Question 1 : In a HashTable Key cannot be null, but Value can be.
1. TRUE
2. FALSE

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Question 2 : Which of the following statements are correct about the Collection Classes available in Framework Class Library?
1. Elements of a collection cannot be transmitted over a network.
2. Elements stored in a collection can be retrieved but cannot be modified.
3. It is not easy to adopt the existing Collection classes for newtype of objects.
4. Elements stored in a collection can be modified only if allelements are of similar types.
5. Elements stored in a collection can be modified only if allelements are of similar types.
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Question 3 : Which of the following is the correct way to find out the number of elements currently present in an ArrayList Collection called arr?
1. arr.Count
2. arr.GrowSize
3. arr.MaxIndex
4. arr.Capacity
5. arr.UpperBound
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Question 4 : Suppose value of the Capacity property of ArrayList Collection is set to 4. What will be the capacity of the Collection on adding fifth element to it?
1. 4
2. 8
3. 16
4. 32
5. 64
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Question 5 : Which of the following is NOT an interface declared in System.Collections namespace?
1. IComparer
2. IEnumerable
3. IEnumerator
4. IDictionaryComparer
5. IDictionaryEnumerator
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Question 6 : 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?
1. t.ContainsKey(''Kerala'');
2. t.HasValue(''Kerala'');
3. t.HasKey(''Kerala'');
4. t.ContainsState(''Kerala'');
5. t.ContainsValue(''Kerala'');
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Question 7 : How many enumerators will exist if four threads are simultaneously working on an ArrayList object?
1. 1
2. 2
3. 3
4. 4
5. Depends upon the Project Setting made in Visual Studio.NET.
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