Question 1

Syntax errors are indicated only when you compile a program.

Accepted Answer

Visual Studio will identify some syntax errors while you are writing code.These errors will be automatically underlined by a jagged blue line in the IDE.

Question 2

All variables must be declared with a name and a data type before they can be used in a program.

Accepted Answer

This is true, in most programming languages all variables must be declared with a name and a data type before they can be used in a program. This informs the compiler or interpreter how much memory to allocate to the variable, what kind of data can be stored in it, and how the variable can be used in the program.

Question 3

A Form's _________ event occurs just before the Form is displayed on the screen,typically as a result of executing the program.

Accepted Answer

The Load event occurs just before the Form is displayed on the screen, typically as a result of executing the program. This event is commonly used to initialize controls and set default values.

Question 4

You insert comments in your programs to document and improve the readability of your code.

Accepted Answer

Comments are used to explain the code and make it more readable for other programmers who may need to work on the code later.

Question 5

A directs a user to take a specific action.

Accepted Answer

A prompt is a message or dialog box that instructs the user to take a specific action.

Question 6

Variable declarations can begin with:

Accepted Answer

The answer of Variable declarations can begin with:
...

Question 7

A Textbox's _________ property can be used to change the text that's displayed in a Textbox.

Accepted Answer

The Text property of a Textbox is used to set or get the text that is displayed in the Textbox.

Question 8

A comment in Visual Basic begins with:

Accepted Answer

In Visual Basic, comments are denoted by the apostrophe symbol ('). The other choices (A, C, and D) are comment markers used in other programming languages, but not in Visual Basic.

Question 9

Data types already defined in Visual Basic,such as String and Integer,are known as .

Accepted Answer

Data types already defined in Visual Basic such as String and Integer are known as primitive data types. These are basic data types that are built into the language and cannot be broken down into smaller parts. Some examples of primitive data types in Visual Basic include String, Integer, Boolean, Double, and Date.

Question 10

_________ are violations of language rules.

Accepted Answer

Syntax errors are violations of language rules. Logic errors refer to errors in the logic or reasoning of a program, and run-time errors occur while a program is running.

Question 11

Visual Basic is case sensitive;therefore,an identifier named Pencil is not the same as one named pencil.

Accepted Answer

Visual Basic is not case sensitive meaning the identifier Pencil is the same as pencil.

Question 12

The following pair can be used to begin and end a method declaration:

Accepted Answer

Option A is the correct pair to begin and end a method declaration in Visual Basic. "Sub" is short for "Subroutine" and is used to label a block of code that can be executed with a single call. The "End Sub" statement signals the end of the subroutine or the method.

Question 13

What does IntelliSense help you do?

Accepted Answer

IntelliSense helps you simplify writing code by providing suggestions and auto-completion for coding syntax and function names. It does not detect errors or compile your code.

Question 14

The .exe file extension indicates that the file is _________.

Accepted Answer

The .exe file extension is used for executable files, which means they contain a program that can be run on a computer. The other options (extensible, existent, extinct) do not accurately describe the purpose of a file with a .exe extension.

Question 15

Which operator performs string concatenation?

Accepted Answer

The ampersand (&) operator performs string concatenation in many programming languages, including Visual Basic, VBScript, and VBA.

Question 16

Which of the following is a valid declaration in Visual Basic?

Accepted Answer

Declaring a variable in Visual Basic follows the syntax of "Dim [variable name] As [data type]". Therefore, option D is the correct syntax for declaring a variable "number" as an integer. Option A is incorrect syntax, as it doesn't specify a data type. Option B is also incorrect syntax, as "Integer" is not a data type, and the keyword "Dim" is redundant. Option C is also incorrect syntax, as it tries to declare the variable and assign it a value in one line, but again "Integer" is not a data type.

Question 17

A binary operator has _________ operand(s).

Accepted Answer

A binary operator takes two operands to perform the operation.

Question 18

Which of the following is not true about GUIs?

Accepted Answer

Not all GUIs have scrollbars present. The presence of scrollbars depends on the content of the GUI and the size of the window or screen it is being displayed on.

Question 19

When the user interacts with a GUI component,the interaction,known as a(n)_________,causes the program to perform a task by "calling" a method.

Accepted Answer

When the user interacts with a GUI component, such as clicking a button, it causes an event to occur. This event triggers a method to be called and performs the appropriate task. Therefore, the correct answer is C, event. Options A, B, and D are not accurate terms in this context.

Question 20

Which of the following is not a valid identifier?

Accepted Answer

Identifiers cannot have spaces, only letters, numbers, and underscores. "modFirst Welcome" has a space in it, so it is not a valid identifier.

Quiz 3: Introduction to Visual Basic Programming