Testing

A constructor is

• a. Variable

• b. Class

• c. Field

• d. Properties

• e. Method

A constructor

• a. None of the above

• b. Is called when the instance is created

• Does Not exist

A field is a:

• a. Class variable and instance variable

• Local variable and Parameter variable

• Parameter variable and Class variable

All object-oriented programming languages must have the 3 following features:

• Inheritance, association, encapsulation

• Association, inheritance, objects

• Classes, subclasses, superclasses

• state, behavior, identity

• Inheritance, polymorphism, encapsulation

An object that has more than one form is referred to as

• Interface

• Inheritance

• Abstract class

• Polymorhpism

• Encapsulation

Constructors are used to

• Free memory

• To create a sub class

• To build a user interface

• initialize a newly created object

Encapsulation is based on:

• Using global variables

• Hiding deprecated fields that should NOT be removed

• Nesting classes

• Hiding logic that is only used from inside a class

In C#, the _____ keyword is used to access members of the base class from within a derived class.

• virtual

• override

• this

• base

In the following code, what effect does marking the field as static have?

class Repository

{

private static string _connStr;

}

• it cause the value of _connStr to be preserved between method calls.

• It prevents any finalizers for _connStr from running until the app is closing.

• It ensures that all Repository instances share one single copy of _connStr.

• It ensures that all code running on the same thread shares one single thread-local copy of _connStr.

Consider this code:

public static class MyClass

{

What effect does the keyword static have on the class?

}

• It enforces at compile time that the class can contain only static members and types

• It prevents modifications to any field in this class after instantiation.

• It courses an exception to be thrown at run-time if a non-static member of the class is accessed.

• It causes an exception to be thrown at run-time if more than one instance of the class is instantiated.