It's really important that you learn the TCP/IP model for the CCNA exam. You need to understand the protocols that we use in modern networks today like TCP, UDP, IPv4, IPv6, SSH, HTTPS, Ethernet and more.
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0:00 - Intro
0:22 - Hubs & Repeaters
01:50 - Bridges and Switches
02:50 - Pure Layer 2 Switch
03:30 - Layer 3 Switches
04:55 - Unmanaged Switch
05:50 - Layer 3 Routers
07:30 - Ethernet Routing
08:06 - How Devices & Protocols Works
09:02 - How Ethernet Functions
10:00 - Protocol Data Units (PDU’s)
11:42 - Conclusion
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