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1)minimum #of ip addresses requiered for an router
ans)2
2)the worst case booth complexity for
ans)101010101010101010
3)disadvantage of pcm
ans)forgot
4)two binary 8bits are added overflow will come for
a)ones complement
b)twos complement
c)ones complement with signed magnitude
c)twos complement with signed magnitude
5)two 8 bit nuos are multiplied and the result is stored in
an rom the size
of the rom is
ans)64*64 doubt
6)how many no of 4x1 muxs are required for making an 16x1
mux
ans)5
7)a simple nand gate problem
ans)simple
8)the shannon hartley therom give the
ans)channel capacity with no error
9)the bandwidth for 500bps is
ans)1000bps doubt
10)a problem with lower triangular matrix
ans)x[i]=b[i]-a[i][j]*x[i]
11)a c program with
if x>y
x=x-y
else
y=y-x
ans)gcd
12)microwave propogation along the curvature of earth is
called
ans)ductpropogation
13)a simple bit on recurssion

14)csma/cd is used in
ans)ethernet
15)what is used for knowing its own ip address
ans)rarp
16)no signalling is needded to establish connection in
ans ) ip
17)a simple problem, on newton rapshon method
18)(A-B)U(B-A)U(AnB)=
ANS)AUB
19)
if a number is choosen between 100 and 999 includeing these
numberrs what is the provbabilty that the number selected
does not contain a 7 is
ans)workitout
20)a packet trabvelling in the internet forever can be
controlled by having the field
ans)time to live (ttl)
21)c code with the follwing choices
a)call with value
b)call with address
c)call with value result
ans)call with value result
22) when the following sequence is inserted in the binary
search tree no of nodes int left subtree and right sub tree
is
ans )7,4
23)simple problem in recurssion
x(x(5))
ans)17
24)study about reentrant code reusable code recursive code
25)given edges nodes and components of a graph find out its
rank

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26)in a tree a parent is greater than all its children in
folling
ans)heap
27)question on pcm signal=3khz 8levels are used
ans)18000bps
28)to get the numberr in ascending order the traversal used
is
ans)inorder traversal
29)a problem in
multiprocessing ,multithreading ,multiprogramming
ans)multithreading

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SNAPDEAL QUESTIONS 1. A train is going at a speed of 60kmph towards Delhi and returned back at a speed of 30kmph. What is its average speed? ANS : (2*30*60)/(30+60) = 40kmph 2. How many different 4 letter words can be framed that have at least one vowel? ANS : 264 - 214 (total no of 4 digits words – no of words with no vowels) 3. Write an algorithm to find out a number from an array of numbers where only one number occurs once and rest all occurs twice. ANS : XOR all the numbers ,you will get the number with single occurrences . 4. Which among the following have the product of the distance between opposite sides of a regular polygon and it side equals one fourth of the area. A. hexagon B. octagon C. n=16 D. n=18 ANS : n=16.(area of regular polygon = apothem*perimeter/2 Apothem = distance between opposite sides/2 Area = (opp_side_dist * n * a )/4 Product of opp_side_dist and side of reg. polygon = opp_side_dist * a For n= 16 the ration becomes 1:4 5. Which of the following cannot be a relation between two variables? ANS = 4th diagram. 6.what will be the output of this program Void print (int n) { If (n>0) { printf(“hello”); print(n-1); } printf(“world”); } ANS : N times hello followed by N+1 times world. 7. Which among the following cannot be used for future prediction? ANS : 4th Diagram. 8. There are 25 horses. We have to find out the fastest 3 horses In one race maximum 5 horses can run. How many such races are required in minimum to get the result. ANS : 7 races (A. first run all horses = 5 races, eliminate 4th 5th of all races. B. Run horses who came 1st in those 5 races = 1 race , the horse coming first is the fastest Run horses a. 2nd and 3rd with the fastest horse (in first time race A) b. 2nd and 3rd coming horse in B. c. The horse who came 2nd with the horse(who came 2nd in race B) in race A You will have the fastest 3 horses.) 9. In a game of rolling dice you are given 2 dice and you have to roll them. Whatever is the outcome the player will win that many dollars. What should the game owner charge each player (optimum) so that he doesn’t have to bear any loss? ANS : $7 10. We have a function REV(“string”,m,n).This function is capable of reversing the caharacters in the string from mth location to nth location. e.g. REV(“abcd”,2,3)  the output will be acbd We need to swap a string from a position,e.g. SWAP(“abcdefg”,4)  output needs to be efgabcd. How can the REV function used do this. ANS : L = string length,N= position given in SWAP function. SWAP(“abcdefg”,4) = REV(REV(REV(“abcdefg”,N+1,L),1,N),1,L).

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