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Showing posts with label ugc net old question papers. Show all posts
Showing posts with label ugc net old question papers. Show all posts

Monday, November 30, 2015

UGC NET Computer Science Solved Paper -III June 2015

Questions along with Answers Below - Explanations are always welcome

1. For the 8 - bit word 00111001, the check bits stored with it would be 0111. Suppose when the word is read from memory, the check bits are calculated to be 1101. What is the data word that was read from memory ?
(1) 10011001 (2) 00011001 (3) 00111000 (4) 11000110

2. Consider a 32 - bit microprocessor, with a 16 - bit external data bus, driven by an 8 MHz input clock. Assume that this microprocessor has a bus cycle whose minimum duration equals four input clock cycles. What is the maximum data transfer rate for this microprocessor ?
(1) 8x106 bytes/sec (2) 4 x106 bytes/sec (3) 16x106 bytes/sec (4) 4 x109 bytes/sec

3. The RST 7 instruction in 8085 microprocessor is equivalent to :
(1) CALL 0010 H         (2) CALL 0034 H      (3) CALL 0038 H         (4) CALL 003C H

4. The equivalent hexadecimal notation for octal number 2550276 is :
(1) FADED      (2) AEOBE        (3) ADOBE         (4) ACABE

5. The CPU of a system having 1 MIPS execution rate needs 4 machine cycles on an average for executing an instruction. The fifty percent of the cycles use memory bus. A memory read/ write employs one machine cycle. For execution of the programs, the system utilizes 90 percent of the CPU time. For block data transfer, an IO device is attached to the system while CPU executes the background programs continuously. What is the maximum IO data transfer rate if programmed IO data transfer technique is used ?
(1) 500 Kbytes/sec   (2) 2.2 M bytes/sec (3) 125 Kbytes/sec    (4) 250 Kbytes/sec

6. The number of flip-flops required to design a modulo - 272 counter is :
(1) 8     (2) 9     (3) 27     (4) 11

7. Let E1 and E2 be two entities in E-R diagram with simple single valued attributes. R1 and R2 are two relationships between E1 and E2 where R1 is one - many and R2 is many - many. R1 and R2 do not have any attribute of their own. How many minimum number of tables are required to represent this situation in the Relational Model ?
(1) 4      (2) 3           (3) 2         (4) 1

8. The STUDENT information in a university stored in the relation
STUDENT (Name, SEX, Marks, DEPT_Name)
Consider the following SQL Query SELECT DEPT_Name from STUDENT where SEX S 'M' group by DEPT_Name having avg (Marks) >SELECT avg (Marks) from STUDENT. It Returns the Name of the Department for which :
(1) The Average marks of Male students is more than the average marks of students in the same Department (2) The average marks of male students is more than the average marks of students in the University
(3) The average marks of male students is more than the average marks of male students in the University
(4) The average marks of students is more than the average marks of male students in the University

9. Select the 'False' statement from the following statements about Normal Forms :
(1) Lossless preserving decomposition into 3NF is always possible
(2) Lossless preserving decomposition into BCNF is always possible
(3) Any Relation with two attributes is in BCNF
(4) BCNF is stronger than 3NF

10. The Relation Vendor Order (V_no, V_ord_no, V_name, Qty_sup, unit_price) is in 2NF because:
(1) Nonkey attribute V_name is dependent on V_no which is part of composite key
(2) Nonkey attribute V_name is dependent on Qty_sup
(3) Key attribute Qty_sup is dependent on primary_key unit price
(4) Key attribute V_ord_no is dependent on primary_key unit price

11. The relation schemas R1 and R2 form a Lossless join decomposition of R if and only if :
(a) R1 ∩R2 ↠(R1 - R2)
(b) R1 →R2
(c) R1 ∩R2↠(R2 - R1 )
(d) R2R1 ∩R2
Codes :
(1) (a) and (b) happens        (2) (a) and (d) happens
(3) (a) and (c) happens        (4) (b) and (c) happens

12. In the indexed scheme of blocks to a file, the maximum possible size of the file depends on :
(1) The number of blocks used for index and the size of index
(2) Size of Blocks and size of Address
(3) Size of index
(4) Size of Block

13. Give the number of principal vanishing point(s) along with their direction for the standard perspective transformation :
(1) Only one in the direction K                  (2) Two in the directions I and J
(3) Three in the directions I, J and K         (4) Only two in the directions J and K

14. Consider a triangle A(0,0), 13(1,1) and C(5,2). The triangle has to be rotated by an angle of 45° about the point P(-1, -1). What shall be the coordinates of the new triangle ?
(1) A' =  ( 1, 2 - 1 ) , B' = ( -1, 2 2 - 1 ) and C' = [3 2 - 1, 9/2  2 - 1]
(2) A' =  ( 1, 2 - 1 ) , B' = ( 2 2 - 1, -1 ) and C' = [3 2 - 1, 9/2  2 - 1]
(3) A' =  ( -1, 2 - 1 ) , B' = ( -1, 2 2 - 1 ) and C' = [3 2 - 1, 9/2  2 - 1]
(4) A' =  ( 2 - 1, -1 ), B' = ( -1, 2 2 - 1 ) and C' = [3 2 - 1, 9/2  2 - 1]

15. The process of dividing an analog signal into a string of discrete outputs, each of constant amplitude, is called:
(1) Strobing    (2) Amplification     (3) Conditioning     (4) Quantization

16. Which of the following is not a basic primitive of the Graphics Kernel System (GKS) ?
(1) POLYLINE     (2) POLYDRAW      (3) FILL AREA     (4) POLYMARKER

17. Which of the following statement(s) is/are incorrect ?
(a) Mapping the co-ordinates of the points and lines that form the picture into the appropriate co-ordinates on the device or workstation is known as viewing transformation.
(b) The right-handed cartesian co-ordinates system in whose co-ordinates we describe the picture is known as world co-ordinate system.
(c) The co-ordinate system that corresponds to the device or workstation where the image is to be displayed is known as physical device co-ordinate system.
(d) Left - handed co-ordinate system in which the display area of the virtual display device corresponds to the unit (Ixl) square whose lower left-hand corner is at the origin of the co-ordinate system, is known as normalized device co-ordinate system.
Codes :
(1) (a) only            (2) (a) and (b)            (3) (c) only          (4) (d) only

18. Match the following :
      List-I                                        List-II
(a) Flood Gun                   (i)   An electron gun designed to flood the entire screen with electrons.  
(b) Collector                     (ii)   Partly energised by flooding gun, stores the charge generated by the writing gun.
(c) Ground                        (iii)  Used to discharge the collector.
(d) Phosphorus grains        (iv) Used in memory - tube display and similar to those used in standard CRT.
(e) Writing Gun System      (v) Used in memory - tube display and basically the same as the electron gun used in a conventional CRT.
Codes :
     (a) (b) (c) (d) (e)
(1) (i) (ii) (iii) (iv) (v)
(2) (ii) (iii) (i) (iv) (v)
(3) (iii) (i) (ii) (v) (iv)
(4) (iv) (v) (i) (ii) (iii)

 19. Minimal deterministic finite automaton for the language L = {0n | n ≥ 0 , n ≠ 4} will have :
(1) 1 final state among 5 states         (2) 4 final states among 5 states
(3) 1 final state among 6 states         (4) 5 final states among 6 states

20. The regular expression corresponding to the language L where
L = {x  {0, 1}*  | x ends with 1 and does not contain substring 00}   is :
(1) (1+01)* (10 + 01)           (2) (1+01)* 01
(3) (1+01)* (1 + 01)             (4) (10+01)*01

21. The transition function for the language L = {w|na(w) and nb(w) are both odd} is given by :
δ(q0, a) = q1         ;   δ(q0, b) = q2
δ(q1, a) = q0         ;   δ(q1, b) = q3
δ(q2, a) = q3         ;   δ(q2, b) = q0
δ(q3, a) = q2         ;   δ(q3, b) = q1
The initial and final states of the automata are :
(1) q0 and qrespectively            (2) qand qrespectively
(3) qand qrespectively            (4) qand qrespectively

22. The clausal form of the disjunctive normal form ¬ A  ¬ B  ¬ C  D is:
(1) ABC⇒D                 (2) ABCD⇒true
(3) ABCD⇒true        (4) A  B  C  D ⇒ false

23. Which of the following is false for the programming language PROLOG ?
(1) A PROLOG variable can only be assigned to a value once
(2) PROLOG is a strongly typed language
(3) The scope of a variable in PROLOG is a single clause or rule
(4) The scope of a variable in PROLOG is a single query

24. Which one of the following is true ?
(1) The resolvent of two Horn clauses is not a Horn clause
(2) The resolvent of two Horn clauses is a Horn clause
(3) If we resolve a negated goal G against a fact or rule A to get clause C then C has positive literal or non-null goal
(4) If we resolve a negated goal G against a fact or rule A to get clause C then C has positive literal or null goal

25. Which transmission technique guarantees that data packets will be received by the receiver in the same order in which they were sent by the sender ?
(1) Broadcasting               (2) Unicasting
(3) Packet switching         (4) Circuit switching

 26. Which of the following control fields in TCP header is used to specify whether the sender has no more data to transmit ?
(1) FIN            (2) RST               (3) SYN              (4) PSH

27. Which are the two modes of IP security ?
(1) Transport and certificate                    (2) Transport and tunnel
(3) Certificate and tunnel                         (4) Preshared and transport

28. A message "COMPUTERNETWORK" encrypted (ignore quotes) using columnar transposition cipher with a key "LAYER". The encrypted message is :
(1) CTTOEWMROPNRUEK                   (2) MROUEKCTTPNROEW
(3) OEWPNRCTTUEKMRO                   (4) UEKPNRMROOEWCTT

29. Suppose a digitized voice channel is made by digitizing 8 kHz bandwidth analog voice signal. It is required to sample the signal at twice the highest frequency (two samples per hertz). What is the bit rate required, if it is assumed that each sample requires 8 bits ?
(1) 32 kbps        (2) 64 kbps         (3) 128 kbps          (4) 256 kbps

30. The maximum payload of a TCP segment is :
(1) 65,535            (2) 65,515            (3) 65,495           (4) 65,475

31. An all-pairs shortest-paths problem is efficiently solved using :
(1) Dijkstra' algorithm           (2) Bellman-Ford algorithm
(3) Kruskal algorithm            (4) Floyd-Warshall algorithm

32. The travelling salesman problem can be solved in :
(1) Polynomial time using dynamic programming algorithm
(2) Polynomial time using branch-and-bound algorithm
(3) Exponential time using dynamic programming algorithm or branch-and-bound algorithm
(4) Polynomial time using backtracking algorithm

33. Which of the following is asymptotically smaller ?
(1) lg(lg*n)       (2) lg*(lgn)        (3) lg(n!)         (4) lg*(n!)

34. Consider a hash table of size m = 100 and the hash function h(k) = floor (m(kA mod 1)) for  A = ( 2  -1) / 2 = 0.618033. Compute the location to which the key k = 123456 is placed in hash table.
(1) 77          (2) 82           (3) 88           (4) 89

35. Let ƒ(n) and g (n) be asymptotically non-negative functions. Which of the following is correct ?
(1) θ(ƒ(n)*g(n)) = min(ƒ(n), g(n))           (2) θ(ƒ(n)*g(n)) = max(ƒ(n), g(n))
(3) θ(ƒ(n)+g(n)) = min(ƒ(n), g(n))           (4) θ(ƒ(n)+g(n)) = max(ƒ(n), g(n))

36. The number of nodes of height h in any n - element heap is ________ .
(1) h         (2) zh             (3) ceil (n /zh )             (4) ceil (n/zh+1)

37. In Java, when we implement an interface method, it must be declared as :
(1) Private        (2) Protected          (3) Public        (4) Friend

38. The Servlet Response interface enables a servlet to formulate a response for a client using the method . (1) void log(Exceptione, Strings)              (2) void destroy ()
(3) int get ServerPort()                            (4) void set ContextType(String type)

 39. Which one of the following is correct ?
(1) Java applets can not be written in any programming language
(2) An applet is not a small program
(3) An applet can be run on its own
(4) Applets are embedded in another applications

40. In XML we can specify the frequency of an element by using the symbols :
(1) + * !    (2) # * !          (3) + * ?    (4) - * ?

41. In XML, DOCTYPE declaration specifies to include a reference to file.
(1) Document type Definition          (2) Document type declaration
(3) Document transfer definition      (4) Document type language

42. Module design is used to maximize cohesion and minimize coupling. Which of the following is the key to implement this rule?
(1) Inheritance (2) Polymorphism (3) Encapsulation (4) Abstraction

43. Verification:
(1) refers to the set of activities that ensure that software correctly implements a specific function
(2) gives answer to the question - Are we building the product right ?
(3) requires execution of software
(4) both (1) and (2)

 44. Which design matric is used to measure the compactness of the program in terms of lines of code?
(1) Consistency          (2) Conciseness          (3) Efficiency     (4) Accuracy

45. Requirements prioritisation and negotiation belongs to :
(1) Requirements validation              (2) Requirements elicitation
(3) Feasibility study                         (4) Requirements reviews

46. Adaptive maintenance is a maintenance which .
(1) correct errors that were not discovered till testing phase.
(2) is carried out to port the existing software to a new environment.
(3) improves the system performance.
(4) both (2) and (3)

 47. A Design concept Refinement is a:
(1) Top-down approach
(2) Complementary of Abstraction concept
(3) Process of elaboration
(4) All of the above

48. A software design is highly modular if :
(1) cohesion is functional and coupling is data type.
(2) cohesion is coincidental and coupling is data type.
(3) cohesion is sequential and coupling is content type.
(4) cohesion is functional and coupling is stamp type.

 49. Match the following for operating system techniques with the most appropriate advantage :
           List-I                                 List-II            
(a) Spooling                           (i)  Allows several jobs in memory to improve CPU utilization
(b) Multiprogramming            (ii) Access to shared resources among geographically dispersed computers in a transparent way
(c) Time sharing                    (iii) Overlapping I/O and computations
(d) Distributed computing      (iv)  Allows many users to share a computer simultaneously by switching processor frequently
Codes :
    (a) (b) (c) (d)
(1) (iii) (i) (ii) (iv)
(2) (iii) (i) (iv) (ii)
(3) (iv) (iii) (ii) (i)
(4) (ii) (iii) (iv) (i)

50. Which of the following statements is not true for Multi Level Feedback Queue processor scheduling algorithm ?
(1) Queues have different priorities
(2) Each queue may have different scheduling algorithm
(3) Processes are permanently assigned to a queue
(4) This algorithm can be configured to match a specific system under design

51. What is the most appropriate function of Memory Management Unit (MMU) ?
(1) It is an associative memory to store TLB
(2) It is a technique of supporting multiprogramming by creating dynamic partitions
(3) It is a chip to map virtual address to physical address
(4) It is an algorithm to allocate and deallocate main memory to a process

52. Dining Philosopher's problem is a :
(1) Producer - consumer problem        (2)  Classical IPC problem
(3) Starvation problem                         (4) Synchronization primitive

 53. In_________ allocation method for disk block allocation in a file system, insertion and deletion of blocks in a file is easy.
(1) Index    (2) Linked     (3) Contiguous    (4) Bit Map

54. A unix file may be of the type:
(1) Regular file                  (2) Directory file
(3) Device file                   (4) Any one of the above

55. Match the following :
 List-I                                           List - II
(a) Intelligence                         (i) Contextual, tacit, transfer needs learning
(b) Knowledge                        (ii) Scattered facts, easily transferable
(c) Information                        (iii) Judgemental 
(d) Data                                  (iv) Codifiable, endorsed with relevance and purpose
Codes :
     (a) (b) (c) (d)
(1) (iii) (ii) (iv) (i)
(2) (iii) (i) (iv) (ii)
(3) (i) (ii) (iii) (iv)
(4) (i) (iii) (iv) (ii)

56. Match the following knowledge representation techniques with their applications :
         List-I                                  List - II
(a) Frames                               (i) Pictorial representation of objects, their attributes and relationships 
(b) Conceptual dependencies   (ii) To describe real world stereotype events
(c) Associative networks         (iii) Record like structures for grouping closely related knowledge
(d) Scripts                               (iv) Structures and primitives to represent sentences
Codes :
     (a) (b) (c) (d)
(1) (iii) (iv) (i) (ii)
(2) (iii) (iv) (ii) (i)
(3) (iv) (iii) (i) (ii)
(4) (iv) (iii) (ii) (i)

57. In propositional logic P  Q is equivalent to (Where ~ denotes NOT) :
(1) ~(P Q)~(QP)       (2) (~ PQ)  (~ Q P)
(3) (P  Q)  (Q  P)      (4) ~(PQ)→ ~(QP)

58. Which of the following statements is true for Branch - and - Bound search ?
(1) Underestimates of remaining distance may cause deviation from optimal path.
(2) Overestimates can't cause right path to be overlooked.
(3) Dynamic programming principle can be used to discard redundant partial paths.
(4) All of the above

59. Match the following with respect to heuristic search techniques : 
 List-I                                                                List-II
(a) Steepest-accent Hill Climbing         (i)   Keeps track of all partial paths which can be candidate for further exploration  
(b) Branch - and - bound                    (ii)   Discover problem state(s) that satisfy a set of constraints
(c) Constraint satisfaction                    (iii)  Detects difference between current state and goal state
(d) Means-end-analysis                       (iv) Considers all moves from current state and selects best move
Codes :
     (a) (b) (c) (d)
(1) (i) (iv) (iii) (ii)
(2) (iv) (i) (ii) (iii)
(3) (i) (iv) (ii) (iii)
(4) (iv) (ii) (i) (iii)

60. Match the following for methods of MIS develpoment :
           List-I                                                        List-II
(a) Joint Application Design (JAD)        (i)  Delivers functionality in rapid iteration measured in weeks and needs frequent communication, development, testing and delivery
(b) Computer Aided Software Engg      (ii) Reusable applications generally with one specific function. It is closely linked with idea of web services and service oriented architecture.
(c) Agile development                         (iii)   Tools to automate many tasks of SDLC
(d) Component based technology       (iv)  A group based tool for collecting user requirements and creating system design. Mostly used in analysis and design stages of SDLC
Codes :
     (a) (b) (c) (d)
(1) (i) (iii) (ii) (iv)
(2) (iv) (iii) (i) (ii)
(3) (iii) (iv) (i) (ii)
(4) (iii) (i) (iv) (ii)

61. A context free grammar for L = { w | n0 (w) > n (w)} is given by :
(1) S→ 0|0S|1SS                      (2) S→ 0S|1S|0SS|1SS|0|1
(3) S→ 0|0S|1SS|S1S|SS1        (4) S→  0 S | 1 S | 0 | 1

62.    Given the following two statements :
S1 : If L1 and L2 are recursively enumerable languages over ∑, then L L2 and L L2 are also recursively enumerable.
S2 : The set of recursively enumerable languages is countable.
Which of the following is correct?
(1) S1 is correct and S2 is not correct
(2) S1 is not correct and S2 is correct
(3) Both S1 and S2 are not correct
(4) Both S1 and S2 are correct

63 Given the following grammars:
G1:    S→ AB|aaB
        A  aA | 
        B→ bB| 

G2:   S→ A | B
        A→ a A b|ab
        B→ a b B| 
Which of the following is correct?
(1) G1 is ambiguous and G2 is unambiguous grammars
(2) G1 is unambiguous and G2 is ambiguous grammars
(3) both G1 and G2 are ambiguous grammars
(4) both G1 and G2 are unambiguous grammars

64 Given the symbols A, B, C, D, E, F, G and H with the probabilities 1/30, 1/30, 1/30, 2/30, 3/30, 5/30, 5/30 and 12/30 respectively. The average Huffman code size in bits 30 30 30 30 30 30 30 30 per symbol is:
(1)67/30  (2) 70/34   (3)76/30  (4)78/30

65. The redundancy in images stems from :
(1) pixel decorrelation            (2) pixel correlation
(3) pixel quantization              (4) image size

 66. In a binary Hamming Code the number of check digits is r then number of message digits is equal to: 
(1) 2r - 1     (2) 2r - r -1     (3) 2r - r +1      (4) 2r  +r +1

 67. In the Hungarian method for solving assignment problem, an optimal assignment requires that the maximum number of lines that can be drawn through squares with zero opportunity cost be equal to the number of:
(1) rows or columns             (2) rows + columns
(3) rows + columns - 1        (4) rows + columns +1

 68. Consider the following transportation problem :
                                                                    Warehouse
                       Factory
                           
W1W2W3Supply
F1162012200
F214818160
F326241690
Demand180120150
The initial basic feasible solution of the above transportation problem using Vogel's Approximation Method (VAM) is given below :

                                                                    Warehouse
                       Factory
                           
W1W2W3Supply
F116 (140)    2012 (60)200
F214 (40)8 (120)   18160
F3262416 (90)90
Demand180120150
The solution of the above problem :
(1) is degenerate solution             (2) is optimum solution
(3) needs to improve                   (4) is infeasible solution

 69. Given the following statements with respect to linear programming problem :
S1 : The dual of the dual linear programming problem is again the primal problem
S2 : If either the primal or the dual problem has an unbounded objective function value, the other problem has no feasible solution.
S3 : If either the primal or dual problem has a finite optimal solution, the other one also possesses the same, and the optimal value of the objective functions of the two problems are equal.
Which of the following is true?
(1) S1 and S2         (2) S1 and S3
(3) S2 and S3         (4) S1, S2 and S3

70. Consider the two class classification task that consists of the following points :
Class C1 :[1     1.5]       [1   -1.5]
Class C2 :[-2    2.5]       [-2  -2.5]
The decision boundary between the two classes using single perceptron is given by :
(1) x1 + x2 + 1.5 = 0       (2) x1 + x2 - 1.5 = 0
(3) x1 + 1.5 = 0               (4)x1 -1.5 = 0

71. Let A and B be two fuzzy integers defined as :
A = {(1, 0.3), (2, 0.6), (3, 1), (4, 0.7), (5, 0.2)}
B = {(10, 0.5), (11, 1), (12, 0.5)}


(1) {(11, 0.8), (13, 1), (15,1)}
(2) {(11, 0.3), (12, 0.5), (13, 1), (14, 1), (15, 1), (16, 0.5), (17, 0.2)}
(3) {(11, 0.3), (12, 0.5), (13, 0.6), (14, 1), (15, 1), (16, 0.5), (17, 0.2)}
(4) {(11, 0.3), (12, 0.5), (13, 0.6), (14, 1), (15, 0.7), (16, 0.5), (17, 0.2)}

72. Suppose the function y and a fuzzy integer number around -4 for x are given as y=(x - 3)2 + 2.
Around -4 ={(2, 0.3), (3, 0.6), (4, 1), (5, 0.6), (6, 0.3)} respectively. Then f (Around -4) is given by:
(1) {(2, 0.6), (3, 0.3), (6, 1), (11, 0.3)}
(2) {(2, 0.6), (3, 1), (6, 1), (11, 0.3)}
(3) {(2, 0.6), (3, 1), (6, 0.6), (11, 0.3)}
(4) {(2, 0.6), (3, 0.3), (6, 0.6), (11, 0.3)}

 73. Match the following for unix system calls :
List-I                  List - II
(a) exec        (i)  Creates a new process
(b) brk         (ii)  Invokes another program overlaying memory space with a copy of an executable file
(c) wait        (iii) To increase or decrease the size of data region
(d) fork       (iv)  A process synchronizes with termination of child process
Codes :
     (a) (b) (c) (d)
(1) (ii) (iii) (iv) (i)
(2) (iii) (ii) (vi) (i)
(3) (iv) (iii) (ii) (i)
(4) (iv) (iii) (i) (ii)

 74. WOW32 is a:
(1) Win 32 API library for creating processes and threads.
(2) Special kind of file system to the NT name space.
(3) Kernel - mode objects accessible through Win 32 API
(4) Special execution environment used to run 16 bit Windows applications on 32 - bit machines.

75. The unix command :
$vi   filel file2
(1) Edits filel and stores the contents of filel in file2
(2) Both files i.e. filel and file2 can be edited using 'ex' command to travel between the files
(3) Both files can be edited using 'mv' command to move between the files
(4) Edits filel first, saves it and then edits file2

Tuesday, December 30, 2014

UGC NET Computer Science Solved Paper -III Dec 2014

Questions along with Answers Below - Explanations are always welcome

1. A hierarchical memory system that uses cache memory has cache access time of 50 nano seconds, main memory access time of 300 nano seconds, 75% of memory requests are for read, hit ratio of 0.8 for read access and the write-through scheme is used. What will be the average access time of the system both for read and write requests ?
(A) 157.5 n.sec.         (B) 110 n.sec.
(C) 75 n.sec.              (D) 82.5 n.sec.

2. For switching from a CPU user mode to the supervisor mode following type of interrupt is most appropriate
(A) Internal interrupts          (B) External interrupts
(C) Software interrupts        (D) None of the above

3. In a dot matrix printer the time to print a character is 6 m.sec., time to space in between characters is 2 m.sec., and the number of characters in a line are 200. The printing speed of the dot matrix printer in characters per second and the time to print a character line are given by which of the following options ?
(A) 125 chars/second and 0.8 seconds
(B) 250 chars/second and 0.6 seconds
(C) 166 chars/second and 0.8 seconds
(D) 250 chars/second and 0.4 seconds
NOTE: All the above options are wrong.  The correct answer should be 125 chars/second and 1.6 seconds
(Question paper setters are always lethargic, this is not the first time, every time they repeat. incapable fellows. only the aspirants are put into trouble)


4. Match the following 8085 instructions with the flags :
       List – I                   List – II
a. XCHG                     i. only carry flag is affected.
b. SUB                        ii. no flags are affected.
c. STC                        iii. all flags other than carry flag are affected.
d. DCR                       iv. all flags are affected.
Codes :
       a  b c  d
(A) iv  i   iii  ii
(B) iii   ii  i  iv
(C) ii   iii  i  iv
(D) ii   iv  i  iii

5. How many times will the following loop be executed ?
           LXI B, 0007 H
LOP : DCX B
          MOV A, B
          ORA C
          JNZ LOP
(A) 05          (B) 07
(C) 09          (D) 00

6. Specify the contents of the accumulator and the status of the S, Z and CY flags when 8085 microprocessor performs addition of 87 H and 79 H.
(A) 11, 1, 1, 1             (B) 10, 0, 1, 0
(C) 01, 1, 0, 0             (D) 00, 0, 1, 1

7. Location transparency allows :
I. Users to treat the data as if it is done at one location.
II. Programmers to treat the data as if it is at one location.
III. Managers to treat the data as if it is at one location.
Which one of the following is correct ?
(A) I, II and III              (B) I and II only
(C) II and III only          (D) II only

8. Which of the following is correct ?
I. Two phase locking is an optimistic protocol.
II. Two phase locking is pessimistic protocol
III. Time stamping is an optimistic protocol.
IV. Time stamping is pessimistic protocol.
(A) I and III            (B) II and IV
(C) I and IV            (D) II and III

9. __________ rules used to limit the volume of log information that has to be handled and processed in the event of system failure involving the loss of volatile information.
(A) Write-ahead log           (B) Check-pointing
(C) Log buffer                    (D) Thomas

10. Let R = ABCDE is a relational scheme with functional dependency set F = {A → B, B → C, AC → D}. The attribute closures of A and E are
(A) ABCD, φ           (B) ABCD, E
(C) Φ, φ                  (D) ABC, E

11. Consider the following statements :
I. Re-construction operation used in mixed fragmentation satisfies commutative rule.
II. Re-construction operation used in vertical fragmentation satisfies commutative rule
Which of the following is correct ?
(A) I                                (B) II
(C) Both are correct        (D) None of the statements are correct.

12. Which of the following is false ?
(A) Every binary relation is never be in BCNF.
(B) Every BCNF relation is in 3NF.
(C) 1 NF, 2 NF, 3 NF and BCNF are based on functional dependencies.
(D) Multivalued Dependency (MVD) is a special case of Join Dependency (JD).

13. Which of the following categories of languages do not refer to animation languages ?
(A) Graphical languages         (B) General-purpose languages
(C) Linear-list notations          (D) None of the above

14. Match the following :
     List – I                                      List – II
a. Tablet, Joystick                     i. Continuous devices
b. Light Pen, Touch Screen       ii. Direct devices
c. Locator, Keyboard               iii. Logical devices
d. Data Globe, Sonic Pen         iv. 3D interaction devices
Codes :
      a  b  c  d
(A) ii   i  iv  iii
(B) i   iv  iii  ii
(C) i   ii   iii  iv
(D) iv  iii  ii   i

15. A technique used to approximate halftones without reducing spatial resolution is known as _________.
(A) Halftoning          (B) Dithering
(C) Error diffusion    (D) None of the above

16. Consider a triangle represented by A(0, 0), B(1, 1), C(5, 2). The triangle is rotated by 45 degrees about a point P(–1, –1). The co-ordinates of the new triangle obtained after rotation shall be _______
(A) A' ( –1, 2 –1),  B'( –1, 2√2 –1), C' (3/2 2 –1, 9/2 2 –1)
(B) A' ( 2 –1,-1),  B'( 2√2 –1, –1) , C' (3/2 2 –1, 9/2 2 –1)
(C) A' ( –1, 2 –1),  B'( 2√2 –1,–1), C' (3/2 2 –1, 9/2 2 –1)
(D) A' ( –1, 2 –1),  B'( 2√2 –1,–1), C' (9/2 2 –1, 3/2 2 –1)

17. In Cyrus-Beck algorithm for line clipping the value of t parameter is computed by the relation :
(Here P1 and P2 are the two end points of the line, f is a point on the boundary, ni  is inner normal)
(A) (P1 – fi) .ni /  (P2 – P1) . ni             (B) (fi – P1) . ni / (P2 – P1) . ni
(C) (P2 – fi) . ni / (P1 – P2) . ni             (D) (fi – P2) . ni / (P1 – P2) . ni

18. Match the following :
a. Cavalier Projection                 i. The direction of projection is chosen so that there is no foreshortening of
                                                     lines perpendicular to the xy plane.
b. Cabinet Projection                 ii. The direction of projection is chosen so that lines perpendicular to the xy
                                                     planes are foreshortened by half their lengths.
c. Isometric Projection               iii. The direction of projection makes equal angles with all of the principal
                                                      axis.
d. Orthographic Projection         iv. Projections are characterized by the fact that the direction of projection 
                                                      is perpendicular to the view plane.
Codes :
      a  b   c  d
(A) i  iii   iv   ii
(B) ii  iii   i   iv
(C) iv  ii  iii   i
(D) i   ii  iii   iv

19. Consider the following statements S1, S2 and S3 :
S1 : In call-by-value, anything that is passed into a function call is unchanged in the caller’s scope when the function returns.
S2 : In call-by-reference, a function receives implicit reference to a variable used as argument.
S3 : In call-by-reference, caller is unable to see the modified variable used as argument.
(A) S3 and S2 are true. (B) S3 and S1 are true.
(C) S2 and S1 are true. (D) S1, S2, S3 are true.

20. How many tokens will be generated by the scanner for the following statement ?
x = x * (a + b) – 5;
(A) 12     (B) 11
(C) 10     (D) 07

21. Which of the following statements is not true ?
(A) MPI_Isend and MPI_Irecv are non-blocking message passing routines of MPI.
(B) MPI_Issend and MPI_Ibsend are non-blocking message passing routines of MPI.
(C) MPI_Send and MPI_Recv are non-blocking message passing routines of MPI.
(D) MPI_Ssend and MPI_Bsend are blocking message passing routines of MPI.

22. The pushdown automation M = ({q0, q1, q2}, {a, b}, {0, 1}, δ, q0, 0, {q0}) with
δ(q0, a, 0) = {(q1, 10)}
δ(q1, a, 1) = {(q1, 11)}
δ(q1, b, 1) = {(q2, λ)}
δ(q2, b, 1) = {(q2, λ)}
δ(q2, λ, 0) = {(q0, λ)}
Accepts the language
(A) L = {a n b m) | n, m ≥ 0}     (B) L = {a n bn) | n ≥ 0}
(C) L = {a n b m) | n, m > 0}     (D) L = {a n bn) | n > 0}

23. Given two languages :
L1 = {(ab) n a k  | n > k, k ≥  0}
L2 = {a n b m) | n ≠ m}
Using pumping lemma for regular language, it can be shown that
(A) L1 is regular and L2 is not regular.
(B) L1 is not regular and L2 is regular.
(C) L1 is regular and L2 is regular.
(D) L1 is not regular and L2 is not regular.

24. Regular expression for the complement of language L = {a n b m  | n  4, m 3} is
(A) (a + b)* ba(a + b)*
(B) a* bbbbb*
(C) (λ + a + aa + aaa)b* + (a + b)* ba(a + b)*
(D) None of the above

25. For n devices in a network, ________ number of duplex-mode links are required for a mesh topology.
(A) n(n + 1)              (B) n (n – 1)
(C) n(n + 1)/2           (D) n(n – 1)/2

26. How many characters per second (7 bits + 1 parity) can be transmitted over a 3200 bps line if the transfer is asynchronous ? (Assuming 1 start bit and 1 stop bit)
(A) 300         (B) 320
(C) 360         (D) 400

27. Which of the following is not a field in TCP header ?
(A) Sequence number    (B) Fragment offset
(C) Checksum               (D) Window size

28. What is the propagation time if the distance between the two points is 48,000 ? Assume the propagation speed to be 2.4 × 108 metre/second in cable.
(A) 0.5 ms        (B) 20 ms
(C) 50 ms         (D) 200 ms

29. __________ is a bit-oriented protocol for communication over point-to-point and multipoint links.
(A) Stop-and-wait         (B) HDLC
(C) Sliding window        (D) Go-back-N

30. Which one of the following is true for asymmetric-key cryptography ?
(A) Private key is kept by the receiver and public key is announced to the public.
(B) Public key is kept by the receiver and private key is announced to the public.
(C) Both private key and public key are kept by the receiver.
(D) Both private key and public key are announced to the public.

31. Any decision tree that sorts n elements has height
(A) Ω(n)                 (B)  Ω(lgn)
(C)  Ω(nlgn)            (D)  Ω(n2)

32. Match the following :
            List – I                               List – II
a. Bucket sort                             i. O(n3lgn)
b. Matrix chain multiplication       ii. O(n3)
c. Huffman codes                       iii. O(nlgn)
d. All pairs shortest paths           iv. O(n)
Codes :
      a  b c  d
(A) iv  ii  i  iii
(B) ii  iv  i  iii
(C) iv  ii  iii  i
(D) iii  ii  iv  i

33. We can show that the clique problem is NP-hard by proving that
(A) CLIQUE   P 3-CNF_SAT
(B) CLIQUE P VERTEX_COVER
(C) CLIQUE P SUBSET_SUM
(D) None of the above

34. Dijkstra algorithm, which solves the single-source shortest--paths problem, is a _________, and the Floyd-Warshall algorithm, which finds shortest paths between all pairs of vertices, is a _________
(A) Greedy algorithm, Divide-conquer algorithm
(B) Divide-conquer algorithm, Greedy algorithm
(C) Greedy algorithm, Dynamic programming algorithm
(D) Dynamic programming algorithm, Greedy algorithm

35. Consider the problem of a chain <A1, A2, A3> of three matrices. Suppose that the dimensions of the matrices are 10 × 100, 100 × 5 and 5 × 50 respectively. There are two different ways of parenthesization : (i) ((A1 A2)A3) and (ii) (A1(A2 A3)). Computing the product according to the first parenthesization is ________ times faster in comparison to the second parenthesization.
(A) 5          (B) 10
(C) 20        (D) 100

36. Suppose that we have numbers between 1 and 1000 in a binary search tree and we want to search for the number 365. Which of the following sequences could not be the sequence of nodes examined ?
(A) 4, 254, 403, 400, 332, 346, 399, 365
(B) 926, 222, 913, 246, 900, 260, 364, 365
(C) 927, 204,913, 242, 914, 247, 365
(D) 4, 401, 389, 221, 268, 384, 383, 280, 365

37. Which methods are utilized to control the access to an object in multi-threaded programming ?
(A) Asynchronized methods        (B) Synchronized methods
(C) Serialized methods                (D) None of the above

38. How to express that some person keeps animals as pets ?
ANSWER: (A)

39. Converting a primitive type data into its corresponding wrapper class object instance is called
(A) Boxing             (B) Wrapping
(C) Instantiation     (D) Autoboxing

40. The behaviour of the document elements in XML can be defined by
(A) Using document object
(B) Registering appropriate event handlers
(C) Using element object
(D) All of the above

41. What is true about UML stereotypes ?
(A) Stereotype is used for extending the UML language.
(B) Stereotyped class must be abstract
(C) The stereotype indicates that the UML element cannot be changed
(D) UML profiles can be stereotyped for backward compatibility

42. Which method is called first by an applet program ?
(A) start( )        (B) run( )
(C) init( )          (D) begin( )

43. Which one of the following is not a source code metric ?
(A) Halstead metric (B) Function point metric
(C) Complexity metric (D) Length metric

44. To compute function points (FP), the following relationship is used FP = Count – total × (0.65 + 0.01 × Σ(Fi)) where Fi (i = 1 to n) are value adjustment factors (VAF) based on n questions. The value of n is
(A) 12    (B) 14
(C) 16    (D) 18

45. Assume that the software team defines a project risk with 80% probability of occurrence of risk in the following manner : Only 70 percent of the software components scheduled for reuse will be integrated into the application and the remaining functionality will have to be custom developed. If 60 reusable components were planned with average component size as 100 LOC and software engineering cost for each LOC as $ 14, then the risk exposure would be
(A) $ 25,200       (B) $ 20,160
(C) $ 17,640       (D) $ 15,120

46. Maximum possible value of reliability is
(A) 100          (B) 10
(C) 1              (D) 0

47. ‘FAN IN’ of a component A is defined as
(A) Count of the number of components that can call, or pass control, to a component A
(B) Number of components related to component A
(C) Number of components dependent on component A
(D) None of the above

48. Temporal cohesion means
(A) Coincidental cohesion
(B) Cohesion between temporary variables
(C) Cohesion between local variables
(D) Cohesion with respect to time

49. Various storage devices used by an operating system can be arranged as follows in increasing order of accessing speed :
(A) Magnetic tapes → magnetic disks → optical disks → electronic disks → main memory → cache → registers
(B) Magnetic tapes → magnetic disks → electronic disks → optical disks → main memory → cache → registers
(C) Magnetic tapes → electronic disks → magnetic disks → optical disks → main memory → cache → registers
(D) Magnetic tapes → optical disks → magnetic disks → electronic disks → main memory → cache → registers

50. How many disk blocks are required to keep list of free disk blocks in a 16 GB hard disk with 1 kB block size using linked list of free disk blocks ? Assume that the disk block number is stored in 32 bits.
(A) 1024 blocks           (B) 16794 blocks
(C) 20000 blocks         (D) 1048576 blocks

51. Consider an imaginary disk with 40 cylinders. A request come to read a block on cylinder 11. While the seek to cylinder 11 is in progress, new requests come in for cylinders 1, 36, 16, 34, 9 and 12 in that order. The number of arm motions using shortest seek first algorithm is
(A) 111     (B) 112
(C) 60      (D) 61

52. An operating system has 13 tape drives. There are three processes P1, P2 & P3. Maximum requirement of P1 is 11 tape drives, P2 is 5 tape drives and P3 is 8 tape drives. Currently, P1 is allocated 6 tape drives, P2 is allocated 3 tape drives and P3 is allocated 2 tape drives. Which of the following sequences represent a safe state ?
(A) P2 P1 P3         (B) P2 P3 P1
(C) P1 P2 P3         (D) P1 P3 P2

53. Monitor is an Interprocess Communication (IPC) technique which can be described as
(A) It is higher level synchronization primitive and is a collection of procedures, variables, and data structures grouped together in a special package.
(B) It is a non-negative integer which apart from initialization can be acted upon by wait and signal operations.
(C) It uses two primitives, send and receive which are system calls rather than language constructs.
(D) It consists of the IPC primitives implemented as system calls to block the process when they are not allowed to enter critical region to save CPU time.

54. In a distributed computing environment, distributed shared memory is used which is
(A) Logical combination of virtual memories on the nodes.
(B) Logical combination of physical memories on the nodes.
(C) Logical combination of the secondary memories on all the nodes.
(D) All of the above

55. Equivalent logical expression for the Well Formed Formula (WFF),
~(∀x) F[x] is
(A) x(~F[x])            (B) ~(x) F[x]
(C) ∃x(~F[x])             (D) F[x]

56. An A* algorithm is a heuristic search technique which
(A) is like a depth-first search where most promising child is selected for expansion
(B) generates all successor nodes and computes an estimate of distance (cost) from start node to a goal node through each of the successors. It then chooses the successor with shortest cost.
(C) saves all path lengths (costs) from start node to all generated nodes and chooses shortest path for further expansion.
(D) none of the above

57. The resolvent of the set of clauses  (A ∨ B, ~A ∨ D, C ∨ ~B)  is
(A) A ∨ B            (B) C ∨ D
(C) A ∨ C            (D) A ∨ D

58. Match the following :
a. Script                                    i. Directed graph with labelled nodes for graphical representation of
                                                    knowledge
b. Conceptual Dependencies     ii. Knowledge about objects and events is stored in record-like structures 
                                                    consisting of slots and slot values.
c. Frames                                 iii. Primitive concepts and rules to represent natural language statements
d. Associative Network            iv. Frame like structures used to represent stereotypical patterns for
                                                    commonly occurring events in terms of actors, roles, props and scenes
Codes :
      a b   c  d
(A) iv  ii  i   iii
(B) iv  iii  ii   i
(C) ii  iii  iv   i
(D) i  iii  iv   ii

59. Match the following components of an expert system :
a. I/O interface              i. Accepts user’s queries and responds to question through I/O interface
b. Explanation module   ii. Contains facts and rules about the domain
c. Inference engine       iii. Gives the user, the ability to follow inferencing steps at any time during consultation
d. Knowledge base      iv. Permits the user to communicate with the system in a natural way
Codes :
      a  b  c   d
(A) i  iii   iv  ii
(B) iv  iii  i   ii
(C) i   iii  ii   iv
(D) iv  i   iii  ii

60. A computer based information system is needed :
I. as it is difficult for administrative staff to process data.
II. due to rapid growth of information and communication technology.
III. due to growing size of organizations which need to process large volume of data.
IV. as timely and accurate decisions are to be taken.
Which of the above statement(s) is/are true ?
(A) I and II
(B) III and IV
(C) II and III
(D) II and IV

61. Given the recursively enumerable language (LRE), the context sensitive language (LCS), the recursive language (LREC), the context free language (LCF) and deterministic context free language (LDCF). The relationship between these families is given by
(A) LCF ⊆ LDCF ⊆ LCS ⊆ LRE ⊆ LREC
(B) LCF ⊆ LDCF ⊆ LCS ⊆ LREC ⊆ LRE
(C) LDCF ⊆ LCF ⊆ LCS ⊆ LRE ⊆ LREC
(D) LDCF ⊆ LCF ⊆ LCS ⊆ LREC ⊆ LRE

62. Match the following :
              List – I                            List – II
a. Context free grammar          i. Linear bounded automaton
b. Regular grammar                 ii. Pushdown automaton
c. Context sensitive grammar   iii. Turing machine
d. Unrestricted grammar          iv. Deterministic finite automaton
Codes :
       a  b  c  d
(A) ii  iv  iii   i
(B) ii  iv   i   iii
(C) iv  i   ii   iii
(D) i   iv  iii   ii

63. According to pumping lemma for context free languages :
Let L be an infinite context free language, then there exists some positive integer m such that any w ∈| L with | w | m can be decomposed as w = u v x y z
(A) with | vxy | ≤ m such that uv i xy i z ∈ L for all i = 0, 1, 2
(B) with | vxy | ≤ m, and | vy | 1, such that uv i xy i z ∈ L for all i = 0, 1, 2, …….
(C) with | vxy | m, and | vy | ≤ 1, such that uv i xy i z ∈ L for all i = 0, 1, 2, …….
(D) with | vxy | m, and | vy | 1, such that uv i xy i z ∈ L for all i = 0, 1, 2, …….

64. Given two spatial masks
The Laplacian of an image at all points (x, y) can be implemented by convolving the image with spatial mask. Which of the following can be used as the spatial mask ?
(A) only S1                    (B) only S2
(C) Both S1 and S2       (D) None of these

65. Given a simple image of size 10 × 10 whose histogram models the symbol probabilities
and is given by
           p1    p2    p3    p4
            a      b      c      d
The first order estimate of image entropy is maximum when
(A) a = 0, b = 0, c = 0, d = 1         (B) a =1/2, b =1/2 , c = 0, d = 0
(C) a =1/3, b =1/3, c =1/3, d = 0   (D) a =1/4, b =1/4, c =1/4, d =1/4

66. A Butterworth lowpass filter of order n, with a cutoff frequency at distance D0 from the origin, has the transfer function H(u, v) given by
ANSWER: (A)

67. If an artificial variable is present in the ‘basic variable’ column of optimal simplex table, then the solution is
(A) Optimum           (B) Infeasible
(C) Unbounded       (D) Degenerate

68. The occurrence of degeneracy while solving a transportation problem means that
(A) total supply equals total demand
(B) total supply does not equal total demand
(C) the solution so obtained is not feasible
(D) none of these

69. Five men are available to do five different jobs. From past records, the time (in hours) that
each man takes to do each job is known and is given in the following table :
Find out the minimum time required to complete all the jobs.
(A) 5        (B) 11
(C) 13      (D) 15

70. Consider the following statements about a perception :
I. Feature detector can be any function of the input parameters.
II. Learning procedure only adjusts the connection weights to the output layer.
Identify the correct statement out of the following :
(A) I is false and II is false.        (B) I is true and II is false.
(C) I is false and II is true.         (D) I is true and II is true.

71. A _________ point of a fuzzy set A is a point x ∈ X at which μA(x) = 0.5
(A) core               (B) support
(C) crossover       (D) α-cut

72. Match the following learning modes w.r.t. characteristics of available information for learning :
a. Supervised            i.  Instructive information on desired responses, explicitly specified by a teacher.
b. Recording             ii. A priori design information for memory storing
c. Reinforcement      iii. Partial information about desired responses, or only “right” or “wrong” evaluative 
                                    information
d. Unsupervised        iv. No information about desired responses
Codes :
     a  b  c  d
(A) i  ii  iii  iv
(B) i  iii  ii  iv
(C) ii  iv  iii  i
(D) ii  iii  iv  i

73. Which of the following versions of Windows O.S. contain built-in partition manager which allows us to shrink and expand pre-defined drives ?
(A) Windows Vista               (B) Windows 2000
(C) Windows NT                 (D) Windows 98

74. A Trojan horse is
(A) A program that performs a legitimate function that is known to an operating system or its user and also has a hidden component that can be used for nefarious purposes like attacks on message security or impersonation.
(B) A piece of code that can attach itself to other programs in the system and spread to other systems when programs are copied or transferred.
(C) A program that spreads to other computer systems by exploiting security holes like weaknesses in facilities for creation of remote processes
(D) All of the above

75. Which of the following computing models is not an example of distributed computing environment ?
(A) Cloud computing           (B) Parallel computing
(C) Cluster computing         (D) Peer-to-peer computing