Multiple choice technology programming languages

Which one is not a valid namespace in .net framework?

  1. System.Data.OleDb

  2. System.Web

  3. System.Data.xml

  4. System.Data.SqlClient

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

.NET Framework namespace conventions follow specific patterns. System.Data.OleDb and System.Data.SqlClient are valid data provider namespaces. System.Web contains core web functionality. However, System.Data.xml doesn't exist - XML-related classes are in System.Xml or System.Xml.Linq. XML functionality is in System.Xml namespace, not under System.Data.