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Visual Basic (VB) .Net Quiz - 3

Description: Visual Basic (VB) .Net Quiz - 3
Number of Questions: 15
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Tags: .net vb
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Which is not a standard dialog box?

  1. ColorDialog

  2. FontDialog

  3. OpenDialog

  4. PrintDialog

  5. ZoomDialog


Correct Option: E
Explanation:

To answer this question, the user needs to know what a dialog box is in the context of computer programming and what each of the options listed represents.

A dialog box is a type of graphical user interface element that allows users to interact with a program by displaying information and receiving input. It usually appears as a separate window or pop-up box within the program.

Now, let's go through each option and explain why it is right or wrong:

A. ColorDialog: This is a standard dialog box used in computer programming. It allows users to select a color from a color palette.

B. FontDialog: This is a standard dialog box used in computer programming. It allows users to select a font and its attributes, such as size, style, and color.

C. OpenDialog: This is a standard dialog box used in computer programming. It allows users to select a file or folder to open or import.

D. PrintDialog: This is a standard dialog box used in computer programming. It allows users to select a printer, page range, and other print settings.

E. ZoomDialog: This is not a standard dialog box used in computer programming. While some programs may have a similar dialog box for zooming in or out of an image or document, it is not a standard element included in most programming languages and frameworks.

Therefore, the answer is: E. ZoomDialog

  1. They are easy to create.

  2. They provide functionality familiar to users.

  3. Developers can create their own versions of Dialog boxes.

  4. Both a and b.

  5. All of the above.


Correct Option: D
Explanation:

To answer this question, we need to understand the purpose of standard dialog boxes. Standard dialog boxes are pre-designed user interface elements that provide commonly used functionality, such as file open and save, print, and font selection. They are used in software applications to provide a consistent user experience and make it easier for users to perform common tasks.

Option A) They are easy to create - This option is correct

Option B) They provide functionality familiar to users - This option is correct because standard dialog boxes are designed to provide familiar functionality to users, which makes it easier for them to use the software application.

Option C) Developers can create their own versions of Dialog boxes - This option is incorrect because the purpose of standard dialog boxes is to provide consistency and familiarity to users.

Option D) Both a and b - This option is correct because standard dialog boxes are easy to use and provide familiar functionality to users.

Option E) All of the above - This option is incorrect because option C is not true.

The correct answer is D, which means both option A and B are correct.

How are dialog boxes implemented in a program?

  1. A dialog box is generated programmatically.

  2. A dialog control is placed in the component tray.

  3. A dialog control is placed on the form.

  4. Both a and b.

  5. All of the above.


Correct Option: D
Explanation:

A dialog box is a secondary window that allows users to perform a command, asks users a question, or provides users with information or progress feedback. Dialog boxes can be implemented in a program in two ways:

  • Programmatically: This is the most common way to implement dialog boxes. In this approach, the dialog box is created and displayed using code. This allows for more flexibility in the design and behavior of the dialog box.
  • Using a dialog control: Some programming languages provide built-in dialog controls that can be used to create dialog boxes. This approach is simpler than creating a dialog box programmatically, but it offers less flexibility.

The correct answer to the question is D. Both a and b. Dialog boxes can be implemented in a program using either of the two methods described above.

Option A: This option is correct because it is possible to create a dialog box programmatically. This is the most common way to implement dialog boxes.

Option B: This option is also correct because some programming languages provide built-in dialog controls that can be used to create dialog boxes. This approach is simpler than creating a dialog box programmatically, but it offers less flexibility.

Option C: This option is incorrect because a dialog control is not always placed on the form. In fact, it is not necessary to place a dialog control on the form at all. The dialog box can be displayed as a separate window.

Option E: This option is incorrect because not all dialog boxes are implemented using both methods. Some dialog boxes are only implemented programmatically, while others are only implemented using dialog controls.

The correct answer is therefore D. Both a and b. Dialog boxes can be implemented in a program using either of the two methods described above.

  1. dal.

  2. dia.

  3. dil.

  4. dlc.

  5. dlg.


Correct Option: E
Explanation:

To answer this question, the user needs to be familiar with the concept of dialog controls and their naming conventions.

Now, let's go through each option and explain why it is right or wrong:

A. dal.: This option is incorrect because "dal" is not a standard prefix for dialog controls. The standard prefix typically used is "dlg" or "dia."

B. dia.: This option is incorrect because "dia" is not a standard prefix for dialog controls. The standard prefix typically used is "dlg" or "dia."

C. dil.: This option is incorrect because "dil" is not a standard prefix for dialog controls. The standard prefix typically used is "dlg" or "dia."

D. dlc.: This option is incorrect because "dlc" is not a standard prefix for dialog controls. The standard prefix typically used is "dlg" or "dia."

E. dlg.: This option is correct. "dlg" is the standard prefix for dialog controls. It is short for "dialog" and is commonly used in programming languages and frameworks.

The Answer is: E. dlg.

  1. ActivateDialog

  2. DisplayDialog

  3. ExhibitDialog

  4. ShowDialog

  5. StartDialog


Correct Option: D
Explanation:

To activate the color dialog box in a software application, the method commonly used is:

The Answer is: D. ShowDialog

Now, let's go through each option and explain why it is right or wrong:

A. ActivateDialog: This option is incorrect because there is no standard method called ActivateDialog to activate the color dialog box. The correct method is ShowDialog.

B. DisplayDialog: This option is incorrect because there is no standard method called DisplayDialog to activate the color dialog box. The correct method is ShowDialog.

C. ExhibitDialog: This option is incorrect because there is no standard method called ExhibitDialog to activate the color dialog box. The correct method is ShowDialog.

D. ShowDialog: This option is correct. The ShowDialog method is commonly used to activate the color dialog box in software applications. It displays the dialog box and waits for the user to make a selection before returning control to the calling code.

E. StartDialog: This option is incorrect because there is no standard method called StartDialog to activate the color dialog box. The correct method is ShowDialog.

In summary, the correct method to activate the color dialog box is ShowDialog.

The name of the class used to programmatically create a color dialog box is:

  1. Color

  2. ColorBox

  3. ColorDialog

  4. ColorDisplay

  5. ColorDisplayBox


Correct Option: C

AI Explanation

To answer this question, you need to have knowledge of programming and user interfaces. The correct answer is C) ColorDialog.

Explanation:

Option A) Color - This option is incorrect because the Color class is used to represent colors in programming, but it is not used specifically to create a color dialog box.

Option B) ColorBox - This option is incorrect because there is no standard class named ColorBox in programming that is used to create a color dialog box.

Option C) ColorDialog - This option is correct because the ColorDialog class is commonly used in programming to create a color dialog box. This class provides functionality for selecting a color from a predefined set of colors or a custom color picker.

Option D) ColorDisplay - This option is incorrect because there is no standard class named ColorDisplay in programming that is used to create a color dialog box.

Option E) ColorDisplayBox - This option is incorrect because there is no standard class named ColorDisplayBox in programming that is used to create a color dialog box.

The correct answer is C) ColorDialog. This option is correct because the ColorDialog class is specifically designed to create a color dialog box in programming.

The name of the class used to programmatically create a font dialog box is:

  1. Font.

  2. FontBox.

  3. FontDialog.

  4. FontDisplay.

  5. FontDialogBox.


Correct Option: C
Explanation:

To solve this question, the user needs to be familiar with the concept of creating dialog boxes and specifically, the font dialog box.

Now, let's go through each option and explain why it is right or wrong:

A. Font: This option is incorrect because the name "Font" does not indicate that it is specifically used for creating a font dialog box. It may refer to a class related to font manipulation, but not to the creation of a font dialog box.

B. FontBox: This option is incorrect because, similar to option A, the name "FontBox" does not specifically indicate that it is used to create a font dialog box. It may refer to a class related to font manipulation, but not to the creation of a font dialog box.

C. FontDialog: This option is correct. The name "FontDialog" specifically indicates that this class is used to create a font dialog box. It is a common naming convention in programming to use descriptive names for classes, and in this case, "FontDialog" accurately describes the purpose of the class.

D. FontDisplay: This option is incorrect because the name "FontDisplay" does not specifically indicate that it is used to create a font dialog box. It may refer to a class related to font display, but not to the creation of a font dialog box.

E. FontDialogBox: This option is incorrect because the name "FontDialogBox" is not a standard naming convention for the class used to create a font dialog box. The commonly used name is "FontDialog".

Therefore, the correct answer is:

C. FontDialog.

Which OpenFileDialog control property specifies the choices in the "Files of type" dropdown box?

  1. FileName

  2. FileNames

  3. FileType

  4. Filter

  5. FilterIndex


Correct Option: D
Explanation:

To answer this question, the user needs to have knowledge of the OpenFileDialog control and its properties.

The OpenFileDialog control is a common dialog box provided by the .NET framework that allows users to browse and select files from the file system.

Now, let's go through each option and explain whether it specifies the choices in the "Files of type" dropdown box:

A. FileName: This property represents the name of the file selected in the dialog box. It does not specify the choices in the "Files of type" dropdown box.

B. FileNames: This property represents an array of file names selected in the dialog box. It does not specify the choices in the "Files of type" dropdown box.

C. FileType: This property does not exist in the OpenFileDialog control. Therefore, it does not specify the choices in the "Files of type" dropdown box.

D. Filter: This property specifies the filter string that determines the choices in the "Files of type" dropdown box. It allows you to specify the types of files that can be selected in the dialog box based on their extensions.

E. FilterIndex: This property specifies the index of the default filter to display in the "Files of type" dropdown box. It does not specify the choices in the dropdown box itself.

Therefore, the correct answer is:

D. Filter

Which property is the same in the OpenFileDialog and the SaveFileDialog control?

  1. FileName

  2. Filter

  3. InitialDirectory

  4. Both a and b.

  5. All of the above.


Correct Option: E

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) FileName - This option is correct because both the OpenFileDialog and the SaveFileDialog controls have a FileName property. This property allows the user to specify or retrieve the file name and path selected or entered in the dialog box.

Option B) Filter - This option is correct because both the OpenFileDialog and the SaveFileDialog controls have a Filter property. This property allows the user to specify the file types that are displayed in the dialog box.

Option C) InitialDirectory - This option is correct because both the OpenFileDialog and the SaveFileDialog controls have an InitialDirectory property. This property allows the user to specify the initial directory that is displayed in the dialog box.

Option D) Both a and b - This option is incorrect because it only includes the FileName and Filter properties, but does not include the InitialDirectory property.

Option E) All of the above - This option is correct because it includes all three properties: FileName, Filter, and InitialDirectory. All these properties are present in both the OpenFileDialog and the SaveFileDialog controls.

The correct answer is E. All of the above. This option is correct because all three properties - FileName, Filter, and InitialDirectory - are present in both the OpenFileDialog and the SaveFileDialog controls.

Which method is found in both the StreamReader and StreamWriter class?

  1. Close

  2. Peak

  3. Flush

  4. Both a and b.

  5. All of the above.


Correct Option: A
Explanation:

To solve this question, the user needs to have a basic understanding of the StreamReader and StreamWriter classes in .NET.

Option A: Close - This method is found in both the StreamReader and StreamWriter classes. It is used to close the underlying stream and free up any resources associated with it.

Option B: Peek - This method is not found in both the StreamReader and StreamWriter classes. It is only found in the StreamReader class and is used to return the next available character without reading it from the underlying stream.

Option C: Flush - This method is found in both the StreamReader and StreamWriter classes. It is used to flush the buffer and write any remaining data to the underlying stream.

Option D: Both A and B - This option is incorrect because option B is not found in both the StreamReader and StreamWriter classes.

Option E: All of the above - This option is incorrect because option B is not found in both the StreamReader and StreamWriter classes.

Therefore, the correct answer is:

The Answer is: A. Close.

  1. IO

  2. Stream

  3. StreamIO

  4. Both a and b.

  5. All of the above.


Correct Option: B

Which dialog control allows the user to zoom in on a document?

  1. PrintDialog

  2. PrintPreview

  3. PageSetupDialog

  4. Both a and b.

  5. All of the above.


Correct Option: B

Which dialog control has a Document property?

  1. PrintDialog

  2. PrintPreview

  3. PageSetupDialog

  4. Both a and b.

  5. All of the above.


Correct Option: E
Explanation:

The Document property is a property of dialog controls that allows you to access the document that is being printed, previewed, or set up. All three of the dialog controls listed in the question have a Document property. Therefore, the correct answer is E. All of the above.

Explanation for Option A:

The PrintDialog dialog control is used to print a document. The Document property of the PrintDialog dialog control returns a reference to the document that is being printed.

Explanation for Option B:

The PrintPreview dialog control is used to preview a document before it is printed. The Document property of the PrintPreview dialog control returns a reference to the document that is being previewed.

Explanation for Option C:

The PageSetupDialog dialog control is used to set up the page layout for a document. The Document property of the PageSetupDialog dialog control returns a reference to the document that is being set up.

Correct Answer:

The correct answer is E. All of the above. This is because all three of the dialog controls listed in the question have a Document property.

  1. Document

  2. DocumentPage

  3. DocumentPrint

  4. PageDocument

  5. PrintDocument


Correct Option: E
  1. When the PrintDialog control is displayed.

  2. When an assignment is made to the Document property.

  3. The first time the Print method is called.

  4. Every time a page is printed after the Print method is called.

  5. None of the above.


Correct Option: D
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