CS 457 - Fall 2008

Homework 4

1. (10pts): Exercise 5.7 (p.444). For this exercise, please read section 5.2.3 in the book first.
   
2. (10pts): Exercise 5.8 (p.444)
3. (15pts): Exercise 5.14 (p. 445)
4. (10pts): Exercise 5.16 (p.446)
5. (15pts): Exercise 5.20 (p.447)
6. (15pts): Exercise 6.29 (p.535)
7. (15pts): Exercise 6.31 (p.536)
8. (10pts): Read the man page for dig. Then use dig to resolve www.cs.colostate.edu. What is the cname for our webserver? Also find our mailserver (mx record) and nameservers (ns records). Pick three more commercial sites that seem interesting (you tell us what interesting is - hint: do you see any opportunity for load sharing? Multiple nameservers? What else?) Hypothesize as to what is going on for each scenario.