Explain what LINQ is.

LINQ is an acronym for Language Integrated Query, and was introduced with Visual Studio 2008. LINQ is a set of features that extends query capabilities to the .NET language syntax by adding sets of new standard query operators that allow data manipulation, regardless of the data source. Supported data sources are: .NET Framework collections, SQL Server databases, ADO.NET Datasets, XML documents, and any collection of objects that support IEnumerable or the generic IEnumerable interface, in both C# and Visual Basic. In short, LINQ bridges the gap between the world of objects and the world of data.

What is the Global Assembly Cache (GAC)?

The Global Assembly Cache is a machine-wide code cache that is stored in a folder in the Windows directory. It stores the .NET assemblies that are specifically designated to be shared by all applications executed on the system.

Which architecture does a Dataset follow?

A Dataset follows the disconnected data architecture.

What is the difference between trace and debug?

Debug class is used to debug builds while Trace is used for both debug and release builds.

What are the fundamental objects in ADO.NET?

There are two fundamental objects in ADO.NET:

i. DataReader- connected architecture.

ii. DataSet- disconnected architecture.

What are the different components of .NET?

Following are the components of .NET

Common Language run-time
Application Domain
Common Type System
.NET Class Library
.NET Framework
Profiling