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31 Days Before Your CCENT Certification by Scott Bennett

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Summary

The seven-layer OSI model and four-layer TCP/IP model provide a map for the processes of formatting, encapsulating, addressing, encoding, and transmitting data over a network. First, a network application creates data for transmission. Next, the data moves through the OSI layers as segments, packets, frames, and finally bits to be transferred over the network. The receiving device rebuilds the data in reverse, and the receiving network application presents the data to the user. Many protocols are implemented during this communication. Day 29 focuses on the protocols used in the OSI and TCP/IP layered models and the impact of some network applications on a network. You can further review the topics from today on pages 5–36 of CCNA Flash ...

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