uppose you would like to know the ip address associated with a website using nslookup. You will first send a DNS query message to your local DNS server with an RTT of 6msecs. The local DNS server forwards this message to the root DNS server with an RTT of 50msecs which returns a list of IP addresses for top-level domain servers responsible of "edu".

A request is then sent to one of these TLD servers with an RTT of 20msecs to finally get to an authoritative DNS server which has the original zone records. The local DNS server fetchs the ip address associated to that website by resending one last time the query message to the authoritative server which responds with the ip address with an RTT of 74msecs. Your browser sends a request to this ip address with an RTT of 49msecs to fetch the base html. What is the total delay?