Problem4 (30 pts) A. A host at mcs.scsu.edu wants IP address for gaia.cs.umass.edu. Show how DNS name resolution works in this case assuming "recursive" query method. (Your solution must show proper flow graph.) B. You are browsing on "Amazon.com" website to purchase a computer laptop. While you ar browsing through multiple computer configurations and their make, somehow your browser restarted and again connected back to the amazon webpage. In this scenario, give all the client and server states (cookies) with proper client and server interaction flow details