EQuiz - Multiple Choice Test on C # - Part 2

This article presents EQuiz - Multiple Choice Test on C # - Part 2 in a clear, structured format. It helps readers review key concepts, test their understanding, and learn from the material.

Understanding EQuiz

• 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.
  • 1. It's correct
  • 1. False
• Question 24: Code:

  public class B: A {}

  • 1. Define a class that derives all methods of A.
  • 1. Define a class that instructs the protected and public methods of A.
  • 1. Cod
    2. Both A and B.
    3. 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?
  • 1. A constructor takes parameters of type i.
  • 1. This is just the default constructor.
  • 1. A constructor takes a parameter of type int.
  • 1. 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.
  • 1. Try
  • 1. Catche
  • 1. Throw
  • 1. A and B
• Question 28: Exception objects are derived from class?
  • 1. Try
  • 1. Catch
  • 1. Exception
  • 1. Event
• Question 29: An abstract class.
  • 1. May contain instance variables
  • 1. May contain a constructor
  • 1. Can expand another class
  • 1. All the answers above.
• Question 30: A block. with code can throw an exception.
  • 1. Try
  • 1. Catch
  • 1. Exception
  • 1. A and B