Chapter 4. Fundamentals of IPv4 Addressing and Routing
This chapter covers the following exam topics:
1.1 Describe the purpose and functions of various network devices
1.1.a Interpret a network diagram
1.3 Use the OSI and TCP/IP models and their associated protocols to explain how data flows in a network
1.3.a IP
The TCP/IP network layer (Layer 3) defines how to deliver IP packets over the entire trip, from the original device that creates the packet to the device that needs to receive the packet. That process requires cooperation between several different jobs and concepts on a number of devices.
This chapter begins with an overview of all these cooperating functions, and then it dives into more detail about each area. These areas include ...
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