This chapter considered the five most common transport services provided by IP networks:
• IPv4
• IPv6
• UDP
• TCP
• QUIC
IPv4 and IPv6 separate the physical and logical transmission of data so IP networks can work across many physical networks.
UDP provides a simple data transport method ideal for situations where small amounts of data can be dropped without causing an application to fail. TCP and QUIC provide a more complex data transport mechanism with flow control, error control, and encryption.
Along the way, this chapter explored fragmentation, connectionless data transmission, connection-oriented data transmission, identifying flows, and PMTUD.
In the next chapter, we move up a layer to discuss application transport, including protocols designed to transfer files, remotely access a system, and carry web pages across the Internet.
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 14-3 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 14-3 Chapter Review Tracking
Review All the Key Topics
Table 14-4 lists the key topics for this chapter.
Table 14-4 Key Topics for Chapter 14
Key terms in this chapter include
TCP flow control error control IPv4 reassembly fragmentation TTL IPv6 PA address space PI address space connectionless transport connection-oriented transport three-way handshake windowed flow control QUIC five-tuple PMTUD Concepts and Actions
Review the concepts considered in this chapter using Table 14- 5. You can cover the right side of this table and describe each concept or action in your own words to verify your understanding.
Table 14-5 Concepts and Actions
