1. The first formal description of the "waterfall model" was given by Winston W. Royce in 1970, although the name waterfall was not used until latter. The diagram on the left is often associated with his work, but in reality, Royce proposed it only as an example of what he thought was an inadequate model. His actual approach, as shown on the right, was one that allowed for going back to previous steps as flaws were encountered during testing or requirements changed after the start of design. Requirements Design Product requirements document Sofbrare architecture Implementation Verification Maintenance SYSTEM REQUIREMENTS SOFTWARE REQUIREMENTS ANALYSIS PROGRAM DESIGN CODING TESTING OPERATIONS 1.1. (15 points) Clearly state the similarities and differences of Royce's waterfall model (right) with an iterative agile approach such as Scrum. 60 to 120 words. 1.2. (15 points) Larman describes Scrum as compatible with UP, explain why this is the case, is the model proposed by Royce also compatible with UP, why or why not? 60 to 120 words.