What is the difference between “throw ex” and “throw” in C#?

Which of the following types of LINQ?

Which of the following is the correct syntax to group query results using LINQ?

Choose the namespace in which Expression trees are encapsulated?

Which of the following keywords must be used to monitor exceptions handling?

C# has support for strongly-typed function pointers via the keyword?

What namespaces are necessary to create a localized application?

What is the result of the following code? var a = 3; a = 'hello'; var b = a; Console.WriteLine(b);

How do you declare a generic method that takes one parameter which must be a value type?

What will be printed on the console when the following program is executed: public static void Main(string[] args) { bool foo = new bool(); if (foo) Console.WriteLine('True'); else Console.WriteLine('False'); }

What is the purpose of the Task class?