Sr. Developer Interview Questions

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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

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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

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

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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

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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

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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

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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”);

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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.

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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 }

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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.

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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

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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

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How do you prevent a class from being inherited? a. By making the class as Private. b. By making the class as private and using sealed keyword. c. By making the class as protected and using sealed keyword. d. By making the class as Sealed.

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What is the difference between Dispose() and Finalize() methods? a. Dispose() method will remove the resources to a class and Finalize() will release the memory for a class. b. Dispose() method is used for a class and Finalize() method is for a class method. c. Dispose() will be called by programmer explicitly and Finalize() method is called by Garbage Collector implicitly. d. All.

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2. How many default Constructors can a class have? a. 1 b. 2 c. None d. Many

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