What is the destination port for the DNS query message? What is the source port of DNS response message?

To what IP address is the DNS query message sent? Is this the IP address of your default local DNS server?

Examine the DNS query message. What "Type" of DNS query is it$?$ Does the query message contain any "answers"?

Examine the DNS response message. How many "answers" are provided? What do each of these answers contain?

Provide a screenshot.

Now repeat the previous experiment, but instead issue the command:

nslookup $-$type$=$NS

mit.edu

Answer the following questions ${?}^5$

$16.$ To what IP address is the DNS query message sent? Is this the IP address of your default local DNS server?

$17.$ Examine the DNS query message. What "Type" of DNS query is it$?$ Does the query message contain any "answers"?

$18.$ Examine the DNS response message. What MIT nameservers does the response message provide? Does this response message also provide the IP addresses of the MIT namesers?

$19.$ Provide a screenshot.

Now repeat the previous experiment, but instead issue the command:

nslookup

www$.$aiit.or$.$kr

bitsy.mit.edu

Answer the following questions $6$ :

$20.$ To what IP address is the DNS query message sent? Is this the IP address of your default local DNS server? If not, what does the IP address correspond to$?$

$21.$ Examine the DNS query message. What "Type" of DNS query is it$?$ Does the query message contain any "answers"?

$22.$ Examine the DNS response message. How many "answers" are provided? What does each of these answers contain?

$23.$ Provide a screenshot.