In MVC is mandatory to be Map route {controller}/{action}/{id} In This format only..??

Answer:

Its not mandatory to be URL string must be in controller/action/params format.

If User defined in his RouteConfig file like {controller}/{action}/{id} Query string will be controller/action/id.

if user defined in his RouteConfig file like {action}/{controller}/{id} Query string will be
Action/controlleer/id.