December 2010

Please download the December 2010 paper Here

Please find the key for December 2010 question paper. Please leave a comment if you find any wrong answers.

	1	2	3	4	5	6	7	8	9	10
1 to 10	B	A	C	D	C	D	B	C	C	A
11 to20	C	D	D	B	C	B	C	A	C	C
21 to30	D	D	D	B	C	C		C	A
31 to40	B		C	A	B	C	B	B	C	B
41 to50	C	D	B	B	A	D		C	D	A

Explanation:

1. The  number  of  integers  between 1and 250 that are divisible by 2, 5 and7 is


 Answer (B) 3
Solution: 
take LCM of 2,5,7 = 70

divide 250 with 70 = 3

numbers are 70, 140,210 

2.An undirected graph possesses  an eulerian  circuit if  and only  if  it isconnected and its vertices are
   (A) all of even degree

An undirected graph has an eulerian circuit if and only if it is connected and each vertex has an even degree (degree is the number of edges that are adjacent to that vertex).

An undirected graph has an eulerian path if and only if it is connected and all vertices except 2 have even degree. One of those 2 vertices that have an odd degree must be the start vertex, and the other one must be the end vertex.

3. A partially ordered set is said to be a lattice  if  every  two  elements  in  the set have
   (C) Both A and B

4. The minimum number of edges in a connected graph with ‘n’  vertices is equal to
    (D) n-1

5. Consider  the  problem  of  connecting 19  lamps  to  a  single electric  outlet by  using  extension  cords  each of which has four  outlets. The  number of extension cords required is
  (C) 6


 Here m-ary tree equation is coonsidered i.e. (m-1)i = t - 1
 therefore, (4-1) i = 19 - 1 = 6

6. The  decimal  number  equivalent  of (4057.06)8 is
   (D) 2095.0937



7. AB + (A+ B) bar is equivalent to


(A) A XOR B
(B) A XNOR B
(C) (A XOR B) XNOR A
(D) (A XNOR B) XOR A


Answer: (B)






8. An astable multivibrator has
  (C) No stable states

9. 12-bit 2’s complement of –73.75 is
  (C)

10. Encoding of data bits 0011 into 7-bit even Parity Hamming Code is
  (A)

11. How  many  of  the  following declarations are correct ?


int z = 7.0;
double void = 0.000;
short array [2] = {0, 1, 2};
char c = “\n”;


Answer .. (C)  cant assign char in double quotes and keword cant be a variable name.


12. The value of the following expression (13 / 4 * 3) % 5 + 1 is


(A) 5.75
(B) 2.95
(C) 1.4875
(D) 5

Answer : (D)

13. Which one of the following will set the value of y to 5 if x has the value
3, but not otherwise ?

(A) if (x = 3) y = 5
(B) if x = = 3 (y = 5)
(C) if (x = = 3); y = 5
(D) if (x = = 3) y = 5

Answer: (D)

14. Which one of the following sentences is true ?

(A) The body of a while loop is executed at least once.
(B) The body of a do … while loop is executed at least once.
(C) The body of a do … while loop is executed zero or more times.
(D) A for loop can never be used in place of a while loop.

Answer: B.


15. “Black” refers in the “Black-box” testing means

(A) Characters of the movie “Black”
(B) I – O is hidden
(C) Design is hidden
(D) Users are hidden

Answer: C

16. In generalisation, the differences between members of an entity is
(A) maximized
(B) minimized
(C) both (A) & (B)
(D) None of these

Answer : B


Specialization: Process of maximizing differences between members of an entity by identifying their distinguishing characters.


Generalization: Process of minimizing differences between members of an entity by identifying their common characters.


17. The dependency preservation decomposition is a property to
decompose database schema D, in which each functional dependency
X --> Y specified in F,

(A) appeared directly in one of the relation schemas Ri in the decomposed D.
(B) could be inferred from dependencies that appear in some Ri.
(C) both (A) and (B)
(D) None of these

Answer: (C)

18. Which of the following is an optimistic concurrency control method ?

(A) Validation based
(B) Time stamp ordering
(C) Lock-based
(D) None of these

Answer: (A)

19. Optical storage is a

(A) high-speed direct access storage device.
(B) low-speed direct access storage device.
(C) medium-speed direct access storage device.
(D) high-speed sequential access storage device.

Answer: (C)

20. Which of the following is the process by which a user’s access to
physical data in the application is limited, based on his privileges ?

(A) Authorization
(B) Authentication
(C) Access Control
(D) All of these

Answer: C


21. What is the maximum number of nodes in a B-tree of order 10 of
depth 3 (root at depth 0) ?

(A) 111
(B) 999
(C) 9999
(D) None of the above

Answer: D

correct answer is 1111

22. A binary tree with 27 nodes has _______ null branches.

(A) 54
(B) 27
(C) 26
(D) None of the above

Answer: D
Correct answer is 28

23. The time complexity to build a heap
of n elements is
(A) 0(1)
(B) 0(lgn)
(C) 0(n)
(D) 0(nlgn)

Answer: D

24. Linear probing suffers from a problem known as

(A) Secondary clustering
(B) Primary clustering
(C) Both (A) and (B)
(D) None of these

Answer: B


25. Which of the following can be the sequence of nodes examined in
binary search tree while searching for key 88 ?

(A) 90, 40, 65, 50, 88
(B) 90, 110, 80, 85, 88
(C) 190, 60, 90, 85, 88
(D) 65, 140, 80, 70, 88

Answer: C

26. Frequency shift keying is used mostly in

(A) Radio transmission
(B) Telegraphy
(C) Telephone
(D) None of the above

Answer: C

27. The baud rate is

(A) always equal to the bit transfer rate
(B) equal to twice the bandwidth of an ideal channel
(C) not equal to the signalling rate
(D) equal to half of the bandwidth of an ideal channel

Answer:

28. How much bandwidth is there in 1 micron of spectrum at a wavelength of 1 micron ?

(A) 300 MHz
(B) 3 GHz
(C) 300 THz
(D) 30 KHz

Answer: C


29. Which of the following file transfer protocols use TCP and establishes
two virtual circuits between the local and remote server ?

(A) FTP
(B) TFTP
(C) TELNET
(D) NFS


30. The threshold effect in demodulator is

(A) exhibited by all demodulator, when the input signal to noise ratio is low.
(B) the rapid fall on output signal to noise ratio when the input signal to noise ratio fall below
a particular value.
(C) the property exhibited by all A.M. suppressed carrier coherent demodulator.
(D) the property exhibited by correlation receiver.


31. Object code is the output of ______.

(A) Operating System
(B) Compiler or Assembler
(C) only Assembler
(D) only Compiler


32. ‘Macro’ in an assembly level program is _______.

(A) sub program
(B) a complete program
(C) a hardware portion
(D) relative coding


33.Grammar of the programming is checked at ________ phase of compiler.

(A) semantic analysis
(B) code generation
(C) syntax analysis
(D) code optimization


34. The register or main memory location which contains the effective
address of the operand is known as

(A) pointer
(B) special location
(C) indexed register
(D) None of the above


35. Macro-processors are ______.

(A) Hardware
(B) Compiler
(C) Registers
(D) None of the above

36. The dynamic allocation of storage areas with VSAM files is accomplished by

(A) Hashing
(B) Control splits
(C) Overflow areas
(D) Relative recoding

37. Which of the following command the file names in multiple columns ?

(A) IS – X
(B) IS
(C) IS – 1
(D) IS – f – X

38. WINDOWS is a _________ operating.

(A) Real time
(B) Multi-user
(C) Preemptive
(D) Non-preemptive

39. Page making process from main memory to disk is called

(A) Interruption
(B) Termination
(C) Swapping
(D) None of the above

40. A Dead-lock in an Operating System is

(A) Desirable process
(B) Undesirable process
(C) Definite waiting process
(D) All of the above

41. Prototyping is used to

(A) test the software as an end product
(B) expand design details
(C) refine and establish requirements gathering
(D) None of the above

42. Which one of these are not software maintenance activity ?

(A) Error correction
(B) Adaptation
(C) Implementation of Enhancement
(D) Establishing scope


43. The system specification is the first deliverable in the computer system
engineering process which does not include
(A) Functional Description
(B) Cost
(C) Schedule
(D) Technical Analysis


44. The COCOMO model was introduced in the book title
“Software Engineering Economics” authored by

(A) Abraham Silberschatz
(B) Barry Boehm
(C) C.J. Date
(D) D.E. Knuth


45. The Warnier diagram enables analyst

(A) to represent information hierarchy in a compact manner
(B) to further identify requirement
(C) to estimate the total cost involved
(D) None of the above


46. A data mart may contain

(A) summarised data
(B) de-normalized data
(C) aggregate departmental data
(D) All of the above


47. Data mining is

(A) the process of extracting valid, previously unknown, comprehensible and actionable
information from large databases and using it to make crucial business decisions.
(B) a tool that allows end users direct access and manipulation of data from within
datawarehousing environment without the intervention of customised programming activity.
(C) a tool that helps end users extract useful business information from large database.
(D) All of the above


48. E-Choupal refers to

(A) calling meeting of Surpanches electronically.
(B) conducting Panchayat meeting using latest electronic gadgets.
(C) providing window of information to villagers and farmers in NIC network.
(D) None of the above


49. The basic concepts of ethics in information society is/are
(A) Responsibility
(B) Accountability
(C) Liability
(D) All of the above


50. One of the distinguished features of super-computer over other category of computer is
(A) parallel processing
(B) highest accuracy level
(C) more speed
(D) more capacity







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