Deck 9: Files, Printing, and Structure

Question 1

To left justify the columns in the String.Format method, use preceding the column width.

A) a + sign
B) an & symbol
C) a - sign
D) a # symbol

Answer 1

C

Question 2

Identify the following statements which will: Format a string to contain the word "Name" in a column of 20 characters wide, followed by the word "Address" in a second column, also 20 characters wide.

A) String.Format("{0, 20}{1, 20}", "Name", "Address")
B) String.Format("{ 20}{ 20}", "Name", "Address")
C) String.Format(20, 20, "Name", "Address")
D) String.Format(20, 40, "Name", "Address")

Answer 2

A

Question 3

Which of the following code segments will read the following two lines from addressFile and place the data in two variables named strName, and strCity? Bob Johnson
Somewhere USA

A) Dim addressFile As System.IO.StreamReader addressFile = System.OpenText("address.txt")
StrName = addressFile.ReadLine()
StrCity = addressFile.ReadLine()
AddressFile.Close()
B) Dim addressFile As System.IO.StreamReader addressFile = System.IO.File.OpenText("address.txt")
StrName = addressFile.ReadLine()
StrCity = addressFile.ReadLine()
AddressFile.Close()
C) Dim addressFile As System.IO.StreamReader addressFile = OpenText("address.txt")
StrName = ReadLine(addressFile)
StrCity = ReadLine(addressFile)
Close()
D) Dim addressFile As System.IO.StreamReader addressFile = System.IO.File.OpenText("address.txt")
StrName = addressFile.Input()
StrCity = addressFile.Input()
Close()

Answer 3

B

Question 4

Visual Basic allows you to use a(n) statement to eliminate the need to prefix class names with their namespace names.

A) Include
B) With
C) Inherits
D) Imports

Question 5

Which of the following statements are not true about text files?

A) contains plain text
B) cannot be viewed with an editor such as Notepad
C) is the simplest type of data file
D) known as a sequential-access file

Question 6

When the PrintDocument control's Print method is executed, it triggers the ______event.

A) Printer
B) PrintDoc
C) PagePrint
D) PrintPage

Question 7

This control is used to display a standard Windows Open dialog box.

A) OpenDialog
B) OpenFileDialog
C) OpenWindow
D) OpenWindowDialog

Question 8

The StreamReader object's ______is used to determine when the end of the file has been reached.

A) EndOfStream property
B) Poke method
C) EOF flag
D) FileEnd flag

Question 9

The ___method displays a dialog window when selecting a file that you want to open.

A) DisplayDialogControl
B) DisplayDialog
C) ShowDialog
D) ShowControl

Question 10

The StreamWriter's CreateText method will _____________.

A) create a new file or replace an existing one
B) append text at the end of the existing file
C) insert text at the beginning of the file
D) maintain the data for an existing file

Question 11

When a file is selected from an Open dialog box, the path and file name are stored in the control's ______property?

A) Filename
B) PathName
C) File
D) Item

Question 12

All of the following steps must be taken when a file is used by an application except ______.

A) the file must be opened. If the file does not exist, the file will be created.
B) the file must have a fully qualified path when opening the file.
C) data is either written to the file or read from the file.
D) when the application is finished using the file, the file is closed.

Question 13

A file is like a stream of data that must be read from its beginning to its end.

A) direct access
B) binary format
C) sequential access
D) direct format

Question 14

An application must first ______a file before it can be used.

A) write to
B) read from
C) open
D) unlock

Question 15

When opening a file, use this method to determine whether a file exists before you attempt to open it:

A) ExistFile(filename)
B) IO.Exists(filename)
C) System.IO.File.Exists(filename)
D) System.File.Exists(filename)

Question 16

The method writes data to a file, followed by a newline character immediately after the data.

A) PrintLine
B) WriteLine
C) WriteNewLine
D) Write

Question 17

The StreamReader.Read method will _______________________.

A) read the file until an end of line character is reached.
B) read the next character from a file
C) read the contents of the file from the current read position to end of file
D) read the next word from a file

Question 18

Which of the following code segments creates a new file named address.txt, writes the following two lines to the file, and then closes the file? Bob Johnson
Somewhere USA

A) Dim addressFile As System.IO.StreamWriter addressFile = System.IO.File.CreateText("address.txt")
AddressFile.Write("Bob Johnson")
AddressFile.Write("Somewhere USA")
Address.txt.Close()
B) Dim addressFile As System.IO addressFile = System.IO.File.CreateText("address.txt")
AddressFile.WriteLine("Bob Johnson")
AddressFile.WriteLine("Somewhere USA")
AddressFile.Close()
C) Dim addressFile As System.IO.StreamWriter addressFile = System.IO.File.CreateText("address.txt")
AddressFile.WriteLine("Bob Johnson")
AddressFile.WriteLine("Somewhere USA")
AddressFile.Close()
D) Dim addressFile As StreamWriter addressFile = System.IO.File.CreateText("address.txt")
AddressFile.PrintLine("Bob Johnson")
AddressFile.PrintLine("Somewhere USA")
Close()

Question 19

In order to retain data while a program is not running, data must be saved in __________.

A) RAM
B) a ListBox
C) a control
D) a file

Question 20

The following statements describe advantages of the Open and Save As dialog boxes except __________.

A) they help make an application more consistent with other Windows applications
B) they give users the ability to browse for a file
C) these dialog boxes show the user how to create and use files
D) they allow a file to be specified without typing a long path and filename

Question 21

This predefined constant moves the print position forward to the next even multiple of 8 columns.

A) ControlChars.CrLf
B) Tab
C) vbTab
D) Space

Question 22

What does the following line do? Do Until inputFile.EndOfStream

A) Checks to see if the file exists
B) Checks to see if the next input is -1
C) Checks to see if the file is empty
D) Checks to see if all the data in the file has been read

Question 23

This method is used to add more data to the end of an existing file.

A) System.IO.File.OpenText
B) System.IO.File.AppendText
C) System.IO.File.CreateText
D) System.IO.File.OpenNew

Question 24

The FontDialog control allows the user to determine the __________.

A) Font
B) Font Style
C) Font Size
D) all of the above

Question 25

To serve as a visual reminder that the structure or class name is not a variable, structure names and class names should ___________.

A) Begin with uppercase letters
B) Begin with an underscore
C) End with a letter
D) all of the above

Question 26

To change the color of text in a windows form, you could use this.

A) FontDialog control
B) ColorDialog control
C) FontDialog control with the ShowColor property set to True
D) both b and c are correct

Question 27

Reports with columnar data should not use __________.

A) proportionally spaced fonts
B) the Courier New font
C) monospaced fonts
D) all of the above

Question 28

The fields within a structure can be __________.

A) String data types
B) Integer data types
C) an array of Double data types
D) all of the above

Question 29

A structure should be used instead of an array when __________.

A) related items should be grouped together
B) related items are of different data types
C) related items contain strings of different lengths
D) there are a limited number of related items

Question 30

An Open dialog box displays the current folder unless the ______property specifies a different path.

A) InitialFolder
B) DefaultDirectory
C) InitialDirectory
D) DisplayFolder

Question 31

This method places an item of data in a file without terminating the line.

A) WriteLine
B) ReadLine
C) Append
D) Write

Question 32

Which of the following code segments writes the contents of three parallel arrays named strStudentName, intID, and strMajor to a file in the format below? Assume all arrays have the same number of elements. Vince Student, 1234, Computer Science
Nancy Student, 4321, Electrical Engineering

A) For intCount = 0 to strStudentName.Length - 1 outputFile.Write(strStudentName(intCount)
OutputFile.Write(", ")
OutputFile.Write(intID(intCount))
OutputFile.Write(", ")
OutputFile.WriteLine(strMajor(intCount))
Next intCount
B) For intCount =0 to strStudentName.Length - 1 outputFile.WriteLine(strStudentName(intCount) & ", ")
OutputFile.WriteLine(intID(intCount) & ", ")
OutputFile.WriteLine(strMajor(intCount))
Next intCount
C) For intCount = 0 to strStudentName.Length - 1 outputFile.Write(strStudentName(intCount))
OutputFile.Write(", ")
OutputFile.Write(intID(intCount))
OutputFile.Write(", ")
OutputFile.Write(strMajor(intCount))
Next intCount
D) For intCount = 1 to strStudentName.Length outputFile.Write(strStudentName(intCount)
OutputFile.Write(", ")
OutputFile.Write(intID(intCount))
OutputFile.Write(", ")
OutputFile.Write(strMajor(intCount))
Next intCount

Question 33

Which of the following declares a structure data type named Complex, which has two fields named Real and Imaginary, both of which are of type Double?

A) Declare Structure Complex Dim Real As Double
Dim Imaginary As Double
End Declare
B) Structure Complex Dim Real as Double
Dim Imaginary as Double
End Structure
C) Structure As Complex Dim Real As Double
Dim Imaginary As Double
End Structure
D) Dim Structure Complex Dim Real(Double)
Dim Imaginary(Double)
End Structure

Question 34

Which of the following writes a blank line to a text file?

A) outputFile.Write(" ")
B) outputFile.WriteLine.Blank
C) outputFile.WriteLine()
D) outputFile.WriteLine(Blank)

Question 35

The color of text printed by an

A) FontName
B) Style
C) Brushes
D) HPos
E)Graphics.DrawString statement is determined by the __________ argument.

Question 36

This property allows the developer to specify the type of files that will appear in a dialog box.

A) InitialFile property
B) FileFilter property
C) Files property
D) Filter property