Chapter Assessment: Building REST APIs

This review covers the web layer of the booking service. It follows a request through Spring MVC, the status codes a controller chooses, and why DTOs keep entities out of the API. It also covers validation, problem details, pages, versions, and OpenAPI documents. The bank holds 24 questions, and each attempt draws ten. Most questions give you a request and a response, such as a 400 with no field names or a version header that returns the wrong body, and ask which part produced it or which change fixes it