VB Dot Net MCQ, VB .Net Online Test 2, Dot Net Question and Answers

Sub Main indicates the entry point of VB.Net program.

Assembly − Specifies that an attribute at the beginning of a source file applies to the entire assembly.

Auto − The charset modifier part in the Declare statement supplies the character set information for marshaling strings during a call to the external procedure. It also affects how Visual Basic searches the external file for the external procedure name. The Auto modifier specifies that Visual Basic should marshal strings according to .NET Framework rules.

Overloads − Specifies that a property or procedure redeclares one or more existing properties or procedures with the same name.

ReadOnly − Specifies that a variable or property can be read but not written.

Structure − Declares the name of a structure and introduces the definition of the variables, properties, events, and procedures that the structure comprises.

Delegate − Used to declare a delegate.

#Region − This directive helps in collapsing and hiding sections of code in Visual Basic files.

SortedList − It uses a key as well as an index to access the items in a list. A sorted list is a combination of an array and a hash table. It contains a list of items that can be accessed using a key or an index. If you access items using an index, it is an ArrayList, and if you access items using a key, it is a Hashtable. The collection of items is always sorted by the key value.

User-defined exception classes are derived from the ApplicationException class.

All of the above options are correct.

Assembly − Specifies that an attribute at the beginning of a source file applies to the entire assembly.

Auto − The charset modifier part in the Declare statement supplies the character set information for marshaling strings during a call to the external procedure. It also affects how Visual Basic searches the external file for the external procedure name. The Auto modifier specifies that Visual Basic should marshal strings according to .NET Framework rules.

MustOverride − Specifies that a property or procedure is not implemented in this class and must be overridden in a derived class before it can be used.

Shared − Specifies that one or more declared programming elements are associated with a class or structure at large, and not with a specific instance of the class or structure.

Module − Declares the name of a module and introduces the definition of the variables, properties, events, and procedures that the module comprises.

Interface − Declares the name of an interface and introduces the definitions of the members that the interface comprises.

If − It uses short-circuit evaluation to conditionally return one of two values. The If operator can be called with three arguments or with two arguments.

Stack − It represents a last-in, first out collection of object. It is used when you need a last-in, first-out access of items. When you add an item in the list, it is called pushing the item, and when you remove it, it is called popping the item.

The System.SystemException class is the base class for all predefined system exception.