Question 1

In the line of code sw = IO.File.CreateText(fileName) sw is a variable that holds the value of a filespec for an existing text file.

Accepted Answer

A) True 
 B)False

Question 2

Element names are case sensitive.

Accepted Answer

A) True 
 B)False

Question 3

Each line of the file UN.txt contains four pieces of information (name, continent, population in millions, area) about one of the 192 member countries of the United Nations. The first two lines of the file are 
Afghanistan,Asia,28.2,251772 
Albania,Europe,3.2,11100 
What is the first line of the file created by the following code? 
Dim query = From line In IO.File.ReadAllLines("UN.txt") Let data = line.Split(","c)
 Let country = data(0) Let population = 1000000 * CDbl(data(2)) Let area = CDbl(data(3)) 
Let density = population / area 
Select country & "," & density.ToString("N1") 
IO.File.WriteAllLines("NewFile.txt", query)

Accepted Answer

A)  Afganistan,28200000/251772 
B)  Afganistan,112.0 
C)  Afganistan,112.006100757829 
D)  country,density 
A)  Afganistan,28200000/251772 
B)  Afganistan,112.0 
C)  Afganistan,112.006100757829 
D)  country,density

Question 4

When you place the OpenFileDialog control on a form, it will not be visible on the form.

Accepted Answer

A) True 
 B)False

Question 5

The following statements are valid.
Dim filespec As String
filespec = InputBox ("Enter name of file to process:")
Dim sr As IO.StreamReader = IO.File.OpenText (filespec)

Accepted Answer

A) True 
 B)False

Question 6

Opening a file for output means that

Accepted Answer

A)  data may be stored onto the disk. 
B)  data may be read from the disk. 
C)  anything that appears as output on the screen is written to the disk. 
D)  data may be read from and stored onto the disk. 
A)  data may be stored onto the disk. 
B)  data may be read from the disk. 
C)  anything that appears as output on the screen is written to the disk. 
D)  data may be read from and stored onto the disk.

Question 7

Which of the following exceptions will be generated by trying to access a disk drive that doesn't contain a disk?

Accepted Answer

A)  NullReferenceException 
B)  IndexOutOfRangeException 
C)  IO.DirectoryNotFoundException 
D)  OverflowException 
A)  NullReferenceException 
B)  IndexOutOfRangeException 
C)  IO.DirectoryNotFoundException 
D)  OverflowException

Question 8

The value of sr.EndOfStream is True when the end of file accessed by the StreamReader is reached.

Accepted Answer

A) True 
 B)False

Question 9

An individual item of a text file cannot be changed or deleted directly.

Accepted Answer

A) True 
 B)False

Question 10

Elements in an XML document can contain other elements.

Accepted Answer

A) True 
 B)False

Question 11

The acronym CSV stands for "Comma Separated Values".

Accepted Answer

A) True 
 B)False

Question 12

When a file is opened for Append,

Accepted Answer

A)  data may be read starting at the beginning of the file. 
B)  data written to the file replaces the data already there. 
C)  data written to the file are inserted at the beginning of the file. 
D)  data written to the file are added at the end of the file. 
A)  data may be read starting at the beginning of the file. 
B)  data written to the file replaces the data already there. 
C)  data written to the file are inserted at the beginning of the file. 
D)  data written to the file are added at the end of the file.

Question 13

A statement of the form IO.File.WriteAllLines("fileName.txt", numArray) copies the contents of the numeric array numArray into a text file.

Accepted Answer

A) True 
 B)False

Question 14

Comment statements in XML begin with

Accepted Answer

A) True 
 B)False

Question 15

Placing the statement Imports System.IO near the top of the Code Editor (before the Class frmName statement) simplifies file handling by eliminating the need to use the words StreamReader, StreamWriter, and File in your code.

Accepted Answer

A) True 
 B)False

Question 16

The following statement causes the Open dialog box to become visible on the form. OpenFileDialog1.ShowDialog After a file has been selected and the Open button is pressed, the value of OpenFileDialog1.FileName will be the file's filespec; this will include all of the following except

Accepted Answer

A)  the file's drive. 
B)  the file's date of creation. 
C)  the file's path. 
D)  the file's extension. 
A)  the file's drive. 
B)  the file's date of creation. 
C)  the file's path. 
D)  the file's extension.

Question 17

The XML standard was recommended by the World Wide Web Consortium.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following statements is used when you want to add data to the end of an existing text file?

Accepted Answer

A)  Dim sr As IO.StreamReader = IO.File.OpenText("Data.txt") 
B)  Dim sr As IO.StreamReader = IO.File.AddText("Data.txt") 
C)  Dim sw As IO.StreamWriter = IO.File.CreateText("Data.txt") 
D)  Dim sw As IO.StreamReader = IO.File.AppendText("Data.txt") 
A)  Dim sr As IO.StreamReader = IO.File.OpenText("Data.txt") 
B)  Dim sr As IO.StreamReader = IO.File.AddText("Data.txt") 
C)  Dim sw As IO.StreamWriter = IO.File.CreateText("Data.txt") 
D)  Dim sw As IO.StreamReader = IO.File.AppendText("Data.txt")

Question 19

An XML file can contain several root elements.

Accepted Answer

A) True 
 B)False

Question 20

Opening a file for input means that

Accepted Answer

A)  data may be stored onto the disk. 
B)  data may be read from the disk. 
C)  anything that appears as output on the screen is written to the disk. 
D)  data may be read from and stored onto the disk. 
A)  data may be stored onto the disk. 
B)  data may be read from the disk. 
C)  anything that appears as output on the screen is written to the disk. 
D)  data may be read from and stored onto the disk.

In the line of code sw = IO.File.CreateText(fileName) sw is a variable that holds the value of a filespec for an existing text file.

Element names are case sensitive.

When you place the OpenFileDialog control on a form, it will not be visible on the form.

The following statements are valid. Dim filespec As String filespec = InputBox ("Enter name of file to process:") Dim sr As IO.StreamReader = IO.File.OpenText (filespec)

Opening a file for output means that

Which of the following exceptions will be generated by trying to access a disk drive that doesn't contain a disk?

The value of sr.EndOfStream is True when the end of file accessed by the StreamReader is reached.

An individual item of a text file cannot be changed or deleted directly.

Elements in an XML document can contain other elements.

The acronym CSV stands for "Comma Separated Values".

When a file is opened for Append,

A statement of the form IO.File.WriteAllLines("fileName.txt", numArray) copies the contents of the numeric array numArray into a text file.

Comment statements in XML begin with

Placing the statement Imports System.IO near the top of the Code Editor (before the Class frmName statement) simplifies file handling by eliminating the need to use the words StreamReader, StreamWriter, and File in your code.

The following statement causes the Open dialog box to become visible on the form. OpenFileDialog1.ShowDialog After a file has been selected and the Open button is pressed, the value of OpenFileDialog1.FileName will be the file's filespec; this will include all of the following except

The XML standard was recommended by the World Wide Web Consortium.

Which of the following statements is used when you want to add data to the end of an existing text file?

An XML file can contain several root elements.

Opening a file for input means that

An Introduction to Computers and Problem Solving

Visual Basic, Controls, and Events

Variables, Input, and Output

Decisions

General Procedures

Repetition

Arrays

Additional Controls and Objects

Databases

Object-Oriented Programming

Filters

Exam 8: Text Files

In the line of code sw = IO.File.CreateText(fileName) sw is a variable that holds the value of a filespec for an existing text file.

Element names are case sensitive.

When you place the OpenFileDialog control on a form, it will not be visible on the form.

The following statements are valid. Dim filespec As String filespec = InputBox ("Enter name of file to process:") Dim sr As IO.StreamReader = IO.File.OpenText (filespec)

Opening a file for output means that

Which of the following exceptions will be generated by trying to access a disk drive that doesn't contain a disk?

The value of sr.EndOfStream is True when the end of file accessed by the StreamReader is reached.

An individual item of a text file cannot be changed or deleted directly.

Elements in an XML document can contain other elements.

The acronym CSV stands for "Comma Separated Values".

When a file is opened for Append,

A statement of the form IO.File.WriteAllLines("fileName.txt", numArray) copies the contents of the numeric array numArray into a text file.

Comment statements in XML begin with

Placing the statement Imports System.IO near the top of the Code Editor (before the Class frmName statement) simplifies file handling by eliminating the need to use the words StreamReader, StreamWriter, and File in your code.

The following statement causes the Open dialog box to become visible on the form. OpenFileDialog1.ShowDialog After a file has been selected and the Open button is pressed, the value of OpenFileDialog1.FileName will be the file's filespec; this will include all of the following except

The XML standard was recommended by the World Wide Web Consortium.

Which of the following statements is used when you want to add data to the end of an existing text file?

An XML file can contain several root elements.

Opening a file for input means that

An Introduction to Computers and Problem Solving

Visual Basic, Controls, and Events

Variables, Input, and Output

Decisions

General Procedures

Repetition

Arrays

Additional Controls and Objects

Databases

Object-Oriented Programming

Filters