C# final

Which operators cannot be overloaded?

&& ?: = || ??

What statement regarding the use of the Object class and classes in general is accurate? a. The object class contains a constructor, destructor, and two public instance methods b. When you create any child class, no inheritance occurs automatically c. All classes inherit the Object class methods d. Although every class descends from Object, not all objects are Objects.

All classes inherit the Object class methods

*What happens when you declare a property defined in a base class as override in a derived class?* a. The new declaration removes the old declaration at compile time b. The new declaration is used when the compiler deems it appropriate c. The new declaration is eliminated in favor of the old declaration d. The new declaration overrides and hides its counterpart in the parent class

The new declaration overrides and hides its counterpart in the parent class

An ____ method has no method statements

abstract

in "public class myClass", public is the class ______ ______

access modifier

Totals that are summed one at a time in a loop are known as what type of totals? a.decremented b.derived c.incremented d.accumulated

accumulated

An ______ parameter is an argument within a method call

actual

The ____ of a derived class are all the superclasses from which the subclass is derivced

ancestors

An ____ is a group of code modules compiled together to create a program

assembly

{get; set;} is an ____ _______ property

auto-implemented

A ____ field has a property coded for it

backing

*What keyword always refers to the superclass of the class in which you use it?* a. parent b. super c. base d. upper

base

A superclass is a ____ class

base

______ rules determine the best overloaded method to execute based on the method call's arguments

betterness

Code _____ is unnecessarily long or repetitive statements

bloat

A ____ method is invoked by another method

called

Besides being known as a class client, what is a class that instantiates objects of another prewritten class known as? a.a class state b.a class instantiation c.a class user d.a server class

class user

A parameterless constructor is the ______ constructor

default

What kind of constructor takes no arguments whatsoever? a. construct array b. default constructor c. object constructor d. construct initializer

default constructor

~Employee( ) is a _____ in the Employee class

destructor

If negative is returned from CompareTo( ), the instances is ____ than the compared object

less

A _____ _____ is a method in another method that can only be called from the containing method

local function

A ______ _______ is a group of files containing methods that work together to create an application

multifile assembly

*What is the term used to describe the calling of a method from within another method?* a. nested method calling b. method children c. method cascading d. interleaved method calling

nested method calling

What keyword is an alias for the System.Object class? a. base b. super c. object d. parent

object

An overloaded operator is used to use operators between _____

objects

*What type of parameter to a method will have a value automatically supplied if you do not explicitly send one as an argument?* a. actual parameter b. default parameter c. optional parameter d. value parameter

optional

An ______ parameter allows a default value to be supplied if one is not explicitly sent as an argument

optional

*What modifier is used to indicate that a parameter is used for output?* a. ref b. params c. get d. out

out

*What accessibility modifier limits method access to the class that contains the method?* a. internal b. protected c. protected internal d. private

private

A _____ method limits access to its containing class

private

A member of a class that provides access to a field of a class is referred to as what? a. property b. explicit parameter c. reference type d. implicit parameter

property

_____ fields and methods can be used in their own class or any of its child classes

protected

How do you make a parameter optional?

providing a value for it in the method declaration

A _____ method allows unlimited access by any class

public

_____ describes a method that calls itself

recursive

*What type of parameter requires that the argument used to call the method must have an assigned value?* a. formal b. optional c. output d. reference

reference

A ____ type holds a memory address

reference

A ______ is a memory address

reference

______ ______ occurs when 2 reference type objects refer to the same object

reference equality

A ____ class cannot be extended

sealed

A method's _____ includes its name and parameter list

signature

*What keyword modifier indicates that a method can be called by referring to the class rather than an object from the class?* a. static b. nonstatic c. protected d. internal

static

A _____ method is called without an object reference and can be called without any arguments in its own class

static

_____ classes are not intended to be instantiated (only containing _____ members and classes) and cannot be extended

static

A method's name and parameter list both constitute what component of the method? a.The method stamp b.The method's type c.The return type for the method d.The method's signature

the method's signature

What are the set of attributes of an object's instance variable known as? a.The object's state. b.The object's relationship. c.The object's fields. d.The object's class instantiation.

the object's state

What reference is passed implicitly and invisibly to every instance method and property accessor? a.object b.static c.this d.use

this

_____ is the inheritance feature where a child inherits all the members of its ancestors

transitive

t/f - A method declared abstract must be overridden

true

t/f - CoffeeOrder[] coffeeArray = new CoffeeOrder[50] reserves enough memory for 50 CoffeeOrder objects

true

t/f - an overloaded operator must be static

true

*What type of parameter requires you to indicate the parameter's type and name, and the method receives a copy of the value passed to it?* a. value parameter b. reference parameter c. input parameter d. output parameter

value parameter

*A formal parameter that receives a copy of the value passed to it is an example of what type of parameter?* a. input b. reference c. output d. value

value(???)

*In the event that a method that should be overridden in a child class has its own implementation, what should you declare the base class method to be?* a. virtual b. abstract c. static d. valid

virtual

A method must have the ____ keyword to be overridden by a method in a child class

virtual

What method can you use to return a unique hash for different objects, so long as you explicitly implement it in a derived class? a.ToHash( ) b.GetHashGen( ) c.CalcHash( ) d.GetHashCode( )

GetHashCode( )

What interface in C# contains the definition for the CompareTo() method that compares one object to another and returns an integer? a.ICompareTo b.CompareTo c.IComparable d.Comparable

IComparable

Where are the data components of a class that differ for each object stored? a. Inside of instance variables b. In variable unit states c. Inside parent object relationships d. Inside constants

Inside of instance variables

What happens when a method overrides another method? a.It takes precedence over the original method, hiding it b.It extends the original method, adding additional functionality c.It overloads the original method, allowing for varying parameters d.It instantiates that method and takes over its properties

It takes precedence over the original method, hiding it.

*When declaring a method, how any params keywords are permitted?* a. There is no limit to the use of the keyword b. Only as many as there will be arguments c. Two, provided there is a nested method d. Only one params keyword is permitted.

Only one params keyword is permitted.

*When can a method be called with fewer arguments than exist in the parameter list for the method?* a. Only when the parameters are marked as non-critical parameters b. Only when default arguments are defined for the method c. Only when scope relaxation is used to allow global variables d. Only when value parameters are passed by other parts of the program

Only when default arguments are defined for the method

*When a variable or constant is required by multiple methods in a GUI program, where should it be defined?* a. Inside a nested method shared by both methods b. Outside of the methods, but inside of the Form class shared by both method c. Inside one of the methods used by the GUI d. Inside of an inherited class.

Outside of the methods, but inside of the Form class shared by both methods

How do protected & private classes differ?

Protected classes can be accessed by any classes derived from that class using inheritance. Private classes can only be accessed by itself

Why do event-driven GUI programs sometimes require fewer coded loops than their counterpart console applications? a .A GUI's properties removes the need for some loops b.GUI programs have better loop performance and can benefit more from loop fusion c.A GUI program can utilize loop nesting, while a console program cannot d.Some events are determined by the user's actions when the program is running.

Some events are determined by the user's actions when the program is running.

An _____ is a collection of abstract methods that can be used by any class

interface

What class access modifier should you utilize to limit access to the assembly (a group of code modules compiled together) to which the class belongs? a. internal b. protected c. private d. public

internal

An _____ object calls an instance method

invoking

What statement regarding the use of destructors is accurate? a. A destructor performs actions when a class is instantiated b. To declare a destructor, you must use a dash - followed by the class name c. You cannot provide any arguments to a destructor d. A destructor must be explicitly created

You cannot provide any arguments to a destructor

*To more easily incorporate methods into a program, it is common practice to store methods in their own classes and files. Then you can add them into any application that uses them. What is the resulting compound program called?* a. a compound interface b. a hid implementation c. a hid assembly d. a multifile assembly

a multifile assembly

_____ is using an object within another object

composition

What keyword can be used to create a named identifier for a memory location whose contents cannot change? a. static b. const c. fix d. final

const

A ____ is a method that creates an instance of an object

constructor

As an alternative to repeating code in multiple constructors, what can be used to indicate that another instance of a class constructor should be executed before any statements in the current constructor body? a. parameterless constructor b. default constructor c. constructor initializer d. value constructor

constructor initializer

public Coffee(int orderNumber) : this (orderNumber, "no flavor") is an example of a ____ _____

constructor initializer

What command can be used from the Developer Command Prompt in order to compile a C# program? a. c#-compile b. gcc-c# c. csharpc d. csc

csc

If 0 is returned from CompareTo( ), the instances is ____ to the compared object

equal

t/f - A method declared virtual must be overridden

false

t/f - CoffeeOrder[] coffeeArray = new CoffeeOrder[50] constructs 50 CoffeeOrder objects

false

t/f - When you create an array of objects, the array holds the actual value of each of the objects.

false

t/f - ref, out, and params can have default values

false

What is another name used for instance variables in order to help distinguish them from other variables you might use? a. states b. relationships c. instantiations d. fields

fields

A ______ parameter is a parameter in a method header that accepts a value

formal

_____ classes depend on field names from their parent classes because they are prone to errors

fragile

A readonly property has a ____ accessor, but not a ____ accessor

get; set

Most often, an instance of a class is destroyed when it ____________

goes out of scope

If positive is returned from CompareTo( ), the instances is ____ than the compared object

greater

A ____ ____ is a number that should uniquely identify an object

hash code

"public class myClass" is a class _____

header or definition

_____ a parent class member is overriding it in a derived class

hiding

What kind of programming language allows you to use a vocabulary of reasonable terms such as "read," "write," or "add" instead of the sequence of on/off switches that perform these tasks? a.low-level b.machine-level c.high-level d.switch-level

high-level

A parameter that is undeclared and that gets its value automatically is considered to be what type of parameter? a.property b.implicit c.explicit d.instance

implicit

An ___ reference conversion happens when a derived class object is assigned to its ancestor's data type

implicit

An ____ parameter is undeclared and gets its value automatically

implicit

When using arithmetic operations with operands of dissimilar types, an automatic conversion of nonconforming operands to a unifying type occurs. What is this conversion process called? a. level cast b. implicit cast c. explicit cast d. manual cast

implicit cast

Using private fields within classes is an example of what feature found in all object-oriented languages? a. overloading b. inheritance c. information hiding d. polymorphism

information hiding

_____ _____ describes a class's data being private and changed only by its own methods

information hiding

An ____ is a data type, like a class, that is a collection of empty abstract methods that can be used by any class

interface