11th Public Exam March 2019 Important One Marks Questions

11th Standard

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Computer Science

Time : 01:00:00 Hrs
Total Marks : 100
    100 x 1 = 100
  1. Expand POST

    (a)

    Post on self Test

    (b)

    Power on Software Test

    (c)

    Power on Self Test

    (d)

    Power on Self Text

  2. Which one of the following is the main memory?

    (a)

    ROM

    (b)

    RAM

    (c)

    Flash drive

    (d)

    Hard disk

  3. Which device is very safe and convenient for security instead of password?

    (a)

    Scanner

    (b)

    Fingerprint Scanner

    (c)

    Trackball

    (d)

    Retinal Scanner

  4. Match the following

    (i) First Generation 1 ICS
    (ii) Second generation 2 VLSI
    (iii) Third Generation 3 Parallel Processing
    (iv) Fourth Generation 4 Vacuum tubes
    (v) Fifth Generation 5 Parallel computing
    (vi) Sixth Generation 6 Transistors
    (a)

    2,3,5,1,4,6

    (b)

    4,6,1,2,3,5

    (c)

    6,5,4,1,2,3

    (d)

    1,3,2,5,6,4

  5. Which of the following concerned with the interactions between computers and human language?

    (a)

    Artificial Neurons

    (b)

    Neural network

    (c)

    Artificial intelligence

    (d)

    Natural language processing

  6. The speed of inkjet printers generally range from _________

    (a)

    1-20 PPM

    (b)

    1-22 PPM

    (c)

    10-20 PPM

    (d)

    11-20 PPM

  7. 2\(\wedge \)50 is referred as

    (a)

    kilo

    (b)

    Tera

    (c)

    Peta

    (d)

    Zetta

  8. Which amongst this is not an Octal number?

    (a)

    645

    (b)

    234

    (c)

    876

    (d)

    123

  9. Which gate is called as the logical inverter?

    (a)

    AND

    (b)

    OR

    (c)

    NOT

    (d)

    XNOR

  10. 4 bits =................

    (a)

    Bit

    (b)

    Byte

    (c)

    Nibble

    (d)

    Word

  11. The decimal equivalent of 0.0112 is.......

    (a)

    0.6875

    (b)

    0.1875

    (c)

    0.1785

    (d)

    0.5

  12. In binary numbers, the signed negative number has a prefix?

    (a)

    -

    (b)

    0

    (c)

    1

    (d)

    2

  13. The base of an octal number system is represented by............

    (a)

    2

    (b)

    8

    (c)

    7

    (d)

    None

  14. The term data comes from the word_____________

    (a)

    number

    (b)

    datum

    (c)

    nibble

    (d)

    bit

  15. Which of the following is not the part of a microprocessor unit?

    (a)

    ALU

    (b)

    Control unit

    (c)

    Cache memory

    (d)

    register

  16. Which is the fastest memory?

    (a)

    Hard disk 

    (b)

    Main memory

    (c)

    Cache memory

    (d)

    Blue-Ray disc

  17. What is the capacity of 12cm diameter DVD with single sided and single layer?

    (a)

    4.7 GB

    (b)

    5.5 GB

    (c)

    7.8 GB

    (d)

    2.2 GB

  18. Display devices are connected to the computer through __________

    (a)

    USB port

    (b)

    Ps/2 port

    (c)

    SCSI port

    (d)

    VGA connector

  19. Microprocessor is driven by ..........

    (a)

    Clock pulses

    (b)

    ALU

    (c)

    Control unit

    (d)

    Register

  20. Which of the following regulates the speed of the microprocessor?

    (a)

    Program counter

    (b)

    Instructions set

    (c)

    ALU

    (d)

    Clock

  21. Which of the following bus is used to transfer information between the CPU and the memory?

    (a)

    System Bus

    (b)

    Data bus

    (c)

    Control Bus 

    (d)

    Address bus

  22. Which has controls read or write operations?

    (a)

    Address bus

    (b)

    Data bus

    (c)

    Control bus

    (d)

    System bus

  23. How many types of Microprocessors are there?

    (a)

    2

    (b)

    4

    (c)

    3

    (d)

    8

  24. How the different memory devices are arranged?

    (a)

    Capacity

    (b)

    Speed

    (c)

    Cost

    (d)

     All of these

  25. Which of the following OS is a Commercially licensed Operating system?

    (a)

    Windows

    (b)

    UBUNTU

    (c)

    FEDORA

    (d)

    REDHAT

  26. Android is a ________

    (a)

    Mobile Operating system

    (b)

    Open Source

    (c)

    Developed by Google

    (d)

    All the above

  27. Which operating system is used to access shared data and files any machine around the world?

    (a)

    Real time

    (b)

    Multiuser

    (c)

    Multiprocessor

    (d)

    Distributed

  28. How many functionalities are there in OS?

    (a)

    4

    (b)

    5

    (c)

    3

    (d)

    2

  29. Which one of the following is not a prominent operating system?

    (a)

    UNIX

    (b)

    iOS

    (c)

    GUI

    (d)

    Android

  30. Which of the following in Ubuntu OS is used to view the options for the devices installed?

    (a)

    Settings

    (b)

    Files

    (c)

    Dash

    (d)

    VBox_GAs_5.2 ..2

  31. Identify the default email client in Ubuntu?

    (a)

    Thunderbird

    (b)

    Firefox

    (c)

    Internet Explorer

    (d)

    Chrome

  32. Which is the default browser for Ubuntu?

    (a)

    Firefox

    (b)

    Internet Explorer

    (c)

    Chrome

    (d)

    Thunderbird

  33. In which version of windows the mouse was introduced?

    (a)

    1

    (b)

    2

    (c)

    3

    (d)

    95

  34. What is the name of the bar which appear at the bottom of the screen?

    (a)

    Scroll bar

    (b)

    Title bar

    (c)

    Task bar

    (d)

    Menu bar

  35. The default name of folder created is _____

    (a)

    New

    (b)

    Folder

    (c)

    Folder new

    (d)

    New foldrer

  36. Which are the symbols seen while collapsing and expanding the folder list in Windows explorer?

    (a)

    *,?

    (b)

    @,?

    (c)

    +,-

    (d)

    *,-

  37. Which of the following linux server distribution is freeware?

    (a)

    Red Hat

    (b)

    SUSE

    (c)

    UBUNTU

    (d)

    all of these

  38. 'My Computer' icon present in windows version.

    (a)

    XP

    (b)

    7

    (c)

    8

    (d)

    10

  39. Stating the input property and the as output relation a problem is known

    (a)

    specification

    (b)

    statement

    (c)

    algorithm

    (d)

    definition

  40. How many statements are there to alter the normal flow of control?

    (a)

    1

    (b)

    2

    (c)

    3

    (d)

    many

  41. How many principles and techniques are there for designing algorithms?

    (a)

    1

    (b)

    2

    (c)

    3

    (d)

    4

  42. An algorithm is composed of the statements

    (a)

    assignment

    (b)

    control flow

    (c)

    (a) and (b)

    (d)

    arithmetic

  43. In the flowchart, the control flow of the algorithm represented by

    (a)

    rectangular

    (b)

    diamond shaped boxes

    (c)

    arrows

    (d)

    parallelogram boxes

  44. How many cases executed atleast by case analysis statement?

    (a)

    2

    (b)

    1

    (c)

    3

    (d)

    4

  45. While decomposing, each step can be further expanded to still finer steps are known as

    (a)

    compounding

    (b)

    conditional

    (c)

    specification

    (d)

    refinement

  46. How many times the loop is iterated?
    i:= 0
    while i \(\neq \)5
    i := i+ 1

    (a)

    4

    (b)

    5

    (c)

    6

    (d)

    0

  47. If Fibonacci number is defined recursively as\(f(n)=\begin{cases} 0n=0 \\ 1n=1 \\ f(n-1)+f(n-2)otherwise \end{cases}\)to evaluate F(4), how many times F() is applied?

    (a)

    3

    (b)

    4

    (c)

    8

    (d)

    9

  48. Which statements executed repeatedly as long as the loop condition is true?

    (a)

    Sequential

    (b)

    Abstraction

    (c)

    Iteration

    (d)

    Assignment

  49. Which of the following is more powerful algorithms design technique closely related to iteration?

    (a)

    Specification

    (b)

    Abstraction

    (c)

    Recursion 

    (d)

    Decomposition

  50. Who coined C++?

    (a)

    Rick Mascitti

    (b)

    Rick Bjarne

    (c)

    Bill Gates

    (d)

    Dennis Ritchie

  51. Assume a=5, b=6; what will be result of a&b?

    (a)

    4

    (b)

    5

    (c)

    1

    (d)

    0

  52. Which of the following supports both procedural and oop concepts?

    (a)

    C

    (b)

    Java

    (c)

    C++

    (d)

    Basic

  53. Fixed point constant are also called

    (a)

    Strong constant

    (b)

    Character constant

    (c)

    Integer constant

    (d)

    Floating point constant

  54. A Hexadecimal Constant is always

    (a)

    Negative Number

    (b)

    Real Number

    (c)

    Positive Number

    (d)

    Integer

  55. Which is not a logical operator?

    (a)

    &&

    (b)

    !!

    (c)

    !

    (d)

    &

  56. Which of the following feature avoid name collection in C++?

    (a)

    Data hiding

    (b)

    Data abstraction

    (c)

    Object oriented

    (d)

    namespace

  57. The extention of machine readable code of C++ is

    (a)

    .cpp

    (b)

    .c

    (c)

    .exe

    (d)

    .obj

  58. The Boat datatype uses the precision of decimal digits is?

    (a)

    8

    (b)

    6

    (c)

    32

    (d)

    7

  59. What is the alternate name of null statement?

    (a)

    No statement

    (b)

    Empty statement

    (c)

    Void statement

    (d)

    Zero statement

  60. Which of the following is the exit control loop?

    (a)

    do-while

    (b)

    for

    (c)

    while

    (d)

    if-else

  61. Which of the following statement is true?
    (i) ; is a null statement
    (ii) Empty statement are used as placeholders is loop statements

    (a)

    only (i)

    (b)

    only (ii)

    (c)

    both are true

    (d)

    both are wrong

  62. What is the output of the followings program snippet if a=11?
    int a;
    switch (a)
    {
    case 0;
    cout << "The number is zero" << break;
    default;
    cout << "The number is nonzem'' << break;
    int b = a% 2;
    swith (b)
    {
    case 0;
    cout << "The number is event" << break;
    case 1;
    cout << "The number is odd" << break;
    }
    (i) The number is zero
    (ii) The number is non zero
    (iii) The number is even
    (iv) The number is odd

    (a)

    both (i) and (iv)

    (b)

    both (ii) and (iii)

    (c)

    both (ii) and (i)

    (d)

    both (ii) and (iv)

  63. Which of the following is not an Iteration statement in C++?

    (a)

    for

    (b)

    switch

    (c)

    while

    (d)

    none of these

  64. Which of the following loop is an exit-check loop?
    (i) for loop (ii) while loop (iii) do-while loop

    (a)

    only (i)

    (b)

    only (ii)

    (c)

    only (iii)

    (d)

    both (i) and (iii)

  65. Which function is used to check whether a character is alphanumeric or not:

    (a)

    isalphai( )

    (b)

    isdigit()

    (c)

    isalnum()

    (d)

    islowert()

  66. Which function begins the program execution?

    (a)

    isalphat()

    (b)

    isdigitt()

    (c)

    maint()

    (d)

    islower()

  67. Which of the following character does not included in length of the string?

    (a)

    space

    (b)

    /n

    (c)

    /o

    (d)

    \o

  68. c++ program execution always begins from

    (a)

    user-defined function

    (b)

    built-in function

    (c)

    maim()

    (d)

    string function

  69. The parameters used in the function call are known as

    (a)

    actual

    (b)

    main

    (c)

    built-in

    (d)

    formal

  70. Which of the following modifier enables to assign an initial value to a variable that cannot be changed later inside the body of the function?

    (a)

    constant

    (b)

    const

    (c)

    void

    (d)

    struct

  71. If no datatype is explicitly mentioned, the return datatype is

    (a)

    int

    (b)

    float

    (c)

    char

    (d)

    long double

  72. A structure declaration is given below:
    struct Time
    {
    int hours;
    int minutes;
    int seconds;
    } t;
    Using above declaration which of the following refers to seconds.

    (a)

    Time.seconds

    (b)

    Time::seconds

    (c)

    seconds

    (d)

    t.seconds

  73. What will be the output of this program?
    #include< iostream >
    using namespace std;
    struct ShoeType
    {
    string name;
    double price; .
    };
    int main ()
    {
    Shoe Type shoe 1, shoe2;
    shoe 1.name = "Adidas";
    shoe 1.price = 9.99;
    cout < shoe2 = shoe 1;
    shoe2.price = shoe2.price / 9;
    cout << shoe2.name << "#"< return 0;

    (a)

    Adidas # 9.99
    Adidas # 1.11

    (b)

    Adidas # 9.99
    Adidas # 9.11

    (c)

    Adidas # 9.99
    Adidas # 11.11

    (d)

    Adidas # 9.11
    Adidas # 11.11

  74. If array is not initialized, all the array elements contain

    (a)

    initial value

    (b)

    garbage value

    (c)

    final value

    (d)

    no value

  75. Write the output of the following snippet.
    int n[4] = {50, 40, 30, 20};
    int m = 3;
    cout << n[m = m-1];

    (a)

    50

    (b)

    40

    (c)

    30

    (d)

    20

  76. Which of the following concept encapsulate all the essential of the object that are to be created?

    (a)

    class

    (b)

    Encapsulation

    (c)

    Polymorphism

    (d)

    Abstraction

  77. Which of the following has a set of functions of related type

    (a)

    procedures

    (b)

    subroutines

    (c)

    Modules

    (d)

    objects

  78. Find the odd one out

    (a)

    Data Abstraction

    (b)

    Recursion

    (c)

    Modularity

    (d)

    Polymorphism

  79. Which of the following statement is true or false?
    (i) Abstraction reveals-the background details
    (ii) An ability of a message to be displayed in more than one form is called polymorphism
    (iii) Modularity means the systems is not divided in to set of functional units
    (iv) Write once and use it multiple times is achived by class.

    (a)

    i-false, ii-true, iii-false, iv-true

    (b)

    i-true, ii-true, iii-false, iv-false

    (c)

    i-false, ii-false, iii-true, iv-true

    (d)

    i-true, ii-false, iii-true, iv-false

  80. State whether the following statements about the constructor are True or False.
    (i) constructors should be declared in the private section
    (ii) constructors are invoked automatically when the objects are created.

    (a)

    True, True

    (b)

    True, False

    (c)

    False, True

    (d)

    False, False

  81. If all class members of the class are defined as private, then the class become

    (a)

    fully freezed

    (b)

    fully accessable

    (c)

    partially freezed

    (d)

    partially accessable

  82. An object created after the class declaration called

    (a)

    Global object

    (b)

    Local object

    (c)

    Normal object

    (d)

    in-line object

  83. Classes include the special member functions called

    (a)

    constructors

    (b)

    destructors

    (c)

    inline function

    (d)

    outline function

    (e)

    both a and b

  84. Which of the following function executes when class comes into scope?

    (a)

    destructor

    (b)

    inline

    (c)

    Normal

    (d)

    constructor

  85. The parameterised constructor test t1(10,20) is an example of

    (a)

    Explicit call

    (b)

    Implicit call

    (c)

    Normal call

    (d)

    inline call

  86. #include< iostream >
    using namespace std;
    class Point {
    private:
    int x, y;
    public:
    point(int x1,int y1)
    {
    x=x1;y=y1;
    }
    void operator+(Point&pt3);
    void showO {cout << "x=" << x << " ,y=" << y;}
    };
    void Point::operator+(point &pt3)
    {
    x + =pt3.x;
    y+=pt3.y;
    }
    int main ()
    {
    point ptl(3,2),pt2(5,4);
    pt1+pt2;
    pt1.show ();
    return 0;
    }
    Which ofthe following operator is overloaded?

    (a)

    +

    (b)

    operator

    (c)

    ::

    (d)

    =

  87. The process of selecting the most appropriate overloaded function or operator is called

    (a)

    overloaded function

    (b)

    function's signature

    (c)

    function's prototype

    (d)

    overload resolution

  88. Which of the following statement is true or false?
    (i) A function's argument list is known as a function signature
    (ii) objects cannot be overloaded
    (iii) Keyword 'operator' used to define the overloaded operator
    (iv) ?:, :: cannot be overloaded

    (a)

    i-true, ii-false, iii-true, iv-true

    (b)

    i-false, ii-true, iii-false, iv-false

    (c)

    i-false, ii-false, iii-jrue, iv-true

    (d)

    i-true, ii-false, iii-false, iv-true

  89. A class is derived from a class which is a derived class itself, then this is referred to as__________

    (a)

    multiple inheritance

    (b)

    multilevel inheritance

    (c)

    single inheritance

    (d)

    double inheritance

  90. Which of the following statement is true or false?
    (i) When a derived class inherits from many base classes is known as multilevel inheritance
    (ii) When many derived classes are created from single base class called multiple inheritance
    (iii) The transitive nature of inheritance is multilevel inheritance 
    (iv)  is an example of hierarchical inheritance.

    (a)

    (i) false, (ii) false, (iii) true, (iv) true

    (b)

    (i) true, (ii) false, (iii) true, (iv) true

    (c)

    (i) true, (ii) false, (iii) true, (iv) false

    (d)

    (i) false, (ii) false, (iii) false, (iv) true

  91. Grandfather -. father - child relationship is an example of_________.

    (a)

    Multiple Inheritance

    (b)

    Hierarchical Inheritance

    (c)

    Multilevel Inheritance

    (d)

    Hybrid Inheritance

  92. When classes are inherited with all the visibility modes but derived class cannot access the

    (a)

    private members

    (b)

    protected members

    (c)

    public members

    (d)

    both a and b

  93. Which type of inheritance is illustrated by the following code?·
    Class student {public: int marks;};
    Class topper: public student {public:char grade};
    Class overage {public: int marks-needed;};
    Class section :public average {public: char name
    [10]};
    Class overall: public average
    {public: int students};

    (a)

    single

    (b)

    multilevel and single

    (c)

    hierarchical

    (d)

    Hierarchical and single

  94. Which one of the following tracks a user visits a website?

    (a)

    spyware

    (b)

    cookies

    (c)

    worms

    (d)

    Trojans

  95. Which of the following is a crime which involves computer and network?

    (a)

    Phishing

    (b)

    Pharming

    (c)

    Hacking

    (d)

    Piracy

    (e)

    All of these

  96. Which of the following statement is false?
    (i) Users should not be truthful while using Internet
    (ii) Each should respect the privacy of other users.
    (iii) Users should strictly obey the cyber lay in computer usage
    (iv) Users should share any information with unauthorized people.

    (a)

    only (iv)

    (b)

    Both (i) and (iii)

    (c)

    Both (i) and (iv)

    (d)

    only (i)

  97. Which of the following crime that tricking people into believing something is not true?

    (a)

    Spam

    (b)

    Spoofing

    (c)

    Scam

    (d)

    Harvesting

  98. Which of the following provide searching facilities in Tamil?

    (a)

    Google

    (b)

    Bing

    (c)

    Safari

    (d)

    both a and b

  99. Which ofthe following search engine gives Tamil virtual keyboard?

    (a)

    Bing

    (b)

    Yahoo

    (c)

    Safari

    (d)

    Google

  100. In India, 42% of users mostly used language in india?

    (a)

    Tamil

    (b)

    Kannada

    (c)

    Malayalam

    (d)

    Telugu

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