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Welcome to the Console IO and Stream Classes MCQs Page

Dive deep into the fascinating world of Console IO and Stream Classes with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Console IO and Stream Classes, a crucial aspect of C# programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Console IO and Stream Classes, 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.

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Check out the MCQs below to embark on an enriching journey through Console IO and Stream Classes. 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 Console IO and Stream Classes. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Console IO and Stream Classes MCQs | Page 4 of 8

Q31.
Which of these classes are used by Byte streams for input and output operation?
Discuss
Answer: (b).InputOutputStream
Q32.
Which of these method/methods are used to read block or array of bytes from the file?
Discuss
Answer: (a).Read()
Q33.
Select the objects of the class TextWriter which is/are not used to perform the write operations to the console?
Discuss
Answer: (c).WriteError()
Q34.
What will be the output of the given code snippet?
static void Main(string[] args)
 {
     Console.Write("c");
     Console.Write("sharp" );
     Console.ReadLine();
 }
Discuss
Answer: (b).c
sharp
Discuss
Answer: (d).All of the mentioned
Q36.
What would be the output of given code snippet?
static void Main(string[] args)
 {
     String a ="i love iostream";
     Console.WriteLine(a.IndexOf('i') + " " + a.IndexOf('e') + " " + a.LastIndexOf('i') + " " + a.LastIndexOf('e'));
     Console.ReadLine();
 }
Discuss
Answer: (d).0 5 7 12
Q37.
What will be the output of given code snippet?
static void Main(string[] args)
 {
     StringBuilder sb = new StringBuilder("hello world");
     sb.Insert(6, "good");
     Console.WriteLine(sb);
     Console.ReadLine();
 }
Discuss
Answer: (c).hello goodworld
Q38.
What will be the output of given code snippet?
static void Main(string[] args)
 {
     string h = "i lovelife";
     string h1 = new string(h.Reverse().ToArray());
     Console.WriteLine(h1);
     Console.ReadLine();
 }
Discuss
Answer: (c).efilevol i
Discuss
Answer: (c).replace() method replaces all instances of a character with new character
Q40.
Which of these classes is used to create an object whose character sequence is mutable?
Discuss
Answer: (b).StringBuilder()
Page 4 of 8

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