Problem
Virtualization, networks. Consider the internet, IP, its layer 3 proto-col, and two layer 4 protocols, namely TCP and UDP.
The system in the definition of virtualization we gave in Section 3.1.1 is the internet.
A. Explain how TCP virtualizes the internet. More specifically, what is the property TCP gives to the internet, that the internet does not (natively) have?
B. Describe, in any detail you like, what mechanisms TCP uses in order to achieve the property.
C. Who (not which hat) benefits from this virtualization?
D. Which hat benefits from this virtualization?
E. Which hat pays the price?
F. Explain why UDP does not virtualize the internet like TCP does.
G. Search "what protocols use UDP" and "what protocols use TCP". Explain why some protocols don't care to use an internet full of virtues.