This chapter covers the following exam topics:
Operation of IP Data Networks
Identify common applications and their impact on the network
Predict the data flow between two hosts across a network.
The CCENT and CCNA exams focus mostly on functions at the lower layers of TCP/IP, which define how IP networks can send IP packets from host to host using LANs and WANs. This chapter explains the basics of a few topics that receive less attention on the exams: the TCP/IP transport layer and the TCP/IP application layer. The functions of these higher layers play a big role in real TCP/IP networks, so it helps to have some basic understanding before moving into the rest of the book, where you ...