C# Programming - Collection Classes

Why C# Programming Collection Classes?

In this section you can learn and practice C# Programming Questions based on "Collection Classes" and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

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Where can I get C# Programming Collection Classes Interview Questions and Answers (objective type, multiple choice)?

Here you can find objective type C# Programming Collection Classes questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

How to solve C# Programming Collection Classes problems?

You can easily solve all kind of C# Programming questions based on Collection Classes by practicing the objective type exercises given below, also get shortcut methods to solve C# Programming Collection Classes problems.

Exercise :: Collection Classes - General Questions

  • Collection Classes - General Questions
1. 

Which of the following statements are correct about an ArrayList collection that implements the IEnumerable interface?

  1. The ArrayList class contains an inner class that implements the IEnumerator interface.
  2. An ArrayList Collection cannot be accessed simultaneously by different threads.
  3. The inner class of ArrayList can access ArrayList class's members.
  4. To access members of ArrayList from the inner class, it is necessary to pass ArrayList class's reference to it.
  5. Enumerator's of ArrayList Collection can manipulate the array.

A. 1 and 2 only
B. 1 and 3 and 4 only
C. 2 and 5 only
D. All of the above
E. None of the above

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

2. 

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

A. 1
B. 3
C. 2
D. 4
E. Depends upon the Project Setting made in Visual Studio.NET.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

3. 

In which of the following collections is the Input/Output index-based?

  1. Stack
  2. Queue
  3. BitArray
  4. ArrayList
  5. HashTable

A. 1 and 2 only
B. 3 and 4 only
C. 5 only
D. 1, 2 and 5 only
E. All of the above

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

4. 

In which of the following collections is the Input/Output based on a key?

  1. Map
  2. Stack
  3. BitArray
  4. HashTable
  5. SortedList

A. 1 and 2 only
B. 2 and 3 only
C. 1, 2 and 3 only
D. 4 and 5 only
E. All of the above

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

5. 

In a HashTable Key cannot be null, but Value can be.

A. True
B. False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.