Q3. Nslookup is a command to find the DNS resolution.

Sample query is nslookup -type=ns uwindsor.ca 8.8.8.8

This is to find the DNS server name of domain uwindsor.ca usingDNS server 8.8.8.8. If you do not specify the DNS server, then yourlocal DNS server is used. Query for other record types such as A,MX, CNAME are similar. Now answer the following questions.

1. Find ip addresses of mail server and DNS server foruwindsor.ca domain without specify DNS server. Take a screen shotfor your command executions.

2. In question 1, your computer will use your local DNSserver. What is its ip address (it might be ipv6 format:A:B:C:D::E)?

3. Is the answer of question 1 authoritative? Show howto find the ip address of www.uwindsor.ca with an authoritativeanswer (Hint: I remind you the meaning of type=NS in question 1. Ifthe answer is from this server, is it authoritative?). To prove itis authoritative answer, you can start the Wireshark to sniff theresponse packet, in which flags of DNS content will have anauthoritative flag bit. Take a screenshot on the DNS packet inWireshark to witness your authoritative answer.