2nd puc computer science model question paper 2023

2nd puc computer science model question paper 2023,2nd puc computer science model question paper 2022-23,2nd puc computer science model question paper

  2nd puc computer science model question paper 2023

Subject: COMPUTER SCIENCE (41)                                                          Max. Marks: 70

Class: PU-II                                                                                                    Date:

PART – A

Answer all the questions.

Each question carries one mark. 1 x 20 = 20  

I. Select the correct answer from the choices given: (Repeated answers will not be considered)

       1.     VGA stands for

a.     Video Graphics Array                   b. Visual Graphics Adapter

c.     Visual Graph Array                      d. Visual Gate Array

 

       2.     Which among the following is not a Boolean postulate?

a.     X+X=X                 b. X.X=0         c. 0.X=0          d. 0+X=X

 

       3.     Which one of the following is not a derived gate?

a.     NOR          b. NAND         c. XOR            d. OR

 

       4.     A ______________ is a specialized format for organizing and storing data.

a.     Data          b. Searching    c. Data Structure         d. Sorting

 

       5.     A function call is not known until the time of the call at runtime is the

a.     Message Passing               b. Dynamic Binding

c.     Data Hiding                      d. Data Abstraction

 

       6.     The reusability of the code is performed in

a.     Object       b. Inheritance              c. Polymorphism         d. Encapsulation

 

       7.     __________ constructors can be invoked by explicit or implicit call

a.     Zero Argument Constructor         b. Parameterized Constructor

c.     Copy Constructor                         d. Destructor

 

        8.     The operator used while defining derived class is

a.     :: (scope resolution)          b. ; (semicolon)           c. .(dot)      d. : (colon)

        9.     ________ is the built-in pointer that hold the address of the object defined for the class

a.     this            b. new             c. delete          d. and

 

      10.  the _________ clause of select query allows us to select only those rows in the result that satisfy a specified condition.

a.     from          b. where          c. having         d. like

 

       11.  _________ may have a geographical area up to 1 km

a.     LAN          b. WAN                       c. MAN                       d. PAN

 

       12.  On a ___________ channel, each interface serves as both transmitter and receiver but only one interface can transmit at a time.

a.     Simplex     b. Half duplex             c. Full duplex              d. None of these

 

       13.  _________ is a software application that enables the user to interact with web page information

a.     Computer              b. server          c. browser       d. all of the above

 

       14.  ___________ is a program which has the potential to harm the computer system.

a.     Virus         b. Operating System   c. thread          d. word

 

       15.  ___________ is the service of internet

a.     www          b. HTTP                      c. SLIP                        d. FTP

II. Fill in the blanks choosing the appropriate word/words from those given in brackets. (Repeated answers will not be considered) (Security, Redundancy, DBMS, Database, Table)

16. Collection of rows and columns is called as _________

17. ________is a collection of interrelated data?

18. Data duplication is called as __________

19. ____________is a software for creating and managing databases?

20. Protection of data is the ___________

PART – B

III. Answer any four questions. Each question carries two marks.                        4 x 2 = 8

21. Prove (X+Y)(X+Z)=X+YZ using algebraic method.

22. What are minterms and maxterms?

23. Define polymorphism. Give an example.

24. Define:

            a. Constructors

            b. Destructors

25. Mention the types of data files.

26. Write any two applications of database.

27. Write the syntax and example for insert command in SQL.

28. Mention any two antivirus softwares.

PART – C

IV. Answer any four questions. Each question carries three marks.                        4 x 3 = 12

29. What is cache memory? Explain their types.

30. Realize AND, OR and NOT gates using NOR gate.

31. Write any three applications of stack.

32. Define an array of pointers. Give an example.

33. Give the functions of the following:

    a) get()        b) getline()      c) read()

34. Mention the data types available in DBMS.

35. What is e-commerce? Explain any two types.

36. Explain any three text formatting tags in HTML.

 

PART – D

V. Answer any six questions. Each question carries five marks.                         6 x 5 = 30

 

37. Reduce F(A,B,C,D)=∑(0,2,4,6,10,14) USING K-MAP.

38. Give the applications of queues.

39. Write an algorithm to search an element using Binary search technique.

40. Mention any five advantages of OOP over procedural programming languages.

41. Give the differences between procedural programming and object oriented programming.

42. What is function overloading? Explain the needs for function overloading.

43. Write the rules for to be followed in writing constructor function in C++.

44. What are the advantages of inheritance?

45. Write the differences between Manual and Electronic Data Processing.

46. Explain any five relational/comparison operators in SQL with suitable examples.

47. Define the following.

            a. SIM             b. SMS            c. Wi-Fi           d. Chatting      e. Video Conferencing

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