0. 实验文件地址

http://www-net.cs.umass.edu/wireshark-labs/Wireshark_DNS_v7.0.pdf

1. nslookup

2. ipconfig

3. Tracing DNS with Wireshark

3.1 www.ietf.org

3.1.1 Packets Display

3.1.2 Question & Answer

4. UDP

5. port: 53

6. 211.67.48.8; yes

7. type: A. no "answers".

8. Three answers.
   

9. no

10. no

3.2 www.mit.edu

3.2.1 Packets Display

3.2.2 Question & Answer

11. port: 53
12. 211.67.48.8 yes
13. type: AAAA; no "answers"

14. Three answers. Each of these answers contain name, type, class, time to live, data length and CNAME.

15. 

3.3 www.aiit.or.kr bitsy.mit.edu

3.3.1 Packets Display

3.3.2 Question & Answer

20. 18.0.72.3; 211.67.48.8
21. type: A. no "answers"
22. Only one "answers".
23.