Machine-translated by Google. Questions are authored in English.
Top

WB SET Exam 2024: 26th SET, Paper II, Computer Science

  • Paper code: 22
  • Series: X
  • Language: English
  • 20 pages
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 1 of 20
Page 1 of 20
Text of page 1
26/2024
Roll No.
          (Write Roll Number from left side
            exactly as in the Admit Card)                                            Signature of Invigilator

                                                                            Question Booklet Series             X
                                                        PAPER–II            Question Booklet No.

Subject Code : 22

                                              COMPUTER SCIENCE
Time : 2 Hours                                                                                 Maximum Marks: 200
                                                Instructions for the Candidates

 1. Write your Roll Number in the space provided on the top of this page as well as on the OMR Sheet provided.
 2. At the commencement of the examination, the Question Booklet will be given to you. In the first 5 minutes,
    you are requested to open the booklet and verify it:
         (i) To have access to the Question Booklet, tear off the paper seal on the edge of this cover page.
        (ii) Faulty booklet, if detected, should be got replaced immediately by a correct booklet from the invigilator
             within the period of 5 (five) minutes. Afterwards, neither the Question Booklet will be replaced nor any
             extra time will be given.
        (iii) Verify whether the Question Booklet Number is identical with OMR Sheet Number; if not, the full set
              is to be replaced.
        (iv) After this verification is over, the Question Booklet Series and Question Booklet Number should be
             entered on the OMR Sheet.
 3. This paper consists of One Hundred (100) multiple-choice type questions. All the questions are compulsory.
    Each question carries two marks.
 4. Each Question has four alternative responses marked: A              B   C     D . You have to darken the circle as
     indicated below on the correct response against each question.
     Example:             A     B     C       D , where C is the correct response.
 5. Your responses to the questions are to be indicated correctly in the OMR Sheet. If you mark your response
    at any place other than in the circle in the OMR Sheet, it will not be evaluated.
 6. Rough work is to be done at the end of this booklet.
 7. If you write your Name, Phone Number or put any mark on any part of the OMR Sheet, except in the space
    allotted for the relevant entries, which may disclose your identity, or use abusive language or employ any other
    unfair means, such as change of response by scratching or using white fluid, you will render yourself liable
    to disqualification.
 8. Do not tamper or fold the OMR Sheet in any way. If you do so, your OMR Sheet will not be evaluated.
 9. You have to return the Original OMR Sheet to the invigilator at the end of the examination compulsorily and
    must not carry it with you outside the Examination Hall. You are, however, allowed to carry question booklet
    and duplicate copy of OMR Sheet after completion of examination.
10. Use only Black Ball point pen.
11. Use of any calculator, mobile phone, electronic devices/gadgets etc. is strictly prohibited.
12. There is no negative marks for incorrect answer.
32950                                                                                           [ Please Turn Over ]
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 2 of 20
Page 2 of 20
Text of page 2
The Question Booklet
  is encrypted with
     QR code for
  security purpose.
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 3 of 20
Page 3 of 20
Text of page 3
X–3                                                   22

                                           COMPUTER SCIENCE
          1. How many numbers of different                     5. Generation of intermediate code based on
          automata can be formed with 2 states (q0          abstract machine model is useful in compilers
          and q1) and over the alphabets (0, 1, 2)?         because
          (q0 is always the starting state)                        (A) It helps in implementation of lexical
            (A) 5832                                                    analysis and syntax analysis
            (B) 256
                                                                    (B) Syntax-direct translations can be
            (C) 512
                                                                        written for intermediate code
            (D) 1024
                                                                        generation
                                                                      (C) It enhances the probability of the
                                                                           front end of the compiler
                                                                   (D) It is not possible to generate code for
                                                                        real machines directly from high level
   2. Drawing the concept “seeing few white                             language programs
swan” we conclude all swans are white, falls under
_________ in AI.
          (A) analogical learning
           (B) supervised learning
           (C) learning automata
          (D) inductive learning


                                                                6. A company has choice of two languages L1
                                                            and L2 to develop software for their client. Number
                                                            of LOC required to develop an application in L2 is
   3. The number of cells/users of GSM is almost                       thrice the LOC in language L1. Also,
_______ relative to AMPS.                                              software has to be maintained for next
      (A) one half                                                     10 years. Various parameters for two
      (B) the same                                                     langauges are given below to decide
      (C) three times longer                                which Language should be preferred for
      (D) six times longer                                  development.
                                                                  Parameter              L1              L2
                                                             Man-year needed         LOC/1000 LOC/1000
                                                             for development
   4. Which of the following statements is false?            Development Cost        Rs. 70,000 Rs. 90,000
         (A) Halting problem of turing
               machines is undecidable                       Cost of Maintenance Rs. 1,00,000 Rs.40,000
         (B) Given two arbitary context-free                 per year
               grammars G 1 , G 2 and it is                 Total cost of the project includes cost of
               undecidable if L(G1)=L(G2)                   development and maintenance. What is the LOC
         (C) Determining whether a context-                 for L1 for which cost of developing of the software
               free grammar is ambiguous and                           with both Languages must be the same?
               undecidable                                              (A) 2000
         (D) Given two regular grammers G1,                             (B) 6000
               G 2 and it is undecidable if                             (C) 3000
               L(G1)=L(G2)                                              (D) 5000


                                                                                        [ Please Turn Over ]
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 4 of 20
Page 4 of 20
Text of page 4
22                                                     X–4

    7. Which one of the following statements is                11. In socket programming, which of the
false?                                                       following functions indicates that the server will
          (A) User level threads are not                     accept a connection?
               scheduled by the kernel                              (A) socket ( )
          (B) When a user level thread is                           (B) bind ( )
               blocked, all other threads of its                    (C) connect ( )
               process are blocked                                  (D) listen ( )
          (C) Context switching between user
               level threads is faster than context
               switching between kernel level                          12. Presence of which one of the
               threads                                                 following characteristics in a project
          (D) Kernel level threads cannot share                        would indicate the suitability of the
               the code segment                                        Extreme Programming (XP) model?
                                                                     (A) Stable and well understood
                                                                         requiements
                                                                     (B) Mission critical software
                                                                     (C) Service-oriented project
    8. Consider the following partial requirement                    (D) Extremely large project
for a software: “When a camera mounted on the
gate detects an incoming vehicle, the gate should
          be opened, if the incoming vehicle is a               13. The general homogeneous coordinate
          registered vehicle”. It can be considered          representation of a point P (x, y) can also be written
          to be which one of the following types of          as
          requirement?                                                   (A) (x, y, z)
            (A) Functional requirement                                   (B) (h.x, h.y, h)
            (B) Non-functional requirement
                                                                         (C) (x/h, y/h, h)
            (C) Constraint
            (D) External interface                                            1     1 1
                                                                         (D)      ,    , 
                                                                              h. x h. y h 


                                                               14. For students in a college, if we want to
    9. Which one of the following views is implicit          partition the students based on the different extra
in a SRS document?                                           curricular activities that they participate in, which
           (A) Black box                                     clustering approach will be most suitable for this
           (B) White box                                     task?
           (C) Grey box                                              (A) Hierarchical
           (D) Glass box                                             (B) Overlapping
                                                                     (C) Partitional
                                                                     (D) Partial


                                                                        15. One bit of static memory is
   10. If the region codes for the two end points of                    composed of
a line are 1010 and 0101, the line is
                                                                         (A) A capacitor
        (A) completely visible
        (B) completely invisible                                         (B) A flip-flop
        (C) partially visible                                            (C) Decoder
        (D) can’t say anything                                           (D) Multiplexer
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 5 of 20
Page 5 of 20
Text of page 5
X–5                                                  22

  16. Which one of the following is not true of the           20. In fixed point number representation, a
agile model of software development?                        negative number in binary number system (in a
           (A) Incremental development and                  computer) is represented by
                delivery                                           (A) Signed—Magnitude representation
           (B) Evolutionary development                            (B) Signed—1’s complement
           (C) Developed software usually has                                    representation
                high quality and reliability                       (C) Signed—2’s complement
           (D) Facilitation of customer feedback                                 representation
                                                                      (D) Both (A) and (B)




  17. Which of the following is not a symmetric
key cryptography scheme?
           (A) El Gamel
           (B) Blowfish                                       21. How new state is generated in Genetic
           (C) AES                                          Algorithm?
           (D) IDEA                                                (A) Composition
                                                                   (B) Crossover
                                                                   (C) Mutation
                                                                   (D) Both (B) and (C)
  18. Consider the Language:
L  {x | x  (a, b) * and number of strings in x is
divisible by either 2 or 3 but not both}. The
minimum number of states and number of final
states required to create a DFA are
        (A) 6 and 4                                           22. Given
        (B) 7 and 4                                          S1= If a procedure makes no call, then activation
        (C) 7 and 3                                               record can be created statically.
        (D) 6 and 3                                          S2= Compilers from programming languages,
                                                                  that support recursion necessarily need heap
                                                                  storage for memory allocation in the run-
                                                                  time environment.
                                                             S3= Some code optimizations are carried out on
                                                                  the intermediate code because, they enhance
         19. Parent String 1 : 00000000                           the portability of the compiler to other
             Parent String 2 : 11111111                           target processors.
Then what should be the offsprings in 1 point               Which of the above statements is/are correct?
crossover?                                                             (A) Only S1
       (A) 01010101 ; 10110011                                         (B) S1 and S2
       (B) 11001100 ; 10011000                                         (C) S1 and S3
       (C) 00110011 ; 11001100                                         (D) Only S3
       (D) 00011111 ; 11100000

                                                                                       [ Please Turn Over ]
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 6 of 20
Page 6 of 20
Text of page 6
22                                                   X–6

  23. ________ are not a data mining                         28. Given that “X is sweet” with T(X) = 0.7 and
functionality.                                             “Y is sweet” with T(Y)=0.5, then the Fuzzy truth
            (A) Clustering and analysis                    value of the proposition. “If X is sweet and Y is
            (B) Selection and interpretation               Sweet” is
            (C) Classification and regression                         (A) 0.2
            (D) Characterization             and                       (B) 0.7
                discrimination                                         (C) 0.5
                                                                      (D) 0.4


  24. The region code for visible region in Cohen-
Sutherland polygon clipping algorithm is
       (A) 0000
       (B) 0110                                              29. Which of the following fields is present in
       (C) 1001                                            IPv4 header but missing in IPv6 header?
       (D) 1111                                                   (A) Traffic class
                                                                  (B) Type of service
                                                                  (C) Flow level
          25. Why does the reliability of a                       (D) Version
          software application keeps changing
          throughout its life?
            (A) Fault detection and correction
            (B) Dynamic nature of software
            (C) Process evolution
            (D) Users become more proficient due
                to continuous usage                                  30. Roulette wheel selection scheme
                                                                     is preferred when
                                                                      (A) needs low selection pressure
  26. Which of the following is not an objective                      (B) fitness values are non-uniformly
of Network Security?                                                      distributed
       (A) Non-repudiation                                            (C) fitness values are uniformly
       (B) Confidentiality                                                distributed
       (C) Attainability                                              (D) needs high population diversity
       (D) Message Integrity


       27. SELECT itemname, color,
       clothesSIZE, SUM(quantity)
FROM sales                                                   31. Which of the following is the most
GROUP BY rollup (itemname, color, clothes SIZE);           commonly used data structure for implementing
How many grouping is possible in this rollup?                      Dijkstra’s Algorithm?
     (A) 8                                                            (A) Max priority queue
     (B) 4                                                            (B) Stack
     (C) 2                                                            (C) Circular queue
     (D) 1                                                            (D) Min priority queue
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 7 of 20
Page 7 of 20
Text of page 7
X–7                                                     22

 32. Cache memory works much faster than                    36. The expression for Absorption law is given
main memory system (RAM) because                          by
           (A) cache memory system is                           (A) A+AB=A
               fabricated using different                       (B) A+AB=B
               semiconductor material                           (C) AB+AA'=A
           (B) it is a addressless RAM system                   (D) A+B=B+A
               that follows associative memory
               structure
           (C) cache memory is a virtual memory
               system                                               37. Which one of the following is
           (D) statements (B) and (C) are correct                   true of an object-oriented design solution
                                                                    using a deep inheritance hierarchy?
                                                                      (A) It is a sign of a good design as it
                                                                           increases reuse
  33. Which of the following statements is false?                     (B) It is a sign of a good design as it
         (A) Every regular grammar is linear                               leads to sophisticated and versatile
         (B) Pumping lemma can prove that                                  classes at the leaf level
               any finite language is regular                         (C) It is a sign of good design, as it
         (C) A linear grammar can have at                                  increases polymorphic bindings
               most one non-terminal at the right                     (D) It is a sign of bad design, as it
               hand side of production                                     breaks encapsulation
         (D) A language with finite numbers
               of string can be regular
                                                            38. In a paged memory, the page hit ratio is
                                                                    0.35, the time required to access a page
                                                                    in secondary storage is equal to 100 ns.
   34. Which of the following statements is/are                     The time required to access a page in
true?                                                               primary memory is 10 ns. The average
          (A) Two successive translations are             time required to access a page is
               additive                                               (A) 65.0 ns
          (B) Two successive rotations are                            (B) 68.0 ns
               additive                                               (C) 68.5 ns
          (C) Two successive scaling are                              (D) 78.5 ns
               multiplicative
          (D) Statements (A) and (C)

                                                            39. A multilayer feedforward network has 5
                                                          input units, one hidden layer with 4 units and 3
                                                          output units. How many weights does this network
  35. Virtual memory system can be implemented                      have?
by which of the following technique(s)?
                                                                     (A) 16
      (A) Paging Technique
       (B) Segmentation Technique                                    (B) 20
       (C) Demand Paging                                             (C) 24
      (D) Paging and Segmentation Techniques                         (D) 32

                                                                                      [ Please Turn Over ]
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 8 of 20
Page 8 of 20
Text of page 8
22                                                   X–8

   40. Consider the graph M with three vertices.             43. Consider a direct mapped cache with 8
Its adjacency matrix is shown below. Which of the          cache blocks (numbered 0-7). If the memory block
           following is true?                              requests are in the following order—
                                                           3,5,2,8,0,63,9,16,20,17,25,18,30,24,2,63,5,82,17,24
                     0 1 1 
                                                           Which of the following memory blocks will not be
                 M  1 0 1 
                                                         in the cache at the end of the sequence?
                     1 1 0 
                                                                       (A) 3
       (A) Graph M has no minimum spanning                             (B) 18
           tree                                                        (C) 20
       (B) Graph M has a unique minimum                                (D) 30
           spanning trees of cost 2
       (C) Graph M has 3 distinct minimum
           spanning trees, each of cost 2
       (D) Graph M has 3 spanning trees of                    44. Which of the following is a good alternative
           different costs                                 to the star schema?
                                                                  (A) Snowflake schema
                                                                   (B) Snow star schema
                                                                   (C) Star snowflake schema
                                                                  (D) Fact constellation


  41. Which defuzzification method can be used
only for symmetrical output membership function?                     45. Feasible region is the set of points
       (A) Height method                                             which satisfy
       (B) Centre of Gravity method                                    (A) the objective functions
       (C) Weighted average method                                     (B) some of the given constraints
       (D) Centre of area method                                       (C) all of the given constraints
                                                                       (D) some of the decision variables




                                                             46. A processor performs addition of the
                                                           following 2’s complement numbers 01001101 and
                                                           11101001. After the execution of this addition
  42. Which one of the following is an application         operation, the status of the carry overflow and sign
of the backtracking algorithm?                                       flags respectively will be
       (A) Finding the shortest path                                   (A) 110
       (B) Finding the efficient quantity to shop                      (B) 010
       (C) Ludo                                                        (C) 100
       (D) Crossword                                                   (D) 101
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 9 of 20
Page 9 of 20
Text of page 9
X–9                                                    22

  47. Regular expression corresponding to the                50. Numbers of vertices of odd degree in a
following DFA is                                           simple graph is
                              q1                                  (A) always even
                      b
                                                                  (B) always odd
             a                        b        a
                                                                  (C) either even or odd
                          a
                                                                  (D) always zero
                 q0                       q2


                               b
       (A)  aU b (aU ba * b )  *                                   51. A system uses FIFO policy for
                                                                     page replacement. It has 4 page Frames
       (B)  aU b ( a *U ba * b ) 
                                                                     with no pages loaded to begin with. The
       (C)  aU b (aU b * ab )  *                         system first accesses 100 distinct pages in some
                                                           order and then accesses the same 100 pages but in
       (D)  a *U b ( aU ba * b )                         reverse order. How many page fault can occur?
                                                                  (A) 196
                                                                   (B) 192
                                                                   (C) 197
                                                                  (D) 195

          48. The numbers of states and the
          numbers of final states required for the
DFA that accepts the language L   |  (a, b) *           52. Consider a 5 stage pipelined processor with
and number of a in  is devisible by 3 and number                   stage delays 5ns, 8ns, 4ns, 6ns and 8ns,
                                                                    the inter stage buffer delay is 2ns. (while
of b in  is not devisible by 4 is
                                                                    executing the large no. of instructions
       (A) 12 and 1                                                 without considering the conflicts). The
       (B) 12 and 5                                        throughput of the pipeline is
       (C) 16 and 5                                               (A) 1×108
       (D) 16 and 9
                                                                   (B) 1.25×108
                                                                   (C) 0.8×108
                                                                  (D) 0.5×108



                                                             53. A B+tree can contain a maximum of 7
   49. Which one of the following is the correct           pointers in a node. What is the maximum number
ordering of the coupling of modules from strongest                    of keys in leaves?
(least desirable) to weakest (most desirable)?
                                                                       (A) 6
        (A) Content, common, control, stamp, data
        (B) Common, content, control, stamp, data                      (B) 3
        (C) Content, data, common, stamp, control                      (C) 4
        (D) Data, control, common, stamp, content                      (D) 7

                                                                                       [ Please Turn Over ]
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 10 of 20
Page 10 of 20
Text of page 10
22                                              X–10

  54. Which message is used for agent discovery        57. In a B-tree, block size is 1KB, search key
and agent solicitation in Mobile IP?                size is 8 bytes, data pointer size is 10 bytes and
                                                    block/tree pointer size is 14 bytes. What is the
           (A) SMTP
                                                    maximum number of data pointer possible in a
           (B) FTP                                  non-leaf node of the above given B-tree?
           (C) ARP                                              (A) 31
           (D) ICMP                                             (B) 32
                                                                (C) 30
                                                                (D) 33


                                                               58. When a derived class is allowed
                                                    to change the definition of its base class member
                                                    function, it is referred to as ________.
  55. For the same size of training data as input
                                                            (A) function overloading
the faster learning technique for NN is
                                                            (B) multi level inheritance
           (A) supervised training with Gradient            (C) function overriding
               decent error correction                      (D) hybrid inheritance
           (B) supervised training          with
               stochastic method
                                                       59. Let G be a simple graph with 10 vertices. In
           (C) supervised training with error
                                                    the graph G, there is a vertex of degree 1, a vertex
               calculation                          of degree 2, a vertex of degree 3, a vertex of degree
           (D) supervised training with Hebbian     4, a vertex of degree 5, a vertex of degree 6, a
               method                                         vertex of degree 7, a vertex of degree 8
                                                              and a vertex of degree 9. What can be the
                                                              degree of the remaining (last) vertex?
                                                                (A) 2
                                                                (B) 3
                                                                (C) 4
                                                                (D) 5
   56. Palindromes can’t be recognized by finite
state automata because,
                                                       60. Which of the following statements is true?
          S1= FSA cannot deterministically fix
                the midpoint.                                   (A) Regression testing and acceptance
                                                                    testing are same
          S2= Even if the mid point is known, it
                cannot match the second half with               (B) Regression tests show if all defects
                 the first half.                                    in the modified part of the code
                                                                    have been resolved
          S3= FSA cannot have arbitrarily large
                 memory.                                        (C) Regression tests are performed to
                                                                    detect if code changes have
       (A) only S1 is sufficient                                    introduced any defects
       (B) S2 and S3 are sufficient                             (D) Regression tests should only be
       (C) S1 and S3 are sufficient                                 performed during integrtion
       (D) S1, S2, S3 all are sufficient                            testing
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 11 of 20
Page 11 of 20
Text of page 11
X–11                                               22

  61. A system has 6 identical resources and N          64. Backtracking algorithm is implemented by
processes competing for them. Each process can        constructing a tree of choices called as _______.
          request at most 2 resources. Which one             (A) State-space tree
          of the following value of N could lead to          (B) State-chart tree
          a deadlock?
                                                             (C) Node tree
             (A) 1                                           (D) Backtracking tree
             (B) 2
             (C) 3
             (D) 6
                                                                65. In cloud, service uptime is 45
                                                                minutes and downtime is 15 minutes in
                                                                an hour. What is the availability of the
 62. Considering the following two statements,        service?
which option is correct?                                     (A) 0.15
 S1= The context-free languages are closed under             (B) 0.45
      homomorphism.                                          (C) 0.75
 S2= Any multitape turing machine cannot be                  (D) 0.95
      simulated by single tape turing machine.
             (A) S1 and S2 both are true
             (B) S1 is true and S2 is false
             (C) S1 and S2 both are false               66. In a neural network if sigmoids were present
             (D) S1 is false and S2 is true           the three layers would
                                                                  (A) extend into 4 layers
                                                                  (B) collapse into only 2 layers
                                                                  (C) Either (A) or (B) depending upon
   63. Match List-I with List-II and select the                        situation
correct answer using the codes given below the
                                                                  (D) Neither (A) nor (B)
lists:
           List-I                  List-II
(a) ADD R1, R2, R3 (1) Three address instruction
(b) PUSH X         (2) Two address istruction
                                                         67. If a problem can be solved by combining
(c) ADD            (3) One address instruction        optimal solutions to non-overlaping problems, the
(d) SUB R1, R3     (4) Zero Address instruction       strategy is called _______.
                                                              (A) Dynamic programming
          Where R1, R2, R3 are Registers and X                (B) Greedy
          is the memory address.                              (C) Divide and Conquer
              Codes:                                          (D) Recursion
              (a)    (b)    (c)    (d)
       (A)    (1)    (3)    (4)    (2)
       (B)    (4)    (3)    (4)    (3)
       (C)    (2)    (3)    (1)    (4)                          68. A cyclic group is always a/an
       (D)    (1)    (4)    (4)    (2)                           (A) Subgroup
                                                                 (B) Monoid
                                                                 (C) Abelian group
                                                                 (D) Semi group

                                                                                 [ Please Turn Over ]
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 12 of 20
Page 12 of 20
Text of page 12
22                                                  X–12

  69. What will be the output of the following             72. In public key cryptography, exponentiation
‘C++’ code?                                             is a commonly used operation. Which option has
           #include <iostream>                          the tightest upper bound on the number of
           #include <vector>                            multiplications required to compute bn mod m
           using namespace std;                         where 0  b and n  m ?
               int main ( )
           {                                                       (A) O (log n)
               vector<int>v;
      for (int i=1; i<=5; i++)                                      (B) O ( n )
      v. push–back (i);
      Cout<<v.size();                                               (C) O (n2 )
      Cout<<””<<v.capacity();
      return 0;                                                    (D) O (n)
      }
       (A) 85
       (B) 88
       (C) 55
       (D) 58




         70. Let ri(D) and Wi(D) are read and
                                                           73. The main purpose of integration testing is
         write operations respectively on data D
                                                        to find which one of the following types of errors?
         by transaction Ti. Consider the following
                                                                    (A) Logic errors
         schedules:
 S1= r2(A), r3(B), W2(A), r3(A), r1(C), r1(A), r2(C),               (B) Algorithmic errors
     W3(B), W1(C).                                                  (C) Arithmetic errors
 S2= W2(B), r3(A), r1(B), r3(B), r2(C), r1(C),                      (D) Interface errors
     W2(C), r3(C), W1(C)
Which of the following is correct?
        (A) S1 is conflict serializable
        (B) For schedule S1, T2T3T1 is only
            possible serial schedule which is
            conflict equivalent to S1
        (C) S2 is view serializable
        (D) Serial schedule T2T3T1 is view               74. Which of the following technologies help
            equivalent to S2                            in evolution of cloud computing?
                                                            (i) Grid computing and utility computing.
                                                           (ii) Virtualization and Hypervisor.
          71. The number of non-negative                  (iii) Edge and Fog computing.
solutions to x  y  z  18 with the conditions           (iv) Service-oriented architecture.
x  3, y  2 and z  1 is
                                                                   (A) (ii) and (iii)
        (A) 86
                                                                   (B) (i), (ii) and (iii)
        (B) 88
                                                                   (C) (i) and (ii)
        (C) 91
                                                                   (D) All (i), (ii), (iii) and (iv)
        (D) 94
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 13 of 20
Page 13 of 20
Text of page 13
X–13                                               22

                                                       79. Consider a relation schema r(A,B,C,D,E,F)
  75. Match the following:                           and attribute A is element of every candidate key
                                                     of r. Maximum possible candidate key of r is
                                                             (A) 8
                                                             (B) 9
                                                             (C) 11
  (a) 192.7.255.2     (i) Class-A                            (D) 10
  (b) 129.255.255.1 (ii) Class-B
  (c) 125.0.0.0     (iii) Class-C
      Codes:
            (a)    (b)      (c)
       (A) (i)     (ii)    (iii)
       (B) (ii)    (iii)    (i)
       (C) (iii)   (ii)     (i)
       (D) (iii)    (i)    (ii)                         80. Which of the following is false?
                                                                 (A) The C++ interfaces are
                                                                     implemented using abstract
                                                                     classes
          76. Which of the following is good                     (B) The purposes of an abstract class
          for sorting arrays having less than 100                    is to provide an appropriate base
          elements?                                                  class from which other classes
            (A) Quick sort                                           can inherit
            (B) Selection sort                                   (C) Abstract classes can be used to
                                                                     instantiate objects and serve only
            (C) Merge sort
                                                                     as an interface
            (D) Insertion sort
                                                                 (D) Classes that can be used to
                                                                     instantiate objects are called
                                                                     concrete class
  77. Depth First Search is equivalent to which of
the traversal in the Binary Trees?
            (A) Pre-order
            (B) Post-order
            (C) Level-order
            (D) In-order

                                                        81. Protocol stack of IoT are as follows:
                                                                 (A) Perception layer, Network layer
  78. The stalling of the processor due to the                       and Application layer
unavailability of the instructions is called as                  (B) Internet,    Transport     and
_______.                                                             Application layer
       (A) Control Hazards                                       (C) Physical layer, Transport and
       (B) Structural Hazards                                        Application layer
       (C) Input Hazards                                         (D) Network, Transport and
       (D) Data Hazards                                              Application layer

                                                                                [ Please Turn Over ]
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 14 of 20
Page 14 of 20
Text of page 14
22                                                         X–14

 82. Consider the following four statements:                    86. In memory interleaving, the lower order
       S1: MD5 is vulnerable to the Birthday                  bits of the address is used to _______.
            attack.                                                  (A) get the data
       S2: Traceroute uses the “Destination                          (B) get the address of the module
            port unreachable” ICMP error                             (C) get the address of the data within the
            message.                                                     module
       S3: AES is a type of public key                               (D) get the address of the data outside the
            encryption algorithm.                                        module
       S4: IPv4 has a maximum of 60 byte
            fixed header size.
How many of the above statements are true?
         (A) 1
         (B) 2
         (C) 3
         (D) 4
                                                                87. What is the time complexity of the search
                                                              function in a hash table using a binary tree?
  83. Which of the following requires a device                       (A) O (1)
        driver?                                                      (B) O (n)
              (A) Disk                                               (C) O (logn)
              (B) RAM                                                (D) O (n logn)
              (C) L2 Cache
              (D) L1 Cache



  84. Consider a project with the following
functional units: 50 user inputs, 40 user outputs, 30
users enqueries, 5 user files, 3 external interfaces.           88. Which of the following statements regarding
What will be the unadjusted function points for the           the features of the object-oriented approach to
project?                                                      databases are true?
              (A) 391                                            (a) The ability to develop more realistic models
              (B) 491                                                of the real world
                                                                (b) The ability to represent the world in a non-
              (C) 591
                                                                     geometric way
              (D) 691                                            (c) The ability to develop databases using
                                                                     natural language approaches
                                                                (d) The need to split objects into their
  85. A relation R on a set is represented by the                    component parts
                                                                 (e) The ability to develop database models
matrix 1,1, 0  , 1,1,1 ,  0,1,1 . R is ______.                 based on location rather than state and
                                                                         behaviour
         (A) Reflexive
                                                                          (A) (a), (b) and (c)
         (B) Symmetric                                                    (B) (b), (c) and (d)
         (C) Both Reflexive and Symmetric                                 (C) (a), (d) and (e)
         (D) Neither Reflexive nor Symmetric                              (D) (c), (d) and (e)
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 15 of 20
Page 15 of 20
Text of page 15
X–15                                                 22

                                                        93. Consider a relation schema r (A, B, C, D)
                                                      with F as set of functional dependencies. F contains
  89. Match the following:
                                                      the following functional dependencies:
                                                                    AB
                                                                    AD
                                                                    AC
    I. Primary index (a) non key and ordering                       BD
   II. Clustering index (b) non-key and non-                     We decompose the relation r into two
                             ordering                            relation schemas r 1(A, B, C) and
  III. Secondary index (c) Key and ordering                      r2 (B, D).
       (key)                                                     Which of the following statement(s)
   IV Secondary index (d) Key and non                            is/are correct regarding above situation?
       (non-key)             ordering                      (I) Decomposition in lossless
       Codes:
                                                          (II) Decomposition in dependency preserving
                    (I) (II) (III) (IV)
             (A) (d) (a)         (c)  (b)                (III) (Functional dependency in r1) U (Functional
             (B) (c)      (a)    (d)  (b)                      dependency in r2) = F
             (C) (c) (b) (d)          (a)                (IV) Decomposition is in BCNF
             (D) (d) (b) (c)          (a)                      (A) Only I
                                                               (B) I and II
                                                               (C) I, II and IV
          90. What is the value of the postfix                 (D) III and IV
          expression
       6 3 2 4 + – *?
       (A) 1
        (B) –18
        (C) 40
       (D) 74



  91. A hardisk has 32 recording of surfaces, 256
cylinders, 512 sectors per track and sector size is
1KB. The total size of the hardisk is
            (A) 4 GB
            (B) 4 TB
                                                        94. What is the availability of software with the
            (C) 2 GB
                                                      following reliability parameters?
            (D) 4 MB
                                                         (a) Mean Time Between Failure (MTBF)=25
                                                             days.
                                                         (b) Mean Time To Repair (MTTR)=6 hours.
 92. The extra time needed to bring the data into
memory in case of a miss is called as ________.                    (A) 1%
       (A) Delay                                                   (B) 24%
       (B) Propagation time                                        (C) 98.06%
       (C) Miss penalty                                            (D) 99.009%
       (D) Extra time

                                                                                   [ Please Turn Over ]
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 16 of 20
Page 16 of 20
Text of page 16
22                                                X–16

  95. A solution to the Dining Philosophers             97. Which data structure is most suitable for
Problem which avoids deadlock is/are                  uniform cost search?
            (A) Ensure that all philosophers pick            (A) Stack
                up the left fork before the right            (B) Queue
                fork                                         (C) D-Queue
            (B) Ensure that all philosophers pick            (D) Priority queue
                up the right fork before the left
                fork
            (C) Ensure that one particular
                philosopher pick up the left before
                the right fork and that all other
                philosophers pick up the right fork
                before the left fork
            (D) Ensure that all philosophers pick
                up the left and right fork
                sequentially one after another




        96. Consider a portion of the network
        diagram given below. What is the LF of
        activity C?
 ES = 11, EF = 17              ES = 26, EF = 33
 LS = 18, LF = 20              LS = 27, LF = 38

        A                               D



                         C
                                                         98. Use the effect of slow start on a link with 8
                                                      milliseconds RTT and there is no congestion. The
                                                      receiver window is 48kB and maximum segment
        B                               E
                                                      size is 2kB. How long does it take before the first
                                                      full window can be sent?
                                                             (A) 24 msec
                                                              (B) 40 msec
                                                              (C) 48 msec
 ES = 7, EF = 16               ES = 26, EF = 32
                                                             (D) 64 msec
 LS = 9, LF = 20               LS = 27, LF = 37

      (A) 24
      (B) 25
      (C) 26
      (D) 27
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 17 of 20
Page 17 of 20
Text of page 17
X–17                                            22

99. Time complexity of Best First Search is        100. Match the following:
                                                   (i) Mark and Swap      (a) Optimization
         (A) O (bd )                                   Algorithm
                                                  (ii) Temporaries        (b) Garbage Collection
         (B) O (ed )
                                                 (iii) Loop unrolling     (c) Activation Records
         (C) O (log n)                           (iv) Local Optimization (d) Basic Block
                  2
         (D) O (n )




                                                       Codes:
                                                        (A) (i)-a (ii)-c   (iii)-b (iv)-d
                                                        (B) (i)-b (ii)-c   (iii)-d   (iv)-a
                                                        (C) (i)-b (ii)-d   (iii)-a   (iv)-c
                                                        (D) (i)-b (ii)-c   (iii)-a (iv)-d
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 18 of 20
Page 18 of 20
Text of page 18
22          X–18

     Space for Rough Work
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 19 of 20
Page 19 of 20
Text of page 19
X–19                             22

Space for Rough Work




                       [ Please Turn Over ]
WB SET Exam 2024 question paper, 26th SET, Paper II, Computer Science, page 20 of 20
Page 20 of 20
Text of page 20
22          X–20

     Space for Rough Work
Page 1 of 20

Source: West Bengal College Service Commission. Question paper published by West Bengal College Service Commission.