16 Questions
What is a variable in VB.NET?
A variable is the data name given to a memory location that holds a value during program execution.
What are the naming conventions for variables in VB.NET?
Variable names must start with a letter and can contain digits and alphabets. No special characters are allowed except underscore (_), and reserved words cannot be used as variable names.
How is a variable declared in VB.NET?
The Dim keyword is used to declare a variable, and the datatype of the variable is defined by the As clause.
What is the purpose of the As clause in variable declaration?
The As clause is used to define the datatype of the variable being declared.
What is the general syntax for variable declaration in VB.NET?
The general syntax for variable declaration is: {Dim | Public | Private | Friend | Protected Friend | Static} variable_names [As datatype [=expression]]
What is the role of the value of a variable during program execution?
The value of a variable may change during program execution.
What is the default value of an uninitialized variable of type Integer in VB.NET?
0
What is the default value of an uninitialized variable of type Date in VB.NET?
"12:00:00 am"
What is the default value of an uninitialized variable of type String in VB.NET?
Nothing
What is the default value of an uninitialized variable of type Single in VB.NET?
0
What is the scope of a variable declared using the Private access modifier in VB.NET?
It is accessible in the module, class, or structure in which they are declared.
What is the scope of a variable declared using the Public access modifier in VB.NET?
It is accessible in all procedures of all classes, modules, and structures in the application.
What is the scope of a variable declared using the Static keyword in VB.NET?
They retain their values within the scope of the method in which they are declared.
What is the default access modifier for a variable declared without the As clause in VB.NET?
Object
What is the entity whose value never changes during program execution in VB.NET?
Constant
What keyword is used to declare a constant in VB.NET?
Const
Test your knowledge of basic concepts in VB.NET, including variables, constants, enumeration, operators, comments, decision statements, loop statements, loop control statements, option and import statements, type conversion, and boxing and unboxing.
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