The reading portion of Chapter 1 in Wendell Odom’s CCNA guide. I started this because I think I do much better studying from a book rather than just the videos. I plan to watch the videos first to get a high-level overview, then read the equivalent sections of the book. I was driving my self crazy scrolling back to get particular commands or to hear a detailed explanation again.
Section 21: TCP UDP, videos 103-108. David Bombal’s CCNA Course.