Lab5 CN ZAIM
Lab5 CN ZAIM
Lab5 CN ZAIM
Lab4: DNS
IP
1.1 Run nslookup to obtain the IP address of the Web server hosting
www.seecs.nust.edu.pk.
1.2 Run nslookup to determine the authoritative DNS servers for domain
seecs.edu.pk. Provide both the names of these DNS servers and also the IP
addresses of one of the DNS servers.
Computer Networks SEECS, NUST
Lab4: DNS
1.3 Run nslookup to determine the mail servers for seecs.edu.pk. Provide both the
names of these Mail servers and also the IP address of one of these Mail
servers.
1.4 Query the public DNS service provided by Google at 8.8.8.8 to query for the IPv6
address of www.seecs.edu.pk. Provide the IPv6 address. Note how this address
is different from the IPv4 addresses that you were getting for the previous
questions.
ANS:IPV6 address is in HEX while IPV4 is in decimal
Now that we are familiar with nslookup and ipconfig, we’re ready to get down to some serious
business. Let’s first capture the DNS packets that are generated by ordinary Web-surfing activity.
Computer Networks SEECS, NUST
Lab4: DNS
2.2 To what IP address is the DNS query message sent? Use ipconfig to determine the IP
address of your local DNS server. Are these two IP addresses the same?
2.3 What is contained in the flag field of your DNS request and response? Explain
each set bit.
2.4 Find out the IP address of at-least one ROOT name server.
2.5 Find out the fully qualified domain name for IP address 149.171.96.2