C# Programming - Questions and Answers for Competitive Exams | GkSeries

49. The default value for a character type variable is _________.

• [A] false
• [B] null
• [C] -1.
• [D] 0.

Answer: Option [B]

50. ___________ object represents a connection to a data source.

• [A] Database
• [B] DataRecord
• [C] DBConnection
• [D] DataRelations

Answer: Option [C]

51. A number divided by zero is __________ Exception

• [A] ArgumentNull
• [B] InvalidCast
• [C] OverFlow
• [D] Arithmetic

Answer: Option [D]

52. Input can be read from the user using _______ method.

• [A] read
• [B] text
• [C] get
• [D] getdata

Answer: Option [A]

53. Any real word entity is called __________.

• [A] object
• [B] attribute
• [C] characteristic
• [D] class

Answer: Option [A]

54. _________ method converts strings into integer values.

• [A] tryparse
• [B] convert
• [C] concess
• [D] change

Answer: Option [A]

55. _________ is also known for creating Turbo Pascal, a popular language for PC programming

• [A] Hejlsberg
• [B] Dennis ritchie
• [C] Scott Wiltamuth
• [D] Bjarne Stroustrup

Answer: Option [A]

56. In an inheritance chain which of the following members of base class are accessible to the derived class members? 1. static 2. protected 3. private 4. shared 5. public

• [A] 1, 3
• [B] 2, 5
• [C] 3, 4
• [D] 4, 5

Answer: Option [B]

57. Which of the following should be used to implement a 'Like a' or a 'Kind of' relationship between two entities?

• [A] Polymorphism
• [B] Containership
• [C] Templates
• [D] Inheritance

Answer: Option [D]

58. The ___________ namespace includes a number of exception types.

• [A] Argument
• [B] type
• [C] stack
• [D] CLR System

Answer: Option [D]

59. Which of the following keyword is used to change the data and behavior of a base class by replacing a member of a base class with a new derived member?

• [A] new
• [B] base
• [C] overloads
• [D] override

Answer: Option [A]

60. Which of the following will be the correct output for the C#.NET code snippet given below? String s1 = "Nagpur"; String s2; s2 = s1.Insert(6, "Mumbai"); Console.WriteLine(s2);

• [A] NagpuMumbair
• [B] Nagpur Mumbai
• [C] Mumbai
• [D] NagpurMumbai

Answer: Option [D]