Welcome to the Collection Classes and Mathematical Functions MCQs Page

Dive deep into the fascinating world of Collection Classes and Mathematical Functions with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Collection Classes and Mathematical Functions, a crucial aspect of C# programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Collection Classes and Mathematical Functions, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within C# programming.

Check out the MCQs below to embark on an enriching journey through Collection Classes and Mathematical Functions. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of C# programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Collection Classes and Mathematical Functions. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Collection Classes and Mathematical Functions MCQs | Page 3 of 5

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Q21.

Which is the correct statement about an ArrayList collection that implements the IEnumerable interface?

To access members of ArrayList from the inner class, it is necessary to pass ArrayList class’s reference to it

The inner class of ArrayList can access ArrayList class’s members

The ArrayList class consist of inner class that implements the IEnumerator interface

All of the mentioned

Discuss

Answer: (d).All of the mentioned

Q22.

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?

Stack st = new Stack();
st.Push(10);
st.Push(20);
st.Push(-5);
st.Push(30);
st.Push(6);

IEnumerable e;
e = st.GetEnumerator();
while (e.MoveNext())
Console.WriteLine(e.Current);

IEnumerator e;
e = st.GetEnumerator();
while(e.MoveNext())
Console.WriteLine(e.Current);

IEnumerable e;
e = st.GetEnumerable();
while(e.MoveNext())
Console.WriteLine(e.Current);

None of the mentioned

Discuss

Answer: (b).IEnumerator e;
e = st.GetEnumerator();
while(e.MoveNext())
Console.WriteLine(e.Current);

Q23.

The correct code to access all the elements of the queue collection created using the C#.NET code snippets given below is?

Queue q = new Queue();
q.Enqueue("Harsh");
q.Enqueue('a');
q.Enqueue(false);
q.Enqueue(70);
q.Enqueue(8.5);

IEnumerator e;
e = q.GetEnumerator();
while(e.MoveNext())
Console.WriteLine(e.Current);

IEnumerable e;
e = q.GetEnumerator();
while(e.MoveNext())

IEnumerable e
e = q.GetEnumerable();
while(e.MoveNext())
Console.WriteLine(e.Current);

All of the mentioned

Discuss

Answer: (a).IEnumerator e;
e = q.GetEnumerator();
while(e.MoveNext())
Console.WriteLine(e.Current);

Q24.

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 performance of the program

Discuss

Answer: (d).Collection classes make use of efficient algorithms to manage the collection,hence improving performance of the program

Q25.

Among the given collections which one is I/O index based?

ArrayList

List

Stack

Queue

Discuss

Answer: (a).ArrayList

Q26.

Which among the given statements are correct about the Stack collection?

It can be used for evaluation of expressions

It is used to maintain a FIFO list

Top most element of the Stack collection can be accessed using the Peek()

All of the mentioned

Discuss

Answer: (d).All of the mentioned

Q27.

A HashTable t maintains a collection of names of states and capital city of each state.Which among the following finds out whether “New delhi” state is present in the collection or not?

t.HasValue(“New delhi”);

t.ContainsKey(“New delhi”);

t.HasKey(“New delhi”);

t.ContainsValue(“New delhi”);

Discuss

Answer: (b).t.ContainsKey(“New delhi”);

Q28.

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

BitArray

SortedList

Queue

Stack

Discuss

Answer: (b).SortedList

Q29.

The wrong statements about a HashTable collection are?

It is a keyed collection

It is a ordered collection

It’s not an indexed collection

It implements a IDictionaryEnumerator interface in its inner class

Discuss

Answer: (b).It is a ordered collection

Q30.

Which of these classes contains only floating point functions?

Math

Process

System

Object

Discuss

Answer: (a).Math

Page 3 of 5

Welcome to the Collection Classes and Mathematical Functions MCQs Page

Collection Classes and Mathematical Functions MCQs | Page 3 of 5

Explore more Topics under C# programming

Basics of C# Programming

Data Types,Variables and Operators

Control Instructions

Classes and Objects

Arrays and Strings

Interfaces,Inheritance and Polymorphism

Functions and Subroutines

Indexers and Exception Handling

Console IO and Stream Classes

Delegates and Generics

LINQ

Namespaces and Preprocessors

Miscellaneous Topics

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