Utkal University 2007 M.C.A Computer Aplications Entrance test - Question Paper

General ques.
1. Does C# support multiple-inheritance?

2. Who is a protected class-level variable available to?

3. Are private class-level variables inherited?

4. Describe the accessibility modifier “protected internal”.

5. What’s the top .NET class that every thing is derived from?

6. What does the term immutable mean?
7. What’s the difference ranging from System.String and System.Text.StringBuilder classes?

8. What’s the advantage of using System.Text.StringBuilder over System.String?

9. Can you store multiple data kinds in System.Array?

10. What’s the difference ranging from the System.Array.CopyTo() and System.Array.Clone()?

11. How can you sort the elements of the array in descending order?

12. What’s the .NET collection class that allows an element to be accessed using a unique key?

13. What class is underneath the SortedList class?

14. Will the finally block get executed if an exception has not occurred?¬


15. What’s the C# syntax to catch any possible exception?

Can multiple catch blocks be executed for a single try statement?

16. Explain the 3 services model commonly know as a three-tier application.



Class ques.

1. What is the syntax to inherit from a class in C#?

2. Can you prevent your class from being inherited by a different class?
Can you allow a class to be inherited, but prevent the method from being over-ridden?
3. What’s an abstract class?
When do you absolutely have to declare a class as abstract?
4. What is an interface class?
5. Why can’t you specify the accessibility modifier for methods inside the interface?
6. Can you inherit multiple interfaces?
7. What happens if you inherit multiple interfaces and they have conflicting method names?
8. What’s the difference ranging from an interface and abstract class?.

9. What is the difference ranging from a Struct and a Class?

Earning:   Approval pending.