Introduction:
Your laptop’s DHCP configuration specifies the server gherkinworm.tadadadah.net with IP address 103.16.156.24 as the only DNS server. The following is known about this and the other DNS servers that are relevant to this assignment.
The DNS server with IP 57.156.222.141 processes queries by iteration (i.e., it returns a reference to another DNS server). It is authoritative for the domain .in.The other DNS servers it knows about are:
45.20.229.55
145.30.209.141
The DNS server with IP 198.97.190.53 is a root server and knows about all servers that are authoritative for top-level domains.
The DNS server with IP 103.16.156.24 processes queries by recursion. The only other DNS server it knows about is 153.171.68.41.
The DNS server with IP 54.41.96.140 processes queries by iteration (i.e., it returns a reference to another DNS server). It is authoritative for the domain .nz.The only other DNS server it knows about is 146.146.116.122.
The DNS server with IP 145.30.209.141 processes queries by iteration (i.e., it returns a reference to another DNS server). It is authoritative for the domain .amisano.net.in.
The DNS server with IP 76.21.11.20 processes queries by iteration (i.e., it returns a reference to another DNS server). It is authoritative for the domain .delehoy.ac.nz.
The DNS server with IP 153.171.68.41 processes queries by iteration (i.e., it returns a reference to another DNS server). The other DNS servers it knows about are:
198.97.190.53
57.156.222.141
The DNS server with IP 45.20.229.55 processes queries by recursion. It is authoritative for the domain .net.in.The only other DNS server it knows about is 145.30.209.141.
The DNS server with IP 146.146.116.122 processes queries by iteration (i.e., it returns a reference to another DNS server). It is authoritative for the domain .ac.nz.The only other DNS server it knows about is 76.21.11.20.
A DNS server that is authoritative for a domain knows the IP address of all hosts that sit directly in this domain, and the IP addresses of the DNS servers for all subdomains. If a DNS server X knows about another DNS server Y as stated in the list above, then this implies that X knows which domain(s) Y is authoritative for.

Answer the questions below in the respective line in the answer file. Please ensure you use the correct format.
Important note about answers: All answers must be IP addresses in dotted decimal format without CIDR suffix or other information added.
Double-check your answers and format.

Part 1:
Your laptop’s browser is trying to establish a connection to a host with FQDN salad.delehoy.ac.nz whose IP address 46.132.230.72 your laptop does not yet know. You may assume that neither the laptop nor any of the DNS servers has queried any part of the FQDN before, except as may be reflected by their knowledge of other DNS servers that are authoritative for the FQDN or parts thereof.

1. Which DNS server will your laptop contact to initiate the lookup? Your answer must be the DNS server’s IP address. (1 mark)

2. Which DNS server will the server 103.16.156.24 contact first as part of the lookup process? Your answer must be that DNS server’s IP address. (1 mark)

3. Which host will receive a response from 198.97.190.53 as part of the lookup process? Give the host’s IP address. (1 mark)

4. Which host will receive a response from 146.146.116.122 as part of the lookup process? Give the host’s IP address. (1 mark)

5. Which IP address will be returned as part of this response? (1 mark)

6. Which host (DNS server or laptop) first learns the IP address of salad.delehoy.ac.nz from the authoritative server in the process? Give the host’s IP address. (1 mark)

7. What is the destination host IP address of the 6th UDP packet sent by any host as part of lookup? Give the host’s IP address. (1 mark)

Part 2:
Your laptop’s browser is now trying to establish a connection to a host with FQDN north.amisano.net.in whose IP address 70.213.228.61 your laptop does not yet know. Again, you may assume that neither the laptop nor any of the DNS servers has queried any part of the FQDN before, except as may be reflected by their knowledge of other DNS servers that are authoritative for the FQDN or parts thereof.

8. What is the IP address of the third DNS server that receives a UDP packet with a DNS query as part of this lookup? (1 mark)

9. What is the IP address of the host that 57.156.222.141 sends its response to? (1 mark)

10. Which host queries the DNS server 145.30.209.141? Give the host’s IP address. (1 mark)

11. What is the IP address of the host that 103.16.156.24 learns north.amisano.net.in’s IP address from? (1 mark)

My answers are the following, however, only Q1, 2 and 8 were marked correct. The rest of the questions are wrong. Please help
AUID: 221657409
1: 103.16.156.24
2: 153.171.68.41
3: 153.171.68.41
4: 153.171.68.41
5: 46.132.230.72
6: 153.171.68.41
7: 153.171.68.41
8: 57.156.222.141
9: 153.171.68.41
10: 153.171.68.41
11: 153.171.68.41

I want you to answer every question step by step and with great detail, explaining clearly how you derived that answer. Since my original answers for question 3, 4, 5, 6, 7, 9, 10 and 11 were wrong, please fix them