if false explain why these are c# questions and .net

1. T/F Classes are reference types, which means a variable for any given class type can be assigned null

2. T/F Variables that are unique to each given instance of a class are referred to as instance variables

3. T/F static or class level variables are shared among all instances of the class

4. T/F Static methods can only be called from instances of the class

5. T/F Properties allow a programmer to let the compiler do the work of generating set/get methods

6. T/F C# supports multiple inheritance

7. T/F Methods that are designed to be overridden by derived classes should be marked with the virtual keyword

8. T/F An abstract base class allows you to define a function without an implementation, forcing child classes to

implement the method

9. T/F All interface methods are public and virtual by default

10. T/F C# does not allow a class to implement more than one interface

1. T/F The List class provided in C# uses generics

2. T/F A class must implement the IEnumerable interface if it is to be used in a foreach loop

3. T/F Using generic types allows the compiler to check at compile time if an invalid type of object is being used.

4. T/F Limits can be imposed on generic types to ensure they implement an interface, extend a base class, or even

have a default constructor

5. T/F The ICompareable<> interface is used when objects need to be compared to determine if they are less than,

equal or greater than another object of the same type

6. T/F An Interface type can be specified as the type of argument provided to a method.

7. T/F Instead of using generics, you can create a list of type object and rely on polymorphism.

8. T/F An interface can define properties in addition to methods

9. T/F An interface can implement another interface

10. T/F C# does not allow a class to implement more than one interface

1. T/F A static using directive allows you to reference static methods of a class without using the class name prefix.

2. T/F Specifying a default value for a parameter allows you to make the parameter optional

3. T/F The out and ref keywords are ways of allowing a method to return multiple values

4. T/F The Tuple class is designed for making it easy return multiple values from a method

5. T/F To quickly write to a file, use the WriteAllLines from the File class in the System.IO namespace.

6. T/F When reading from text based files, all of the content is treated as strings

7. T/F Exceptions can be caught and handled to prevent your program from crashing by using try/catch blocks

8. T/F When you write a class, you can use exceptions to force callers to deal with problems rather than silently

continuing

9. T/F Type pattern matching allows code to perform different actions based on what type an object is

10. T/F When pattern matching in a switch, you should match from the most general to the most specific