What does this code achieve in terms of encapsulation? C class Student { private: int roll; public: void setRoll(int r) { roll = r; } int getRoll() { return roll; } };

Both encapsulation and data hiding

Data hiding but no encapsulation

Encapsulation without data hiding

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Encapsulation

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Question 1

What is encapsulation in C++?

Wrapping data and functions into a single unit
Hiding the class from the user
Binding UI elements to data
Using inheritance to reuse code

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Question 2

Which access specifier provides the highest level of protection?

private
protected
public
None of the above

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Question 3

Which access specifier allows inheritance but restricts direct access?

protected
private
public
None of the Above

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Question 4

What is the main benefit of encapsulation in C++?

Faster execution
Better UI design
Data security and abstraction
Simplified syntax

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Question 5

What will be the output of the following code?

class Test {
private:
    int x;

public:
    void setX(int val) { x = val; }
};

int main() {
    Test obj;
    obj.setX(10);
    cout << obj.x;
    return 0;
}

10
0
Garbage Value
Compilation Error

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Question 6

What does this code achieve in terms of encapsulation?

class Student {
private:
    int roll;

public:
    void setRoll(int r) { roll = r; }
    int getRoll() { return roll; }
};

Data hiding but no encapsulation
Encapsulation without data hiding
Both encapsulation and data hiding
None of the above

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