9. When we convert the Client-Server architectural style to the Peer-to-Peer Architectural style, introduce a new abstraction: Peer. The Peer can be depicted as the following class. requester Peer * we need (d) servicel() service2() serviceN() Based on the peer, suppose that we have two proposals to convert the Client-Server architectural style to the Peer-to-Peer Architectural style. Those two proposals are as following: Proposal 1: "A peer can be either a client or a server." This proposal can be depicted as the figure (a): (2708) 169y dose Proposal 2: "A peer can be a client as well as server." This proposal can be depicted as the figure (b): provider requester Peer Server Client servicel() service2() serviceN() provider um Peerbui (b) Client Server (a) Which proposal will you choose? Please explain why you chose that one. (6 pts) dhow inst (b) vs 12um aslubom IA (s) Stu casqy? ow) oni bashing bashingade 290) menasib JMU owl s35 9194T grit no zu 10. This is a special type of inheritance. In this type of inheritance, implementations of methods in the super cla overwritten with empty bodies in the subclass to make the super class operations "invisible". (5 pts) 99200) 9w ob risriw bnA flame (a) What is the name of this special type of inheritance? Senujounia (b) This special type of inheritance should be avoided. Briefly describe the reasons. Exam