eQuiz - Multiple choice test on C # - part 2
- Question 16: The correct header for a class intended to be used is:
- class MyClass IFace
- class MyClass; IFace
- class MyClass: IFace
- class MyClass {IFace}
-
- Question 17: For class to use interface it must:
- Inheriting the characteristics of the interface
- Contains methods like interfaces
- Create an interface object
- All the answers above
-
- Question 18: Any class directly or indirectly expand the following class:
- System
- Object
- Drawing
- Console
-
- Question 19: Composition concept determines that you can:
- Compile good code with C #.
- Compose C # projects with different objects.
- Reduce errors by rewriting during programming.
- All the answers above.
-
- Question 20: Polymorphism occurs when methods of subclasses
- Override parent class methods but still maintain deployment.
- Maintain the same return type and parameters as the parent class, but the implementation is different.
- There are return types and parameters different from the parent class.
- Is virtual.
-
- Question 21: To export multidimensional array values, Console.WriteLines (___):
- myArray [1] [3];
- myArray [1,3];
- myArray {1} {3};
- myArray (1), (3);
-
- Question 22: All methods in abstract base class must be declared abstract.
- It's correct
- False
-
- Question 23: Methods that are abstractly declared in the base class must show the deployment at the time of declaration.
-
- It's correct
-
- False
-
- Question 24: Code:
public class B: A {}
-
- Define a class that derives all methods of A.
-
- Define a class that instructs the protected and public methods of A.
-
- Cod
- Both A and B.
- e on error.
-
- Question 25: Suppose that: public class B: A {public B (int i): base (i) {}} compile and run correctly, what can we conclude about constructors in class A?
-
- A constructor takes parameters of type i.
-
- This is just the default constructor.
-
- A constructor takes a parameter of type int.
-
- A and B
-
- Question 26: The classes declared with the sealed keyword cannot be the base class?
- It's correct
- False
-
- Question 27: A method . an exception when the method detects a problem occurs.
-
- Try
-
- Catche
-
- Throw
-
- A and B
-
- Question 28: Exception objects are derived from class?
-
- Try
-
- Catch
-
- Exception
-
- Event
-
- Question 29: An abstract class .
-
- May contain instance variables
-
- May contain a constructor
-
- Can expand another class
-
- All the answers above.
-
- Question 30: A block . with code can throw an exception.
-
- Try
-
- Catch
-
- Exception
-
- A and B
-
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