Question 1

BinaryReader and BinaryWriter classes ____.

Accepted Answer

A)   expose only static members
B)   are used to read and write character strings to files
C)   offer streaming functionality oriented toward binary data types
D)   are abstract classes C

Question 2

Which of the following is a static member of the Directory class?

Accepted Answer

A)   Encrypted
B)   AppendText( ) 
C)   Exists( ) 
D)   DirectoryPath( )  C

Question 3

PadRight( )and PadLeft( )methods of the ____________ class can be use to right or left align values.

Accepted Answer

string

Question 4

Prior to writing program statements that access data in a file,you should always check to make sure the file is available using the Available( )method.

Accepted Answer

A) True 
 B)False

Question 5

Archive is a(n)____________ value for the Attributes property of the File class.

Accepted Answer

The answer of Archive is a(n)____________ value for the Attributes...

Question 6

Binary files can not be read using notepad.

Accepted Answer

A) True 
 B)False

Question 7

A structure is a special form of value type that supplies alternate names for the values of an underlying primitive type.

Accepted Answer

A) True 
 B)False

Question 8

Assume that an object of the DirectoryInfo is instantiated using the identifier dirListing.How could you retrieve the names of all files stored in dirListing that have a file extension of .cs?

Accepted Answer

A)   foreach(FileInfo fil in dirListing.GetFiles("*.cs") ) 
B)   foreach(FileInfo fil in dirListing.GetFiles("cs") ) 
C)   foreach(DirectoryInfo dirListing in File.GetFiles("*.cs") ) 
D)   foreach(DirectoryInfo dirListing in File.GetFiles("cs") )

Question 9

The FileDialog class has a property called ____,which is used by both the OpenFileDialog and SaveFileDialog classes to set or get the name of the file using a dialog box.

Accepted Answer

A)   Text
B)   Name
C)   FileName
D)   ID

Question 10

If an invalid path is listed in the constructor for the StreamWriter object,you will be prompted to reenter the file name.

Accepted Answer

A) True 
 B)False

Question 11

If you use Visual Studio and include a reference to the System.IO namespace,IntelliSense provides helpful information while you are developing your file application.

Accepted Answer

A) True 
 B)False

Question 12

In order to invoke the Copy( )method of the File class,instantiate an object of the File class and send as an argument a filename.

Accepted Answer

A) True 
 B)False

Question 13

To avoid fully qualifying references to objects of the StreamReader class,include a using statement with the System.StreamReader namespace.

Accepted Answer

A) True 
 B)False

Question 14

StreamReader inFile = new StreamReader("name.txt");
while ((inValue = inFile.ReadLine()) != null)
-Using the above segment of code,inValue would be defined as what type of data?

Accepted Answer

A)   StreamReader
B)   int
C)   text
D)   string

Question 15

The keyword ____ can be used to define a scope for an object such that the CLR automatically disposes of,or releases,the resource when the object goes out of scope.

Accepted Answer

A)   scope
B)   area
C)   block
D)   using

Question 16

Objects of streams can be wrapped with _________ objects to improve the speed and performance of file-handling operations.

Accepted Answer

A)   NetworkStream
B)   FileStream
C)   MemoryStream
D)   BufferedStream

Question 17

NET Framework includes the ____________ namespace,which provides basic file and directory support classes.It also contains types that enable you to read and write files and data streams.

Accepted Answer

The answer of NET Framework includes the ____________ namespace,which provides...

Question 18

StreamWriter outputFile = new StreamWriter("someOutputFileName");
StreamReader inputFile = new StreamReader("someInputFileName");
-If you browse using Windows Explorer or Computer,the physical file that already exists before the two statements from above are executed is ____.

Accepted Answer

A)   outputFile
B)   inputFile
C)   someOutputFile
D)   someInputFile

Question 19

The most appropriate programmer-defined enumeration identifier for a card's color that has field values of Red,Blue,Yellow,Black,and Green would be ____.

Accepted Answer

A)   card
B)   CardColor
C)   RedBlueYellowBlackGreen
D)   5Colors

Question 20

A(n)____________ is a special form of value type that supplies names for the values.

Accepted Answer

The answer of A(n)____________ is a special form of value...

Exam 13: Working with Files

BinaryReader and BinaryWriter classes ____.

Which of the following is a static member of the Directory class?

PadRight( )and PadLeft( )methods of the ____________ class can be use to right or left align values.

Prior to writing program statements that access data in a file,you should always check to make sure the file is available using the Available( )method.

Archive is a(n)____________ value for the Attributes property of the File class.

Binary files can not be read using notepad.

A structure is a special form of value type that supplies alternate names for the values of an underlying primitive type.

Assume that an object of the DirectoryInfo is instantiated using the identifier dirListing.How could you retrieve the names of all files stored in dirListing that have a file extension of .cs?

The FileDialog class has a property called ____,which is used by both the OpenFileDialog and SaveFileDialog classes to set or get the name of the file using a dialog box.

If an invalid path is listed in the constructor for the StreamWriter object,you will be prompted to reenter the file name.

If you use Visual Studio and include a reference to the System.IO namespace,IntelliSense provides helpful information while you are developing your file application.

In order to invoke the Copy( )method of the File class,instantiate an object of the File class and send as an argument a filename.

To avoid fully qualifying references to objects of the StreamReader class,include a using statement with the System.StreamReader namespace.

StreamReader inFile = new StreamReader("name.txt") ; while ((inValue = inFile.ReadLine() ) != null) -Using the above segment of code,inValue would be defined as what type of data?

The keyword ____ can be used to define a scope for an object such that the CLR automatically disposes of,or releases,the resource when the object goes out of scope.

Objects of streams can be wrapped with _________ objects to improve the speed and performance of file-handling operations.

NET Framework includes the ____________ namespace,which provides basic file and directory support classes.It also contains types that enable you to read and write files and data streams.

StreamWriter outputFile = new StreamWriter("someOutputFileName") ; StreamReader inputFile = new StreamReader("someInputFileName") ; -If you browse using Windows Explorer or Computer,the physical file that already exists before the two statements from above are executed is ____.

The most appropriate programmer-defined enumeration identifier for a card's color that has field values of Red,Blue,Yellow,Black,and Green would be ____.

A(n)____________ is a special form of value type that supplies names for the values.