Question 1

Which of the following methods does not belong to the String class?

Accepted Answer

A)  capitalize 
B)  chop 
C)  reverse 
D)  None of the above 
A)  capitalize 
B)  chop 
C)  reverse 
D)  None of the above

Question 2

Concatenation is performed using the & character.

Accepted Answer

A) True 
 B)False

Question 3

Ruby provides the ability to generate random numbers using what method?

Accepted Answer

A)  random 
B)  rand 
C)  r_! 
D)  None of the above 
A)  random 
B)  rand 
C)  r_! 
D)  None of the above

Question 4

In Ruby variable scope is indicated by the first character in a variable's name. The character used to specify a global variable is?

Accepted Answer

A)  $ 
B)  @ 
C)  @@ 
D)  None of the above 
A)  $ 
B)  @ 
C)  @@ 
D)  None of the above

Question 5

Inheritance is an object-oriented process that allows one class to be used as the basis for the definition of another class.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following variable names is invalid?

Accepted Answer

A)  Final Score 
B)  Player# 
C)  @Score 
D)  All of the above 
A)  Final Score 
B)  Player# 
C)  @Score 
D)  All of the above

Question 7

Escape characters provide the ability to embed instructions into text strings that tell Ruby how to format displayed text.

Accepted Answer

A) True 
 B)False

Question 8

Single-quoted strings support both escaping and variable substitution.

Accepted Answer

A) True 
 B)False

Question 9

Objects are partially self-contained entities designed to work with methods and properties stored externally to itself.

Accepted Answer

A) True 
 B)False

Question 10

You can create new strings by multiplying existing strings using the String class's * method.

Accepted Answer

A) True 
 B)False

Which of the following methods does not belong to the String class?

Concatenation is performed using the & character.

Ruby provides the ability to generate random numbers using what method?

In Ruby variable scope is indicated by the first character in a variable's name. The character used to specify a global variable is?

Inheritance is an object-oriented process that allows one class to be used as the basis for the definition of another class.

Which of the following variable names is invalid?

Escape characters provide the ability to embed instructions into text strings that tell Ruby how to format displayed text.

Single-quoted strings support both escaping and variable substitution.

Objects are partially self-contained entities designed to work with methods and properties stored externally to itself.

You can create new strings by multiplying existing strings using the String class's * method.

Ruby Basics

Interacting With Ruby

Implementing Conditional Logic

Working With Loops

Working With Collections of Data

Working With Regular Expressions

Object-Oriented Programming

File and Folder Administration

Debugging

Ruby on Rails Web Development

Filters

Exam 3: Working With Strings, Objects, and Variables

Which of the following methods does not belong to the String class?

Concatenation is performed using the & character.

Ruby provides the ability to generate random numbers using what method?

In Ruby variable scope is indicated by the first character in a variable's name. The character used to specify a global variable is?

Inheritance is an object-oriented process that allows one class to be used as the basis for the definition of another class.

Which of the following variable names is invalid?

Escape characters provide the ability to embed instructions into text strings that tell Ruby how to format displayed text.

Single-quoted strings support both escaping and variable substitution.

Objects are partially self-contained entities designed to work with methods and properties stored externally to itself.

You can create new strings by multiplying existing strings using the String class's * method.

Ruby Basics

Interacting With Ruby

Implementing Conditional Logic

Working With Loops

Working With Collections of Data

Working With Regular Expressions

Object-Oriented Programming

File and Folder Administration

Debugging

Ruby on Rails Web Development

Filters