Understanding the OSI Model: Networking Fundamentals - Lesson 2a

Module 1 of the Networking Fundamentals course will illustrate the core of networking: How data moves through the Internet. The foundation of that is understanding the OSI model.

But this isn't about mere memorization, instead we are going to look at the underlying goals of each layer of the OSI model, and how it contributes to the over all goal of networking: Moving data between hosts.

Before watching this video, watch the first videos in the series:

Lesson 1a - Network Devices: Hosts, IP Addresses, Networks:
https://www.youtube.com/watch?v=bj-Yfakjllc

Lesson 1b - Network Devices: Repeaters, Hubs, Switches, Routers
https://www.youtube.com/watch?v=H7-NR3Q3BeI

This lesson is a free lesson from my new course on Networking Fundamentals. The first module of this course is meant to teach you everything you need to know to understand how packets move through a network. All the lessons for the first module will be released for free here on Youtube:


=== Networking Fundamentals - Module 1 ===
Lesson 1 - Network Devices
Part 1: https://youtu.be/bj-Yfakjllc
Part 2: https://youtu.be/H7-NR3Q3BeI

Lesson 2 - OSI Model
Part 1: https://youtu.be/LkolbURrtTs
Part 2: https://youtu.be/0aGqGKrRE0g

Lesson 3 - Everything Hosts to do speak on the Internet
Part 1: https://youtu.be/gYN2qN11-wE
Part 2: https://youtu.be/JI9Zm2tbUoE

Lesson 4 - Everything Switches do to facilitate communication
Part 1: https://youtu.be/AhOU2eOpmX0
Part 2: https://youtu.be/G7GyWjJtjNs

Lesson 5 - Everything Routers do to facilitate communication
Part 1: https://youtu.be/AzXys5kxpAM
Part 2: https://youtu.be/Ep-x_6kggKA
Part 3: https://youtu.be/zmxLg4jV0ts

Lesson 6 - Networking Protocols
- https://youtu.be/E5bSumTAHZE
- ARP, FTP, SMTP, HTTP, SSL, TLS, HTTPS, DNS, DHCP
- Four items MUST be configured for Internet Connectivity

Lesson 7 - How Data moves through the Internet
- https://youtu.be/YJGGYKAV4pA
- Interview question: What happens when you type "site.com" into a web browser?

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🖧 Full Networking Fundamentals series (Module 1 - all FREE):
https://www.youtube.com/playlist?list=PLIFyRwBY_4bRLmKfP1KnZA6rZbRHtxmXi

📇 Details about the Full Networking Fundamentals Course:
https://www.practicalnetworking.net/index/networking-fundamentals-how-data-moves-through-the-internet/

📜 Studying for your CCNA?
https://www.practicalnetworking.net/index/ccna/

🧮 Want to learn Subnetting?
https://SubnetIPv4.com

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https://www.youtube.com/playlist?list=PLIFyRwBY_4bTwRX__Zn4-letrtpSj1mzY

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#networking #ccna #network #osi #switches #routers