9] [20 points] For the scenario of a student (like you) attaches his/her laptop to campus network and then visits www.google.com to request and receive its home page, you should list the important steps/protocols/mechanisms/settings that occur in the many layers (including the Application, Transport, Network, Data link, and Physical layers) of the Internet protocol stacks of the laptop, the first-hop router, the DNS server, the Google web server, and any involved hosts/routers/switches. For each listed item, you should explain why it may occur during the scenario. If your explanations for the listed item can be justified and are correct, you will get one and only one point for the listed item. You can get up to 20 points for this