.NET Interview Questions

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Which of the following statements is correct about an interface used in C#.NET?A. If a class implements an interface partially, then it should be an abstract class. B. A class cannot implement an interface partially. C. An interface can contain static methods. D. An interface can contain static data. E. Multiple interface inheritance is not allowed.

Rajesh Singh
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4

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Which of the following can be declared in an interface?Properties Methods Enumerations Events Structures A. 1, 3 B. 1, 2, 4 C. 3, 5 D. 4, 5

Rajesh Singh
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A class consists of two interfaces with each interface consisting of three methods.The class had no instance data. Which of the following indicates the correct size of object created from this class? a) 12 bytes b) 16 bytes c) 0 bytes d) 24 bytes

Rajesh Singh
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6

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Which of the following can be used to declare an interface correctly? a) Properties b) Methods c) Structures d) Events

Rajesh Singh
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5

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Which of the following modifiers is used when an abstract method is redefined by a derived class? a) Overloads b) Override c) Base d) Virtual

Rajesh Singh
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If a class inheriting an abstract class does not define all of its functions then it is known as? a) abstract b) A simple class c) Static class d) None of the mentioned

Rajesh Singh
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4

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What we do For avoiding Sql injection attack?

Sandeep Kumar
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The modifier used to define a class which does not have objects of its own but acts as a base class for its subclass is? a) Sealed b) Static c) New d) abstract

Rajesh Singh
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What is the need of .Net framework ?

Kumar Bhimsen
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How to get only schema of a table in ADO.NET? a. DataAdapter.Fill(Dataset); b. DataAdapter.Schema(Dataset,“TableName”); c. DataAdapter.FillSchema(Dataset); d. DataAdapter.GetSchema(Dataset,”TableName”);

Rajesh Singh
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1

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How to prevent DLL Hell in .net? a. The runtime checks to see that only one version of an assembly is on the machine at any one time. b. NET allows assemblies to specify the name AND the version of any assemblies they need to run. c. The compiler offers compile time checking for backward compatibility. d. It doesn’t.

Rajesh Singh
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1

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You have recently developed a Class named “ShopList”. The class is having Public properties Name, ID, Discount. You need to enable the users of the class to iterate through the ShopList collections. Which of the following code snippet will you use? a. public class ShopList : IEnumerator, IEnumerable { // Class implementation } b. public class ShopList : IBindingList { // Class implementation } c. public class ShopList : IDictionary { // Class implementation } d. public class ShopList : ICollection { // Class implementation }

Rajesh Singh
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What is Method Hiding? a. Creating a new implementation of the method in the derived class with new keyword. b. Restricting the method from being called. c. Creating a new name for the Method in the derived class with new keyword. d. Method Overriding in the derived class.

Rajesh Singh
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If a Class is inheriting an interface then a. Inherit the properties of the interface. b. Contain the same methods from the interface. c. Create an interface object. d. All

Rajesh Singh
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3

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Different ways a method can be overloaded? a. Different Parameter datatypes b. Different number of parameters c. Different order of parameters d. All

Rajesh Singh
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