C# 10 quiz advanced level

Test description

This test was designed to check the advanced knowledge and coding skills of C# developers who are up-to-date with the latest versions and features in C#. Most of the questions include pieces of code that evaluate your understanding of the latest enhancements in the C# language (up to version 10.0).
Topics: record structs, global using directives, extended property patterns, improvements on lambda expressions, classes and interfaces, dynamic types, CodeDom, extension methods, pattern matching, nullable reference types, slice, tasks, deconstructors.

public class Vehicle
{
    public void BoostSpeed(double boost)
    {
        Console.WriteLine($"Boooost with {boost} km/h.");
    }
}

public class Program
{
    static void Main(string[] args)
    {
        dynamic obj = Activator.CreateInstance(typeof(Vehicle));
        try
        {
            obj.BoostSpeed(120);
        }
        catch (RuntimeBinderException ex)
        {
            Console.WriteLine(ex.Message);
        }
    }
}