Visual Basic 2 Test 1 Chapter 1 & 2
9. What must programs that are run in the CLR be
CLS-compliant
18. Where are Graphics that are added to a project stored
In the Resource folder
42. You can make any form into a parent form by setting which property to True
IsMdiContainer property to True
8. Can a reference type hold a value
It may or may not hold a value
8. What object-oriented programming characteristic allows a single class to have more than one method with the same name but a different argument list
Polymorphism
29. Instead of using Parse to convert a string to a number, what method can you use to convert the numeric value to 0 if the conversion fails
TryParse
30. Which text box event is appropriate for performing field-level validation of numeric data
Validating event
15. What file supplies the graphics to the form at compile time
.resx file
17. The following are true about property procedures: property procedures in a class:
1.) Allow the values of the properties to be accessed 2) May contain a Get 3.) May contain a Set
46. What is the Singleton Pattern
A technique to prevent multiple instances of a class
1. What is the creation of a model of an object, for the purpose of determining the characteristics (properties) and behaviors (methods) of the object
Abstraction
3. What do you use when planning the classes and the necessary properties and methods for an object-oriented program
Abstraction
32. What component can your program uses to display an error message to the user instead of using the message box
An ErrorProvider
6. What is the common language runtime (CLR)
An environment that manages execution of code
11. When a single class has more than one method with the same name, but a different argument list, this is called what type of method
An overloaded method
24. What does a parameterized constructor require
Arguments
26. What objects contain information about parts of a program, such as the company, copyright, language, and product
Assembly Attributes
29. What is the name of the file where you make changes to the tags that contain information about parts of a program (name, version, etc.)
AssemblyInfo.vb
27. What are the assembly attributes that can be retrieved using the My.Application.Info object
AssemblyName, CompanyName, Description, DirectoryPath, Copyright, Trademark, Name, ProductName, Title, and Version
31. When does the Validating event of a text box occur
Before the LostFocus event
34. How can a context menu item share the code in the Click event of a menu item
By adding the context menu item to the Handles clause of the menu's event handler
28. How can you modify these attributes
By editing the AssemblyInfo.vb file
2. What provides services for tasks such as integrating components developed in different languages, handling errors across languages, security, and managing the storage and destruction of objects
CLR
44. What are the options for arranging open child windows
Cascade, TileVertical, TileHorizontal
36. What property does each for and each control have that allows you to assign a context menu to that object
ContextMenuStrip p. 23
43. How do you customize an existing class
Create a new class that inherits from the base class and then add properties and methods to include new capabilities
2. What is sometimes referred to as data hiding
Encapsulation
44. What statement would you use to create your own enumeration
Enum
47. Destroying unused objects and reclaiming memory is called what
Garbage collection
15. What is the advantage of using multi-tiers in a programming application
It allows the program to be more flexible when it is run on different machines
20. What is stored in the .resx project file
It holds pointers to the files in your Resources folder and supplies the resources to the form at compile time. Resources include any graphics elements added to the form such as pictures and icons
28. What happens when you use TryParse instead of Parse and an exception occurs when the parse fails
It returns a o instead of throwing an exception
10. What is a platform-independent set of instructions that is combined with the metadata to form the portable executable (PE) file, which has an .exe or .dll extension
MSIL
11. When your Visual Basic .NET source code is compiled, your code is translated into a platform-independent set of instructions called what
MSIL, Microsoft Intermediate Language
36. Any variable declared inside of a class but outside of a procedure will be what scope
Module-level
38. Any variable declared inside a class, but outside of a procedure or function has which type of scope
Module-level scope.
40. What is MDI an acronym for
Multiple Document Interface
25. What is a new feature of VB.NET 2008 that can be used to provide easy access to information about the computer on which the application is executing
My
42. When you make a new class inherit from an existing class, usually the first statement in the constructor is what
MyBase.New()
23. Do you need to write a destructor for your class
No
18. Is it recommended that you create only Public variables when you create your own class so that all other classes can set and retrieve the values of the variables
No , it is recommended that you use Private for you class variables and Public for your methods.
23. Can the Visual Studio .NET IDE development environment run on machines using Windows 98 or Windows ME
No VB .On machines using Windows 2000, Windows NT , Windows XP, or Vista operating system? Yes Will .NET applications run in Windows 98 or Windows ME even though they cannot be developed there? Yes Will .NET applications run in Windows 2000, Windows NT, Windows XP, & Vista? Yes
35. Are ToolStrips and MenuStrips the same thing
No but they are closely related. The MenuStrip class inherits from the ToolStrip class
33. By default each VB project has a namespace called what
One that matches the project name.
22. What is it called when a constructor has two methods in the class that have the same name but a different list of arguments
Overloading
13. What are the three-tiers in the three tier model used for application design
Presentation tier, Data tier, Business tier
14. To accomplish encapsulation, you will declare all variables in a class as what
Private
34. If you leave off the accessibility modifier (Private, Public, etc.) of a variable declared inside of a class but outside of all subprocedures or functions, what will the variable be by default
Private
13. What is stored in the AssemblyInfo.vb file
Project attributes such as name, version, culture and security
40. Which keyword defines a variable or class that is accessible from anywhere inside this class or any class that inherits from this class
Protected
19. Each form in your project has a resource file and it is saved on disk with the same name as the form file. What is the file extension for a resource file
Resx
7. What is the real purpose of inheritance
Reusability
45. If you want your Window menu item to display a list of open documents (child windows), what must you do
Select the MenuStrip component and assign its MdiWindowListItem property to the Window menu item
26. Microsoft recommends that you use which class when you write code to catch errors in your programs
System.ApplicationException
5. What are the two major parts of .NET
The .NET Framework and the Integrated Development Environment (IDE)
22. In order to run a VB.NET Application on another computer, what must be installed on that computer
The .NET Framework or the ,NET Framework Redistributable
17. When you are distributing your application, what file(s) do you need to be concerned with
The .exe file but not the .pdb file
21. To create a read-only property in a class module, use the ReadOnly modifier and write which portion of the property procedure
The Get procedure
30. What would you use to retrieve and display the assembly attributes
The My.Application.Info object
14. In which folder of your project are all of your compiled exe files stored when you compile and run a program using the debugger
The bin\Debug folder
45. What level does the Enum statement belong to
The namespace or class level
25. What happens when an error occurs (such as a division by 0) when a program is running
The system throws an exception
12. What does the presentation tier refer to in a multi-tier application
The user interface
41. How many parent forms and child forms will an MDI application have
They will always have at least parent form and 1 child form but can have multiple child and multiple parent forms
46. What happens to objects and variables that no longer have any active reference in a program
They will be destroyed by VB.NET's garbage collector
16. What is the Set procedure in a class module used for
To change the value of the property
33. What can context menus be added to
To the form or to any control on the form
31. Which component displays an image in a button that provides a shortcut for menu items
ToolStrip
7. Classes, structures, enumerations, delegates, interfaces, and data types in the library, as well as any data types that you define are referred to as what
Types
21. What operating systems is the .NET Framework Redistributable file (a free download on Microsoft's Web site) available for
Windows 98, Windows Me, Windows NT, Windows 2000, Windows XP, Vista
43. How do you create a child form in code
Write the code to set the MdiParent property of the child form to the parent form in the code of the parent form
10. When you create your own class module, can it be used in multiple projects
Yes
38. Can StatusStips contain more than one StatusLabel
Yes
39. Can you display the date and time in a StatusLabel
Yes
4. Can you modify class properties and methods when you create a new class from an existing class
Yes
41. Can you create a new class from an existing class
Yes
6. Does a method in a derived class override a method in the base class with the same name
Yes
20. What is a constructor
a method that will automatically execute when an object is instantiated.
12. What is the smallest deployable piece of code called
an assembly
4. What does the term, "managed code" refer to
any code that is compiled to run in the CLR
39. What is the lifetime of a namespace variable
as long as the program is running.
37. Where do Status Strips typically appear
at the bottom of a form.
3. What is "Metadata"
data that describes data.
24. After a program has been tested and it is determined that it is ready for use, what is it called when you install it on other computers
deployment P. 13
5. Creating a new class from an existing class is called what
inheritance
37. What are the different types of scopes for variables or constants in VB .NET
module-level , procedure-level, namespace
16. What file holds debugging information from your project
pdb
9. The ability to take on many shapes or forms is called what
polymorphism
27. In a multitier application, error messages for the user must come from which tier
presentation
32. What does the user need to do in order to display a context menu
right-click on an object
35. What is the scope
the area of the program that can "see" a variable or constant.
What is the .NET Framework composed of
the common language runtime (CLR), class libraries, ASP.NET
19. What is the Get procedure in a class module used for
to retrieve a value from a property.
