quiz on c# collection classes

Which among the following is the correct way to find out the number of elements currently present in an ArrayListCollection called arr?

• arr.Capacity

• arr.Count

• arr.MaxIndex

• arr.UpperBound

Which among the following is the correct way to access all the elements of the Stack collection created using the C#.NET code snippet given below?

1. 
   

• 
• 
• 
• None of the mentioned

Which statements among the following are correct about the Collection Classes available in Framework Class Library?

• Elements of a collection cannot be transmitted over a network

• Elements stored in a collection can be modified only if all the elements are of similar types

• Elements stored in a Collection can be retrieved but cannot be modified

• Collection classes make use of efficient algorithms to manage the collection, hence improving the performance of the program

In which of the following collections is the I/O based on a key?

• BitArray

• SortedList

• Queue

• Stack

Which of the following statements are correct about the C#.NET code snippet given below?

• Dissimilar elements like "hello", 8.2, 5 cannot be stored in the same Stack collection.

• Boolean values can never be stored in Stack collection.

• In the fourth call to Push(), we should write "b" in place of 'b'.

• This is a perfectly workable code.

Which of the following is the correct way to access all elements of the Queue collection created using the C#.NET code snippet given below?

• 
• 
• 
• 

Which of the following is NOT an interface declared in System.Collections namespace?

• IComparer

• IDictionaryComparer

• IDictionaryEnumerator

• IEnumerator

Which of the following statements are correct about the Collection Classes available in Framework Class Library?

• Elements of a collection cannot be transmitted over a network.

• Elements stored in a collection can be retrieved but cannot be modified.

• Elements stored in a collection can be modified only if allelements are of similar types.

• They use efficient algorithms to manage the collection, thereby improving the performance of the program.

What will be the output of the following code?

• Compile-time error

• Run time error

• 12

• OneTrue

What will be the output of the following code?

• 12345

• 54321

• Compile-time error

• run-time error