This chapter used physical world examples to explain the importance and uses of packaging—or encapsulation—and addressing in computer networks. You should also have learned about what a protocol is, what metadata is, and what a tunnel is.
One point to remember: addresses in computer networks can refer to many things, including a physical interface, a logical interface, a host (device), or even an application. Clearly differentiating these different kinds of addresses will help you lay a solid foundation for understanding computer networks.
Now that you understand the purpose of addresses, the next chapter will discuss how to work with addresses in computer networks.
One key to doing well on the exams is to perform repetitive spaced review sessions. Review this chapter’s material using either the tools in the book or interactive tools for the same material found on the book’s companion website. Refer to the
online Appendix D, “Study Planner,” element for more details.
Table 1-3 outlines the key review elements and where you can find them. To better track your study progress, record when you completed these activities in the second column.
Table 1-3 Chapter Review Tracking
Review All the Key Topics
Table 1-4 lists the key topics for this chapter.
Table 1-4 Key Topics for Chapter 1
Key Terms You Should Know
Key terms in this chapter include
