Visual Basic

1. Who developed Visual Basic?

• a) Symantec

• b) Ashton-Tate

• c) Microsoft

• d) Sybase

Answer explanation

Explanation: Visual Basic is a programming language and environment developed by Microsoft. Visual Basic first version was published in 1991.

Which of the following statement is used to define a class in visual basic?

• a) Event class statement

• b) Class statement

• c) Form class statement

• d) Event statement

Answer explanation

Explanation: The class statement is used to define a class in visual basic. The class statement begins with public class classname clause and ends with End class clause. Within the class statement, you write the code to tell the form and the object how to react to the user’s action.

Which of the following extension is used to represent the project file in Visual Basic?

• a) .vbp

• b) .vb

• c) .cls

• d) .vvb

Answer explanation

Explanation: The .vbp file extension is used to represent the program file in Visual Basic. .cls is used to save the Class module.

If you keep a variable undeclared, it is automatically taken as to which of the following data type in Visual Basic?

• a) Char

• b) Int

• c) Object

• d) String

Answer explanation

Explanation: Visual basic can create variables “on the fly”. This means that if your code contains undeclared variables, Visual basic creates the variable for you and assigns object data type to it. An undeclared variable is a variable, which does not appear in the declaration statement i.e. the Dim statement.

Which of the following applications can be developed using Visual Basic tool?

• a) Graphical User Interface

• b) Real-time

• c) Character User Interface

• d) All of the mentioned

Answer explanation

Explanation: Visual Basic tool provides an easy way to develop graphical user interface (GUI) applications.

In Visual Basic, which of the following is used for coding single-alternative and dual-alternative selection structures?

• a) Switch-Case block

• b) If…Then…Else statement

• c) function overloading

• d) Recursion

Answer explanation

Explanation: In Visual Basic If…Then…Else statement is used for coding single-alternative and dual-alternative selection structures. The If…Then…Else statement statements provide for a statement block where the condition may be true and another if the condition is false.

In the Visual Basic application, which of the following are listed in a properties window?

• a) Items

• b) Values

• c) Attributes

• d) Objects

Answer explanation

Explanation: Attributes also known as properties are listed in a Properties Window. Attributes are keyword-like tags in which you can specify additional information about entities defined in Visual Basic application. Attributes are saved as assembly’s metadata.

Which of the following is commonly used to perform an immediate action when clicked in Visual Studio?

• a) Button control

• b) Close

• c) End

• d) Exit

Answer explanation

Explanation: Every application should give the user a way to exit the program. Most Windows Application accomplishes this task using the Exit option. In visual basic a button is used for sending an application. It is commonly used to perform immediate action when clicked.

Which of the following displays the list of projects contained in the Visual Basic current solution?

• a) List Window

• b) Project Window

• c) Catalogue Window

• d) Solution Explorer Window

Answer explanation

Explanation: The Solution Explorer Window provides you with an organized view of your projects and their files as well as ready access to the commands that pertain to them. A toolbar associated with this window offers commonly used commands for the item you highlight in this list.

Object respond to an event by writing __________

• a) Defining events

• b) Operations

• c) Defining actions

• d) Event procedures

Answer explanation

Explanation: You tell an object how to respond to an event, by writing event procedures, which is a set of visual basic instructions that are processed only when the event occurs.