Question 1 : Which operator among the following is used to perform the operation of boxing, unboxing, reference and identity conversions?
1. is
2. as
3. typeof
4. all of the mentioned
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Question 2 : Which operator among the following supports the operation of conversion at runtime without generating the exceptions?
1. is
2. as
3. typeof
4. all of the mentioned
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Question 3 : Select the Keyword which supports the run time type identification:
1. is, as
2. as, typeof
3. Both is, as & as, typeof
4. Only is, as
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Question 4 : Select the statement which are correct about RTTI(Runtime type identification):
1. It allows the type of an object to be determined during program execution
2. It tells what type of object is being referred to by a base class reference determined by RTTI
3. Helps in prevention of an invalid cast exception in advance
4. All of the mentioned
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Question 5 : Which mechanism among the following helps in identifying a type during the execution of a program?
1. Reflection
2. Runtime type ID
3. Both Reflection & Runtime type ID
4. None of the mentioned
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Question 6 : Which method will be used to copy content from one array to another array?
1. Copy()
2. copy()
3. Both Copy() & copy()
4. None of the mentioned
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Question 7 : Which among the following is the wrong way to define and initialize an array of 4 integers?
1. int[] a = {25, 30, 40, 5}
2. int[] a; a = new int[3] a[0] = 25 a[1] = 30 a[2] = 40 a[3] = 5
3. int[] a a = new int[4]{25, 30, 40, 5}
4. int[] a a = new int[4] a[0] = 25 a[1] = 30 a[2] = 40 a[3] = 5
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Question 8 : Choose the correct statement about the IComparer interface in C#:
1. The IComparer is in System.Collections.Generic
2. It defines a generic form of Compare()
3. Only The IComparer is in System.Collections.Generic
4. Both The IComparer is in System.Collections.Generic & It defines a generic form of Compare()
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Question 9 : Choose the correct statement about the IComparer interface in C#:
1. The IComparer interface is in System.Collections
2. It defines a method called Compare(), which compares the values of two objects
3. Both The IComparer interface is in System.Collections & It defines a method called Compare(), which compares the values of two objects
4. None of the mentioned
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Question 10 : Select the interfaces implemented by array class:
1. ICloneable, ICollection
2. IEnumerable, IStructuralComparable, IStructuralEquatable
3. ICloneable, ICollection, IList
4. Only IEnumerable, IStructuralComparable, IStructuralEquatable & ICloneable, ICollection, IList
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