You create a Visual Basic application that uses the Microsoft Internet Explorer object model. You include the following code in the General Declarations sections of a form-level module: Private oIE As new Internet Explorer.When will Visual Basic instantiate this object? A. When the form is loaded. B. When the form is displayed on the screen. C. When the declaration is executed. D. When the object is first referenced in your code.
Answer: D.
You use Visual Basic to develop a reusable component. To make classes in your project easier to use, you intend to add descriptive text and context-sensitive help for each of the properties, methods, and events in the classes. Which procedure must you follow to add descriptive Help information for each class? A. Open the code Window for the class module. In the procedure Attributes dialog box, enter a description and a HelpcontextID for each procedure. B. Open the code Window for the class module.
Answer: A.
You are asked to use Visual Basic to create a Human Resources application that will maintain, among other things, employee information. In designing application, you delete to encapsulate the business logic into a COM EXE named HRManager.exe. Within the user interface portion of your application, you want to create an instance of the Employee object exposed by HRManager.exe Which two code fragments will instantiate an Employee object variable? (Choose two) A. Set oEmployee = New HRManager.Employee
Answer: A, B.
You use Visual Basic to create a form with an ADO Data control named ADODC1 and a TextBox control named Text1. The TextBox control must be bound every time the form is loaded. You want to dynamically bind data from the CustomerID field to be displayed in the text box. Which code fragment can you use to accomplish this? A. Set Text1.DataSource= "ADODC1" Text1.DataField = "CustomerID" B. Set Text1.DataSource= ADODC1Set Text1.DataField = "CustomerID" C. Text1.DataSource=
Answer: D.
You are using Visual Basic to create an ActiveX control that will provide a banner at the top of the container in which it is placed. When the developer adds your control to a container, you want to set the caption displayed in the lblCaption constituent control to match the name assigned to the control itself. Which code fragment should you use? A. Private Sub UserControl_InitProperties ()On Error Resume Next LblCaption.Caption = Extender.NameEnd Sub B. Private Sub UserControl_AmbientChanged (
Answer: A.
You are using Visual Basic to create an ActiveX control that you want to distribute to other developers. You want to add an About box to your control to show your e-mail address. How can you implement this About box so that it is available in the Properties Window?A. Add a new property page to your control project. Name this page in the Connect Property Pages dialog box. B. Add a new form to your control project. Create a public procedure to show the form, and set its procedure ID to About Box.
Answer: B.
Your Visual Basic application uses a middle-tier business object to store inventory information in a database. The middle-tier object can be created on the same computer as the calling program, or on a remote computer by using DCOM. One of the business rules implemented by this object is that the inventory for an item can never be negative. How should the object inform the user interface when this business rule is broken?A. By using the MsgBox function to show a message to the user. B. By using
Answer: B.
You are using Visual Basic to create a COM DLL. This COM DLL provides customer information to other applications for your company. The COM DLL exposes a customer object with properties representing all information that is needed by these other applications. Internally, your COM DLL uses an object named Row to retrieve customer information from a Microsoft SQL Server database. For increased speed in data access, your customer object exposes a property named Bookmark that can hold a recordset bookmark.
Answer: C.
You create a Visual Basic application that uses conditional compilation to enable and disable elements of functionality. Which two mechanisms can you use to set conditional compilation constants? (Choose two) A. The dim statement. B. The const statement. C. The #const directive. D. The project properties dialog box. E. The project reference dialog box.
Answer: C, D.
You use Visual Basic to create an ActiveX control named MyGrid. Many developers use MyGrid on form in their projects. You have identified some problems in MyGrid and are fixing the bugs. You do not want MyGrid users to need to recompile their projects in order to use the newer version of MyGrid. What must you select in the MyGrid Project Properties dialog box to achieve this?A. Project Compatibility B. Binary Compatibility C. Auto Increment D. No Compatibility
Answer: B.
