This chapter discusses the second of the two network models we will be covering in this book: globally the Transmission Control Protocol/Internet Protocol (TCP/IP) model. Like the OSI model we discussed in the previous chapter, it is imperative for you, as a network engineer, to understand the constituent components of this model. Nowadays, TCP/IP is ubiquitous in nature. It is on pretty much all network devices. If you can grasp this one model, you will be able to troubleshoot networking issues on a range of devices.
This chapter demonstrates how the TCP/IP model maps against the OSI model and mentions variations of the TCP/IP model, such as the Department of Defense (DoD) model.
The following topics will be covered in this chapter:
- Overview of the TCP/IP layers
- Understanding the application layer
- Understanding the transport layer
- Understanding the internet...