C SHARP interview questions part 4
C SHARP interview questions part 4
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. What does the following code block defines?
class Gen { T ob; }
Correct Answer is : none of the mentioned
2. What does the following code set defines? public Gen(T o) { ob = o; }
Correct Answer is : InputStream
3. Select the type argument of an open constructed type?
Correct Answer is : MemoryStream
4. Which among the given classes is present in System.Collection.Generic.namespace?
Correct Answer is : UnmanagedMemoryStream
5. Which of these is a correct way of defining generic method?
Correct Answer is : long Length
6. Which of these type parameters is used for generic methods to return and accept any type of object?
Correct Answer is : FileMode.CreateNew
7. Choose the correct way to call subroutine fun() of the sample class? class a{ public void x(int p, double k) { Console.WriteLine("k : csharp!"); }}
Correct Answer is : FileMode.Create
8. What will be the output of the given code snippet?
public class Generic{ Stack stk = new Stack(); public void push(T obj) { stk.Push(obj); } public T pop() { T obj = stk.Pop(); return obj; }}class Program{ static void Main(string[] args) { Generic g = new Generic(); g.push(40); Console.WriteLine(g.pop()); Console.ReadLine(); }}
Correct Answer is : flush()
9. What will be the output of the given code snippet?
public class Generic{ Stack stk = new Stack(); public void push(T obj) { stk.Push(obj); } public T pop() { T obj = stk.Pop(); return obj; }}class Program{ static void Main(string[] args) { Generic g = new Generic(); g.push("Csharp"); Console.WriteLine(g.pop()); Console.ReadLine(); }}
Correct Answer is : ReadByte()
10. Assume 2 columns named as Product and Category how can be both sorted out based on first by category and then by product name?
Correct Answer is : 16 bit
11. Choose the wrong statement about the LINQ?
Correct Answer is : I am a human being
12. Choose the namespace in which the interface IEnumerable is declared?
Correct Answer is : var daysArray = days.ToCharArray().Select(c =>c.Tostring()).ToArray();
13. Can we use linq to query against a DataTable?
Correct Answer is : 45355
14. What will be the output of given code snippet? class Program { static void Main(string[] args) { int[] nums = { 1, -2, 3, 0, -4, 5}; var posNums = from n in nums where n >= 0 select n; foreach (int i in posNums) Console.Write(i + " "); Console.WriteLine(); Console.ReadLine(); }}
Correct Answer is : Compare()
15. Select the namespace which should be included while making use of LINQ operations:
Correct Answer is : TextWriter
16. Select the output for the given code snippet: class Program { static void Main(string[] args) { int[] nums = { 1, -2, 3, 0, -4, 5 }; var posNums = from n in nums where n % 2 ==0 select n; Console.Write("The positive values in nums: "); foreach (int i in posNums) Console.Write(i + " "); Console.WriteLine(); Console.ReadLine(); } }
Correct Answer is : they operate directly on unicode characters
17. Select the output for given code snippet: class Program{ static void Main(string[] args) { int[] nums = { 1, -2, 3, 0, -4, 5 }; var posNums = from n in nums where n > -5 && n < 6 orderby n descending select n; Console.Write("The positive values in nums: "); foreach (int i in posNums) Console.Write(i + " "); Console.WriteLine(); Console.ReadLine(); }}
Correct Answer is : StreamReader
18. Select the output for given code snippet: class Program{ static void Main(string[] args) { int[] nums = { 16, 9, 25}; var posNums = from n in nums where n > 0 select Math.Sqrt(n); Console.Write("The positive values in nums: "); foreach (int i in posNums) Console.Write(i + " "); Console.WriteLine(); Console.ReadLine(); }}
Correct Answer is : flush()
19. Select the output for given code snippet: class Program{ static void Main(string[] args) { int[] nums = {1}; var posNums = from n in nums wheres n > 0 select Math.Max(78, 9); Console.Write("The largest values in nums: "); foreach (int i in posNums) Console.Write(i + " "); Console.WriteLine(); Console.ReadLine(); }}
Correct Answer is : int ReadBlock(char[ ] buffer, int index, int count)
20. Which namespace is mostly preferred for the operation of networking in C#?
Correct Answer is : int Read(char[] buffer, int index, int count)
