Showing posts with label Important Questions. Show all posts
Showing posts with label Important Questions. Show all posts
Mobile Computing Important Questions

Mobile Computing Important Questions

Folks,

Mobile Communication Frequently Asked Questions.

Note: No one claims that these questions will be asked in the examination or whatsoever. These are the frequently asked questions in MC.


2 Marks:

1.what is frequency spectrum?
2.what is wave length?
3.what is a signal?
4.what is line sight?
5.what is differents between ground wave nd sky wave?
6.Differences shadwing and tifraction?
7.what is multiflexing on it's types?
8.what is spread spectrum?
9.Mention the types of satillite orbits?
10.what is sallelite?
11.what is Mac(Medium Acess control)?
12.what is Gsf(global system for Mobile Communication)?
13.what are the servies provided by gsm?
14.what is Rss,NSS&oss?
15.what is hand over?
16.what are the types of hand over?
17.what do you by security?
18.what is Gprs?
19.Difference between infra structure and adhoc network?
20.write about IEEE.802.11 std?
21.what is hyper lane?
22.what is bluetooth?
23.Difference between pico net & scatter net?
24.what is use of DHCP (Dymanio Host Confiration protocol)?
25.what is Multi cast routing?
26.Difference between pro-actives and re-actives?
27.Expandling the product WAP,WWW,WDP,WTLS,WSP,WAE,&WML.

5 Marks:

1.write notes on singal propergation?
2.Explain about path loss of radio signals?
3.Explain about SDMA,TDMA,CDMA&FDMA?
4.Explain spread spectrum?
5.Explain the protocol Arichture of Gsm?
6.write about Gprs and it's Arichture's?
7.Explain IEEE 802.11?
8.write Infra structure and hand lock networks?
9.what is hyper lane?
10.Explain about bluetooth?
11.what is Mobile Ip?
12.Explain about DHCP(Dymanio Host confiration protocol)?
13.Explain about Multicast Routing?
14.write Notes tcp over.adhoc network?
15.Describe about WAP Architure?
16.Describe Architure of www?
17.Explain about Wsp and wtp?

10 Marks:

1.Describe about satellite system and it's types based on it's orbits?
2.Explain in detail's about Gsm Architures?
3.Explain about handover and it's types?
4.Explain about bluetooth techonology?
5.Explain about pro-active and re-active protocols?
6.Explain about WTA Architure?
7.Explain about WML Architure?
8.Explain about WAE?
9.Explain about Infra struture and adhoc network's?
10.IEEE 802.11 standard?

-Chief Administrative Officer.
Web Technology Important Questions

Web Technology Important Questions

Folks,

Note: No one claims that these questions will be asked in the examination or whatsoever. These are the frequently asked questions in WT.

TCP/IP
FTP
Tables
Hyperlink Documents
Lists
Ordered List
Unordered List
Telnet

Concentrate on first 3 chapters as it has more weightage. Few question will be asked from 4th and 5th chapter, if you study, you will gain more marks.

-Chief Administrative Officer.
TCS Sample Aptitude Q & A 2014

TCS Sample Aptitude Q & A 2014

Folks,


Note: These are not sample questions, but questions that explore some of the concepts that may be used. The intention is that you should get prepared with the concepts rather than just focusing on a set of questions. 

1. What are the total number of divisors of 600(including 1 and 600)? 
a.  24 
b.  40 
c.  16 
d.  20 
Sol: Option a
If N=ap×bq×cr.... then the number of factors of N = (p+1)(q+1)(r+1) ....
600 = 23×3×52 
So number of factors of 600 = (3+1)(1+1)(2+1) = 24

2. What is the sum of the squares of the first 20 natural numbers (1 to 20)? 
a.  2870 
b.  2000 
c.  5650 
d.  44100 
Sol: Option a
Use formula n(n+1)(2n+1)6

3. What  is ∑K=028K2(28KC) where 28KC is the number of ways of choosing k items from 28 items? 
a.  406 *  227  
b.  306 *  226   
c.  28 *   227
d.  56 *   227
Sol: A
Consider (1+x)n=C0+C1x+C2x2+.....+Cnxn .......(1)
Differentiating w.r.t x we get
n(1+x)n−1=C1+2C2x+3C3x2+.....+nCnxn−1
Multiplying by x on both sides,
x.n(1+x)n−1=x.C1+2C2x2+3C3x3+.....
Now again differentiating w.r.t to x 
n(1+x)n−1+n(n−1)x(1+x)n−2=C0+22C1x+32C2x2+42C3x3.....
Putting x = 1, we get
n(n+1)2n−2=C1+22C2+32C3+42C4
Now substituting n = 28
28(28+1)228−2 = 812.226 = 406.227

4. What is ∑K=0283K(28KC) where 28KC  is the number of ways of choosing k items from 28 items? 
a. 256
b.  3* 227
c. 329
d. 3* 427 
Sol: Option A
We know that C0+3C1+32C2+.....+3nCn=4n
Substitute n = 28
We get ∑K=0283K(28KC) = 428= 256

5. A call center agent has a list of 305 phone numbers of people in alphabetic order of names (but she does not have any of the names).  She needs to quickly contact Deepak Sharma to convey a message to him.  If each call takes 2 minutes to  complete, and every call is answered, what is the minimum amount of time in which she can guarantee to deliver the message to Mr Sharma. 
a.  18 minutes 
b.  610 minutes 
c.  206 minutes 
d.  34 minutes 
Sol: Option A

6. The times taken by a phone operator to complete a call are 2,9,3,1,5 minutes respectively.  What is the average time per call? 
a.  4 minutes 
b.  7 minutes 
c.  1 minutes 
d.  5 minutes 
Sol: Option A

7. The times taken by a phone operator to complete a call are 2,9,3,1,5 minutes respectively.  What is the median time per call? 
a.  5 minutes 
b.  7 minutes 
c.  1 minutes 
d.  4 minutes 
 Sol: NO option is correct. Median is 3

8. Eric throws two dice, and his score is the sum of the values shown.  Sandra throws one die, and her score is the square of the value shown.  What is the probability that Sandra’s score will be strictly higher than Eric’s score? 
a.  137/216 
b.  17/36 
c.  173/216 
d.  5/6 
Sol: A

9. What is the largest integer  that divides  all three numbers 23400,272304,205248 without leaving a remainder? 
a.  48 
b.  24 
c.  96 
d.  72 
Sol: Option B
Find GCD

10. Of the 38 people in my office, 10 like to drink chocolate, 15 are cricket fans, and 20 neither like chocolate nor like cricket.  How many people like both cricket and chocolate? 
a.  7 
b.  10 
c.  15 
d.  18 
Sol: Option A

11. If f(x) = 2x+2 what is f(f(3))? 
a.  18 
b.  8 
c.  64 
d.  16 
 Sol: Option A

12. If   f(x) = 7 x +12, what is f-1(x) (the inverse function)? 
a.  (x-12)/7 
b.  7x+12 
c.  1/(7x+12) 
d.  No inverse exists 
Sol: Option A

13. A permutation is often represented by the cycles it has.  For example, if we permute the numbers in the natural order to 2 3 1 5 4, this is represented as (1  3 2) (5 4).  In this the (132) says that the first number has gone to the position 3, the third number has gone to the position 2, and the second number  has gone to position 1, and (5 4) means that the fifth number  has gone to position 4 and the fourth number  has gone to position 5.  The numbers with brackets are to be read cyclically.  If a number  has not changed position, it is kept as a single cycle.  Thus 5 2 1 3 4 is represented as (1345)(2). We may apply permutations on itself If we apply the permutation (132)(54) once, we get 2 3 1 5 4.  If we apply it again, we get 3 1 2 4 5 , or (1 2 3)(4) (5) If we consider the permutation of 7 numbers (1457)(263), what is its order (how many 
times must it be applied before the numbers appear in their original order)? 
a.  12 
b.  7 
c.  7! (factorial of 7) 
d.  14 
Sol: Not yet solved

14. What is the maximum value of x3y3 + 3 x*y when x+y = 8? 
a.  4144 
b.  256 
c.  8192 
d.  102 
Sol: Option A
The question probably be x3.y3+3x∗y
Sustitute x = 4 and y = 4

15. Two circles of radii 5 cm and 3 cm touch each other at A and also touch a line at B and C. The distance BC in cms is? 
a.  60−−√ 
b.  62−−√ 
c.  68−−√ 
d.  64−−√ 
Sol: Option A
d2−(r1−r2)2−−−−−−−−−−−−√
d = distance between centers

16. In Goa beach, there are three small picnic tables. Tables 1 and 2 each seat three people.   Table 3 seats  only one person, since two of its seats are broken. Akash, Babu, Chitra, David, Eesha, Farooq, and Govind all sit at seats at these picnic tables. Who sits with whom and at which table are determined by the following constraints: 
a.  Chitra does not sit at the same table as Govind. 
b.  Eesha does not sit at the same table as David. 
c.  Farooq does not sit at the same table as Chitra.  
d.  Akash does not sit at the same table as Babu. 
e.  Govind does not sit at the same table as Farooq. 

Which of the following is a list of people who could sit together at table 2? 
a.  Govind, Eesha, Akash 
b.  Babu, Farooq, Chitra 
c.  Chitra, Govind, David. 
d.  Farooq, David, Eesha. 
Sol: Option A

17. There are a number of chocolates in a bag.  If they were to be equally divided among 14 children, there are 10 chocolates left.  If  they were to be equally divided among 15 children, there are 8 chocolates left.  Obviously, this can be satisfied if any multiple of 210 chocolates are added to the bag.  What is the remainder when the minimum feasible number of chocolates in the bag is divided by 9?   
a.  2 
b.  5 
c.  4 
d.  6 
Sol: Option B

18. Let f(m,n) =45*m + 36*n, where m and n are integers (positive or negative)  What is the minimum positive value  for f(m,n) for all values of m,n (this may be achieved for various values of m and n)? 
a.  9 
b.  6 
c.  5 
d.  18 
Sol: Option A

19. What is the largest number that will divide 90207, 232585 and 127986 without leaving a remainder? 
a.  257 
b.  905 
c.  351 
d.  498 
Sol: Option A

20. We have an equal arms two pan balance and need to weigh objects with integral weights in the range 1 to 40 kilo grams. We have a set of standard weights and can  place the weights in any pan. . (i.e) some weights can be in a pan with objects and some weights can be in the other pan. The minimum number of standard weights required is: 
a.  4 
b.  10 
c.  5 
d.  6 
 Sol: Option A

21. A white cube(with six faces) is painted red on two different faces.  How many different ways can this be done (two paintings are considered same if on a suitable rotation of the cube one painting can be carried to the other)? 
a.  2 
b.  15 
c.  4 
d.  30  
 Sol: Option A

22. How many divisors (including 1, but excluding 1000) are there for the number 1000? 
a.  15 
b.  16 
c.  31 
d.  10 
 Sol: Option A

23. In the polynomial   f(x) =2*x^4 - 49*x^2 +54, what is the product of the roots, and what is the sum of the roots (Note that x^n denotes the x raised to the power n, or x multiplied by itself n times)? 
a.  27,0 
b.  54,2 
c.  49/2,54 
d.  49,27 
 Sol: Option A

24. In the polynomial f(x) = x^5 + a*x^3 + b*x^4 +c*x + d, all coefficients a, b, c, d are integers. If 3 + sqrt(7) is a root, which of the following must be also a root?(Note that x^n denotes the x raised to the power n, or x multiplied by itself n times. Also sqrt(u) denotes  the square root of u, or the number which when multiplied by itself, gives the number u)? 
a.  3-sqrt(7) 
b.  3+sqrt(21) 
c.  5 
d.  sqrt(7) + sqrt(3) 
Sol: Option A

-Chief Administrative Officer.
Framed by C.A.O.

Framed by C.A.O.

Folks,

The following are the data structures 10 and 5 mark questions framed by the C.A.O. for the 2nd year students.

10 marks:

1. Discuss the various operation of Array with example.
2. Explain the conversion of infix to posting. Express the algorithm with example.
3. Explain insert, delete operation of singly linked list with algorithm.
4. Explain Dijkstra's shortest path algorithm.
5. Explain merge sort algorithm with example.
6. Discuss binary tree traversal.
7. Write algorithm for binary search and explain.
8. Explain quick sort algorithm with example.
9. Explain the applications of queue.
10. Explain the addition of polynomial with algorithm.
11. Explain doubly linked list in detail.
12. Explain hashing function in detail.
13. Explain with an example of recursion and applications of stack.


5 Marks:

1. Explain asymptotic notation.
2. Write short note on ordered list.
3. Write down the algorithm of PUSH, POP of stack.
4. Explain with an example of recursion and applications of stack.
5. Write short note on circular linked list.
6. Explain the conversions of forest to binary tree.
7. Write a short note on divide and conquer approach.
8. Explain the operations of stack.
9. Explain the operation of queue.
10. Explain about insertion and deletion of linear queue.
11. Explain singly linked list.
12. Write the types of graph in detail.
13. Explain the algorithm of postfix evaluation.

This has been framed by the C.A.O. himself based on the syllabus and the same cannot be considered to be the important or mostly repeatedly asked questions. Claims pertaining to the same will not be entertained. 

-Chief Administrative Officer.