CompTIA Network+: OSI Model Layers & Data Encapsulation

The Open Systems Interconnection or OSI model is used to describe how computer systems communicate with each other. Frequently used for troubleshooting network problems the seven layers of the OSI model are concepts with which all networking professionals should be familiar
In this course you’ll learn about each layer of the OSI model. You’ll outline how human-readable information such as emails and chat messages are transferred over a network as well as the path this information takes along the OSI model.
You’ll also examine data encapsulation and decapsulation within the context of the OSI model. You’ll outline characteristics for Ethernet headers IP headers and TCP/UDP headers and learn to differentiate between synchronization (SYN) and acknowledgement (ACK) flags.
Lastly you’ll recognize the primary differences between maximum transmission unit or MTU and maximum segment size or MSS and how these concepts relate to data being transmitted over a network.