Cisco CCNA Certification Course | Introduction to OSI Layer Model | Lesson 01 of 12

Cisco CCNA Certification Course | Introduction to OSI Layer Model | Lesson 01 of 12

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Learn more about the Cisco CCNA Certification Course. Here we'll talk about what is OSI layer model and give you real-world examples.

This Cybrary video is on the Cisco CCNA Course. Our online, self-paced Cisco Certified Network Associate CCNA training teaches students to install, configure, troubleshoot and operate LAN, WAN and dial access services for medium-sized networks. You'll also learn how to describe the operation of data networks.

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Welcome to the free Cybrary online course for the Cisco Certified Network Administration (CCNA) professional certification. This introductory lesson will help you fully understand the concepts of Cisco’s CCNA credential.

Layer 1 Physical Layer Overview** Our first lesson of the Cybrary CCNA course focuses on Layer 1 of the OSI Model, the physical Layer. You'll learn what is meant by physical layer, what is meant by working at that specific layer, and what if any issues you should expect to run into.

Layer 2 Data Link Overview\*\* This lesson covers the Data Link Layer. We begin with recommendations on how to reference OSI model layers in your conversation and why it's important to reference them correctly.

*Mac Addresses* We mentioned MAC Addressing in the previous lesson. For this lesson, we expand on MAC Addressing significantly and discuss how the protocol data unit is structured in layer 2.