Namespaces Questions and Answers
Namespaces in C# are essential for organizing code and preventing naming conflicts in large projects. This article presents Namespaces in C# programming questions with answers that help you understand how namespaces work and how they’re applied in real-world development. Frequently asked in TCS, Wipro, and Capgemini interviews, these programming interview questions with answers cover syntax, nested namespaces, and access modifiers. By practicing these questions, you’ll improve your understanding of structured coding and boost your preparation for technical interviews and C# certification tests.
Namespaces
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30 questions
11. What is the primary purpose of namespaces in C#?
- To improve performance
- To organize code and prevent naming conflicts
- To make code run faster
- To reduce memory usage
12. Which keyword is used to declare a namespace in C#?
- class
- namespace
- using
- import
13. How do you use a class from another namespace without fully qualifying it?
- Using the import keyword
- Using the include directive
- Using the using directive
- It happens automatically
14. What happens if two namespaces contain classes with the same name?
- The code will not compile
- You must use fully qualified names or aliases
- The first namespace used takes precedence
- Visual Studio automatically resolves it
15. Which of the following is the correct way to define a namespace?
- namespace MyNamespace;
- namespace MyNamespace {}
- class namespace MyNamespace
- def namespace MyNamespace
16. What is the global namespace in C#?
- A namespace that contains global variables
- The root namespace containing all other namespaces
- A namespace for global functions
- A special namespace for system classes
17. How can you create a namespace alias in C#?
- alias MyAlias = My.Namespace;
- using MyAlias = My.Namespace;
- namespace MyAlias = My.Namespace;
- import MyAlias = My.Namespace;
18. Which of these is a valid namespace naming convention?
- MyApplication.DataAccess
- my_application_data_access
- MyApplication_DataAccess
- myApplication.dataAccess
19. What is the purpose of the "using static" directive?
- To import all members of a namespace
- To import static members of a class
- To make a class static
- To define static variables
20. How are nested namespaces typically declared?
- namespace Outer { namespace Inner {} }
- namespace Outer.Inner {}
- Both A and B
- Neither A nor B