Question 1

The Dir class's size method returns a count of the specified file's size in bytes.

Accepted Answer

A) True 
 B)False

Question 2

One limitation within Ruby programming is the inability to redirect STDIN and STDOUT .

Accepted Answer

A) True 
 B)False

Question 3

If you attempt to delete a file or folder that does not exist, or if you try to delete a folder that is not empty, Ruby will ignore the error and substitute an empty file.

Accepted Answer

A) True 
 B)False

Question 4

Which of the mode options opens a file for writing only, overwriting any existing text by placing the pointer at the beginning of the file.

Accepted Answer

A)  w 
B)  w+ 
C)  a 
D)  a+ 
A)  w 
B)  w+ 
C)  a 
D)  a+

Question 5

Which of the following File class methods can be used to determine if a resource is a folder or something else?

Accepted Answer

A)  directory? 
B)  file? 
C)  found? 
D)  type? 
A)  directory? 
B)  file? 
C)  found? 
D)  type?

Question 6

The File class also contains a method named file? , which can be used to determine whether a resource is a file or something else.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following actions occur if you attempt to delete a file or folder that does not exist?

Accepted Answer

A)  Ruby ignores the error and allows the program to continue 
B)  Ruby deletes any files found in the current working directory 
C)  An error is generated and program execution terminates 
D)  None of the above 
A)  Ruby ignores the error and allows the program to continue 
B)  Ruby deletes any files found in the current working directory 
C)  An error is generated and program execution terminates 
D)  None of the above

Question 8

Which of the following is a special variable containing a string that identifies the type of operating system on which a script is executed?

Accepted Answer

A)  RUBY_SYSTEM 
B)  RUBY_PLATFORM 
C)  RUBY_OSTYPE 
D)  RUBY_TYPE 
A)  RUBY_SYSTEM 
B)  RUBY_PLATFORM 
C)  RUBY_OSTYPE 
D)  RUBY_TYPE

Question 9

Which of the following is the Ruby redirection output operator?

Accepted Answer

A)  = 
B)  => 
C)  > 
D)  ^ 
A)  = 
B)  => 
C)  > 
D)  ^

Question 10

RUBY_PLATFORM contains a string that identifies the type of operating system on which a script is executing.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following best describes a special variable?

Accepted Answer

A)  It is a variable specified by the programmers and maintained by Ruby. 
B)  It is a variable automatically created by Ruby but for which the programmer must assign an initial value. 
C)  It is a variable that is automatically created and maintained by Ruby. 
D)  It is a variable that is automatically created by Ruby for its use only. 
A)  It is a variable specified by the programmers and maintained by Ruby. 
B)  It is a variable automatically created by Ruby but for which the programmer must assign an initial value. 
C)  It is a variable that is automatically created and maintained by Ruby. 
D)  It is a variable that is automatically created by Ruby for its use only.

Question 12

Which of the following File class methods can be used to determine if a file has any data in it?

Accepted Answer

A)  length 
B)  size? 
C)  name? 
D)  size 
A)  length 
B)  size? 
C)  name? 
D)  size

Question 13

The operating system, and not Ruby, provides both the > and the redirection operators.

Accepted Answer

A) True 
 B)False

Question 14

RUBY_PLATFORM contains a string that identifies the manufacturer of the operating system on which a script is executing.

Accepted Answer

A) True 
 B)False

Question 15

When executed on UNIX or Linux, Ruby program file and path data must be specified using the backslash character.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following File and Dir methods can be used to delete both files and folders?

Accepted Answer

A)  remove 
B)  delete 
C)  kill 
D)  del 
A)  remove 
B)  delete 
C)  kill 
D)  del

Question 17

Which of the following File class methods can be used to determine if a file or folder exists?

Accepted Answer

A)  location? 
B)  found? 
C)  exist? 
D)  file? 
A)  location? 
B)  found? 
C)  exist? 
D)  file?

Question 18

Which of the mode options opens a file for both reading and writing?

Accepted Answer

A)  r 
B)  r+ 
C)  a 
D)  a+ 
A)  r 
B)  r+ 
C)  a 
D)  a+

Question 19

To determine if a file has any data in it, you can use the File class's size method.

Accepted Answer

A) True 
 B)False

Question 20

By default, a computer sends standard output ( STDOUT ) to the computer's hard drive.

Accepted Answer

A) True 
 B)False

The Dir class's size method returns a count of the specified file's size in bytes.

One limitation within Ruby programming is the inability to redirect STDIN and STDOUT .

If you attempt to delete a file or folder that does not exist, or if you try to delete a folder that is not empty, Ruby will ignore the error and substitute an empty file.

Which of the mode options opens a file for writing only, overwriting any existing text by placing the pointer at the beginning of the file.

Which of the following File class methods can be used to determine if a resource is a folder or something else?

The File class also contains a method named file? , which can be used to determine whether a resource is a file or something else.

Which of the following actions occur if you attempt to delete a file or folder that does not exist?

Which of the following is a special variable containing a string that identifies the type of operating system on which a script is executed?

Which of the following is the Ruby redirection output operator?

RUBY_PLATFORM contains a string that identifies the type of operating system on which a script is executing.

Which of the following best describes a special variable?

Which of the following File class methods can be used to determine if a file has any data in it?

The operating system, and not Ruby, provides both the > and the redirection operators.

RUBY_PLATFORM contains a string that identifies the manufacturer of the operating system on which a script is executing.

When executed on UNIX or Linux, Ruby program file and path data must be specified using the backslash character.

Which of the following File and Dir methods can be used to delete both files and folders?

Which of the following File class methods can be used to determine if a file or folder exists?

Which of the mode options opens a file for both reading and writing?

To determine if a file has any data in it, you can use the File class's size method.

By default, a computer sends standard output ( STDOUT ) to the computer's hard drive.

Ruby Basics

Interacting With Ruby

Working With Strings, Objects, and Variables

Implementing Conditional Logic

Working With Loops

Working With Collections of Data

Working With Regular Expressions

Object-Oriented Programming

Debugging

Ruby on Rails Web Development

Filters

Exam 9: File and Folder Administration

The Dir class's size method returns a count of the specified file's size in bytes.

One limitation within Ruby programming is the inability to redirect STDIN and STDOUT .

If you attempt to delete a file or folder that does not exist, or if you try to delete a folder that is not empty, Ruby will ignore the error and substitute an empty file.

Which of the mode options opens a file for writing only, overwriting any existing text by placing the pointer at the beginning of the file.

Which of the following File class methods can be used to determine if a resource is a folder or something else?

The File class also contains a method named file? , which can be used to determine whether a resource is a file or something else.

Which of the following actions occur if you attempt to delete a file or folder that does not exist?

Which of the following is a special variable containing a string that identifies the type of operating system on which a script is executed?

Which of the following is the Ruby redirection output operator?

RUBY_PLATFORM contains a string that identifies the type of operating system on which a script is executing.

Which of the following best describes a special variable?

Which of the following File class methods can be used to determine if a file has any data in it?

The operating system, and not Ruby, provides both the > and the redirection operators.

RUBY_PLATFORM contains a string that identifies the manufacturer of the operating system on which a script is executing.

When executed on UNIX or Linux, Ruby program file and path data must be specified using the backslash character.

Which of the following File and Dir methods can be used to delete both files and folders?

Which of the following File class methods can be used to determine if a file or folder exists?

Which of the mode options opens a file for both reading and writing?

To determine if a file has any data in it, you can use the File class's size method.

By default, a computer sends standard output ( STDOUT ) to the computer's hard drive.

Ruby Basics

Interacting With Ruby

Working With Strings, Objects, and Variables

Implementing Conditional Logic

Working With Loops

Working With Collections of Data

Working With Regular Expressions

Object-Oriented Programming

Debugging

Ruby on Rails Web Development

Filters