questions | StudyNotes24

1. Which of the following are Logical operators in C#.NET? 1.&& 2.|| 3.! 4.Xor 5.%

A. 1, 3, 4

B. 1, 2, 3

C. 3, 4, 5

D. 2, 4, 5

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2. Which of the following are NOT Relational operators in C#.NET? 1.>= 2.!= 3.Not 4.<= 5.<>=

A. 2, 4

B. 1, 3

C. 4, 5

D. 3, 5

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3. Which of the following are the correct ways to increment the value of variable a by 1? 1. a ; 2.a = 1; 3.a 1; 4.a = a 1; 5.a = 1;

A. 2, 4

B. 1, 3

C. 4, 5

D. 3, 5

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4. Which of the following is NOT a Bitwise operator in C#.NET?

A. <<

B. &

C. ^

D. |

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5. Which of the following is NOT an Assignment operator in C#.NET?

A. /=

B. =

C. =

D. *=

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6. Which of the following is the correct output for the C#.NET code snippet given below? Console.WriteLine( / 2 " " 13 % 2);

A. 6.5 0

B. 6.5 1

C. 6 1

D. 6 0

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7. Which of the following statements are correct about the Bitwise & operator used in C#.NET? 1.The & operator can be used to Invert a bit. 2.The & operator can be used to put ON a bit. 3.The & operator can be used to put OF

A. 2, 3, 5

B. 1, 2, 4

C. 3, 4, 5

D. 3, 4

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8. Which of the following statements are correct? 1.The conditional operator (?:) returns one of two values depending on the value of a Boolean expression. 2.The as operator in C#.NET is used to perform conversions between compatible reference

A. 2, 3, 5

B. 1, 2, 4

C. 1, 3, 5

D. 3, 4, 5

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9. Which of the following statements is correct about Bitwise | operator used in C#.NET?

A. The | operator can be used to check whether a bit is ON.

B. The | operator can be used to Invert a bit

C. The | operator can be used to put ON a bit.

D. The | operator can be used to check whether a bit is OFF

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10. Which of the following statements are correct about a namespace used in C#.NET? 1.Classes must belong to a namespace, whereas structures need not. 2.Every class, struct, enum, delegate and interlace has to belong to some or the other namespa

A. 2, 4, 5

B. 1, 3

C. 4 only

D. 3, 5

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11. Which of the following statements is correct about the C#.NET code snippet given below? int d; d = Convert.ToInt32( !( < 20) );

A. A value 1 will be assigned to d

B. A value 0 will be assigned to d

C. The code reports an error.

D. A value -1 will be assigned to d

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12. Which of the following statements is correct about properties used in C#.NET?

A. Properties cannot be overloade

B. Every property must have a set accessor and a get accessor.

C. A property has to be either read only or a write only.

D. Properties of a class are actually methods that work like data members.

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13. If s1 and s2 are references to two strings, then which of the following is the correct way to compare the two references?

A. s1 == s2

B. s1 = s2

C. s1.Equals(s2)

D. strcmp(s1, s2)

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14. Which of the following statement is correct about a String in C#.NET?

A. Methods of the String class can be used to modify the string.

B. A String is mutable because it can be modified once it has been create

C. A String has a zero-based index.

D. A number CANNOT be represented in the form of a String.

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15. Which of the following statements are correct? 1.String is a value type. 2.String literals can contain any character literal including escape sequences. 3.The equality operators are defined to compare the values of string objects as well as

A. 3, 5

B. 1, 3

C. 1, 2, 4

D. 2, 4

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16. Which of the following statements are true about the C#.NET code snippet given below? String s1, s2; s1 = "Hi"; s2 = "Hi"; 1.String objects cannot be created without using new. 2.Only one object will get create

A. 2, 3, 5

B. 1, 2, 4

C. 2, 5

D. 3, 4

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17. Which of the following statements are correct about Structures used in C#.NET? 1.A Structure can be declared within a procedure. 2.Structs can implement an interface but they cannot inherit from another struct. 3.struct members cannot be

A. 2, 3, 5

B. 1, 2, 4

C. 1, 3

D. 2, 4

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18. Which of the following statements are correct? 1.A struct can contain properties. 2.A struct can contain constructors. 3.A struct can contain protected data members. 4.A struct cannot contain methods. 5.A struct cannot contain constan

A. 3, 4

B. 1, 2

C. 3, 5

D. 1, 2, 4

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19. A HashTable t maintains a collection of names of states and capital city of each state. Which of the following is the correct way to find out whether "Kerala" state is present in this collection or not?

A. t.HasValue("Kerala");

B. t.ContainsKey("Kerala");

C. t.ContainsState("Kerala");

D. t.HasKey("Kerala");

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20. How many enumerators will exist if four threads are simultaneously working on an ArrayList object?

A. 2

B. 1

C. 4

D. 3

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