what is TCP/IP and OSI? // FREE CCNA // EP 3

Summary by Krater

An introduction to computer networking models, comparing the TCP/IP and OSI networking models, their history starting with ARPANET in 1969, and how their layers map to each other. The video concludes with CCNA exam practice questions on OSI layers and network devices.

From the video

Answers: What are the differences between the TCP/IP and OSI networking models?

• network models
• TCP/IP model
• OSI model
• ARPANET history
• packet switching
• network layers
• CCNA practice questions

What it concludes

• ARPANET, the first network, was created in 1969 by the US Department of Defense.
• Early proprietary corporate networks could not communicate with each other because they spoke different languages.
• The TCP/IP model is more widely adopted than the OSI model.
• Switches operate primarily at Layer 2 (Data Link layer) of the OSI model.
• Hubs and repeaters operate primarily at Layer 1 (Physical layer) of the OSI model.