What keyword modifier indicates that a method can be called by referring to the class rather than an object from the class?

nonstatic

internal

static

protected

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Question 16 2 pts

A formal parameter that receives a copy of the value passed to it is an example of what type of parameter?

input

value

output

reference

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Question 17 2 pts

What is the return type of the ReadLine() method call?

Object

string

bool

int

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Question 18 2 pts

Under what circumstances will a method receive the actual memory address of a passed array, and have access to the actual values in the array elements?

Only when it is passed by reference.

Only when the array is inherited.

Only when the array is within the method's scope.

Only when it is passed by value.

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Question 19 6 pts

Match each item with a statement below.

A method that calls another method.

A method call that requires an object reference.

A variable that is declared in the current method and is known only to that method.

A parameter that receives a copy of the value passed to it.

Variables that are declared within a class but outside of a method.

A name that includes the class name.

The return type for a method that returns either true or false.

Consists of the data types and parameter names that appear between parentheses in a method header.

A method that is called without an object reference.

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Question 20 2 pts

To ensure that the original value of an argument passed to a method remains unchanged after returning from the method, you should use a reference parameter or an output parameter.

True

False

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Question 21 2 pts

When you use a reference parameter, any passed variable must have an assigned value.

False

True

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Question 22 2 pts

You cannot use the out or ref keywords when passing an array to a method.

True

False

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Question 23 2 pts

On occasion, you might want a method to be able to alter a value you pass to it. What type of parameter should you use in this case?

optional parameter

reference parameter

global parameter

value parameter

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Question 24 2 pts

What modifier is used to indicate that a parameter is used for output?

out

get

params

ref

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Question 25 2 pts

What type of parameter requires that the argument used to call the method must have an assigned value?

formal

optional

output

reference

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Question 26 2 pts

For the sake of convenience, what parameter type can be used when the variable to be passed does not have an assigned value at the time the method is called?

mandatory parameter

value parameter

reference parameter

output parameter

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Question 27 2 pts

How can you avoid throwing an exception during data conversion when a value cannot be converted to an appropriate type?

You can use the Convert() method to force the conversion.

You can use the TryParse() method to attempt conversion, or assign a 0 to the variable if it is not possible.

You can use the Parse() method, which may result in garbage being returned.

You can use the ReadLine() method to convert the data to a string.

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Question 28 2 pts

What should you utilize when you don't know how many arguments you might eventually send to a method?

reference parameter

output parameter

parameter array

value parameter

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Question 29 2 pts

What is a method considered to be when there is a potential for a situation in which the compiler cannot determine what method to use?

polymorphic

hidden

ambiguous

overloaded