Which of the following routes is considered a RESTful configuration for ExpressJS?*2 points/:id/{id}/?id=val/id=val

The RESTful configuration for ExpressJS among the options you provided would be "/:id".

Here's why:

1. "/:id" - This is a RESTful route in ExpressJS. The ":id" is a route parameter that allows you to capture the value in that segment of the URL. For example, if you have a route defined as "/users/:id", and you make a request to "/users/123", ExpressJS will capture "123" as the value for "id".

2. "/{id}" - This is not a valid route in ExpressJS. The correct syntax for route parameters in ExpressJS is ":parameter", not "{parameter}".

3. "/?id=val" - This is not a route, but a query string. Query strings are not part of the route, but are used to pass additional information to the server. They are not considered part of the RESTful route.

4. "/id=val" - This is not a valid route in ExpressJS. The "=" sign is not valid in a route definition. If you want to capture a value, you should use a route parameter like ":id".