sending a query at t= 0 seconds. in this question you need to act logically as stub DNS resolver, you do jot need to send any actual DNS queries as thise answer will be irrelevant to the questions. you can assume there is no packet loss and all queries are getting resolved. imagine you need to resolve an A record of www.fiu.edu domain( get IPV4 address that configured for that domain). How many DNS queries you, as a stub resolver will send out?.