As used in this Agreement, the term prevailing party means that party whose position is upheld in a final judgment rendered in any litigation, or, if the final judgment is appealed, that party whose position is upheld by the decision of the final appellate body that considers the appeal.
However, the functions of a hub, switch and router are quite different, even if at times they are integrated into a single device. Routers connect two or more logical subnets, which do not necessarily map one-to-one to the physical interfaces of the router. The term layer 3 switch often is used interchangeably with router, but switch is really a general term without a rigorous technical definition. In marketing usage, it is generally optimized for Ethernet LAN interfaces and may not have other physical interface types.
3. Re: Router switch work at which layer. This article is also very good on the subject. http://www.cisco.com/web/about/ac123/ac147/archived_issues/ipj_1-2/switch_evolution.html.