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Network Programming ![]() This website demonstrates using wikis as teaching and learning tool. The course instructor is happy to share the teaching materials here with those who find it readable. |
Tutorial /
Domain Name SystemIntroduction: You will do some activities to learn more about DNS and the Interent.
Activity One
(Q1) How many top-level domains are there?
(Q2) How many top-level domains are belonging to country code?
Activity Two
(Q3) List the details of the servers: hostname, IP address, and location.
(Q4) How do you use this DNS traversal checker to verify your findings?
Activity Three:
(Q5) What is your default DNS resolution server?
(Q6) How do you change the DNS server for your DNS query?
(Q7) Use the default DNS server to find all the name servers for the domain ouhk.edu.hk.
(Q8) Set the DNS resolution server to be 8.8.8.8. Then, find all the name servers for the domain ouhk.edu.hk.
(Q9) Are there any differences in your answers to (Q7) and (Q8)? Try to explain the results.
(Q10) Find a list of message transfer agents (MX records) for the domain ouhk.edu.hk.
Activity Four
(Q11) Report your findings in answering the above questions.
Some useful tools for you
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