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3. I nvestigate cases of domain name disputes. Examine a case that you find especially interesting.
Who were the parties involved? How was the issue resolved? Do you agree with the decision?
4. Describe how the DNS is fault‐tolerant and promotes load balancing. Give examples of other
types of information systems that might need to be fault‐tolerant and offer load balancing.
5. Research DNS poisoning online. List a case, other than the one mentioned in this chapter, where
DNS poisoning took place. Which network was poisoned, who were the victims, and how did
hackers exploit the poisoned system? Could this exploit have been stopped? How? Whose
responsibility is it to stop these kinds of attacks?
6. Why is the switch from I Pv4 to I Pv6 so difficult? What key principles, discussed in prior chapters,
are slowing migration to the new standard?
7. Test to see if networks that you frequently use (home, school, work, mobile) are ready for I Pv6 by
visiting http://test‐ipv6. com/ (or a similar site). Search online to see if your service provider has
posted details outlining their I Pv6 transition strategy and be prepared to share your results with
the class. Do you use other products not tested by the Web site mentioned above (e. g. , network‐
enabled video games or other software)? Search online to see if your favorite products and services are I Pv6 ready. 12.3 Getting Where You’re Going
L E A RN I N G OBJ E C T I V E S
1. Understand the layers that make up the I nternet—application protocol, transmission control
protocol, and I nternet protocol—and describe why each is important.
2. Discuss the benefits of I nternet architecture in general and TCP/I P in particular.
3. Name applications that should use TCP and others that might use UDP.
4. Understand what a router does and the role these devices play in networking.
5. Conduct a traceroute and discuss the output, demonstrating how I nternet interconnections
work in getting messages from point to point.
6. Understand why mastery of I nternet infrastructure is critical to modern finance and be able to
discuss the risks in automated trading systems.
7. Describe VoI P, and contrast...
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This document was uploaded on 01/31/2014.
- Winter '14