2 rounds of technical where in 1st round three people will take interview in second round 1 lady took interview

Final will HR discussion. I really wonder 3 different people having hand on only 1 skill expects all skills and expertise from one single person

multilevel inheritance and constructor class Program { class a { public a() { Console.WriteLine("a"); } public virtual void getname() { Console.WriteLine("pooja"); } }

    class b:a
    {
        public b()
        {
            Console.WriteLine("b");
        }
            public override void getname()
            {
                Console.WriteLine("sanjay");
            }
        }
    class c : b
    {
        public c()
        {
            Console.WriteLine("c");

        }
        public override void getname()
        {
            Console.WriteLine("aps");
        }
    }
    class d : c
    {
        public d()
        {
            Console.WriteLine("d");
        }
        public new void getname()
        {
            Console.WriteLine("isgreat");
        }
    }
    public static class Test
    {
        public static void Main()
        {

             a dd = new d();
            dd.getname();
            Console.ReadLine();
        }
    }
    
}

tricky questions on the above program. Memory allocation. Try catch. Benefits of using keyword. Angular module, observals, interceptors. Accessing values from one cmponent in other. Sql- executescaler, sql, index very deep question.