C#

1. Casting from a base type variable to a derived type variable is always safe.

true

false

2. Inheritance (deriving one class from another) is what type of relationship?

is-a

has-a

looks-like-a

acts-like-a

3. Given a class "Person," how would you derive a class "Student" from it?

class Student : Person

class Person : Student

class Student = Person

class Student : class Person

4. If a byte is 8 bits, how many bits are in an int variable?

8

16

32

64

5. A child class has direct access to what fields and methods of its parent?

public

protected

private

public, protected, -and- private

public -and- protected

6. When an instance of a child class is made, what order are the constructors called in?

first the child class, then the base class

only the child class

first the base class, then the child class

only the base class

7. Which of these methods sets up default/optional parameters correctly?

void foo(int x, int y, int z)

void foo(int x = 0, int y, int z)

void foo(int x, int y = 0, int z = 0)

void foo(int x, int y = 0, int z)

8. Which container type is used to store key-value pairs

Dictionary

Linked List

List

Array

int

string

9. In .NET, when you pass parameters by reference, you are...

using pointers like C++

making a copy of the data and passing it to the method

creating a reference type variable on the heap

making an alias of the variable used in calling the method