CompTIA Network+: OSI Model Layers & Data Encapsulation

CompTIA Network+
  • 14 Videos | 1h 27m 35s
  • Includes Assessment
  • Earns a Badge
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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.

WHAT YOU WILL LEARN

  • discover the key concepts covered in this course
    outline the features and purpose of the Open Systems Interconnection (OSI) model
    outline the devices, applications, protocols, and services that function at the physical layer
    describe the devices, applications, protocols, and services that function at the data link layer
    outline the devices, applications, protocols, and services that function at the network layer
    describe the devices, applications, protocols, and services that function at the transport layer
    outline the devices, applications, protocols, and services that function at the session layer
  • recognize the devices, applications, protocols, and services that function at the presentation layer
    describe the devices, applications, protocols, and services that function at the application layer
    outline the characteristics and purpose of Ethernet headers, IP headers, and TCP/UDP headers
    outline the features and purpose of TCP flags and differentiate between synchronization (SYN) and acknowledgement (ACK)
    differentiate between fixed and variable payloads
    differentiate between maximum transmission unit (MTU) and maximum segment size (MSS)
    summarize the key concepts covered in this course

IN THIS COURSE

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