ans. By replacing that page which has the next reference after a long time.(optimal algo)

22.What the code will be said when it is called by another part and it is not completed yet
Ans. Reentrant Code.

23.three questions on the simple programs

24.There is a sequence of no and prepare a binary tree and tell how many nodes are in the left and right sub tree.
Ans. Check it Ans (4,7)

25.hat is the rank of the graph
Ans. e-n+k

26.One question on the multithreading

27.Which traversal of the tree gives the node in the ascending order.
Ans. Inorder

28.Which traversal of the tree gives the node in the ascending order.
Ans. Inorder

29.What is garbage collector.

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