EXERCISES
1. In what way is the traffic of an early business computer network different from that of an early scientific-academic network? Is there such a distinction between these two types of systems today?
2. Why is the ISO/OSI protocol stack called a reference model? Do you think this will always be the case?
3. How is a Network layer protocol different from a Transport layer protocol?
4. Internet protocol standards are devised through the efforts of thousands of people all over the world—regardless of their having any particular background in data communications. On the other hand, proprietary protocols are created by a much smaller group of people, all of whom are directly or indirectly working for the same employer.
a) What advantages ...
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