Four links and a homework.

Wireshark program was mentioned in today's lecture. You can get it for free. Wireshark is a network sniffer and protocol analyzer software. A tool to perform to give you x-ray vision for your network traffic.

You can get canned network traffic captures. If you want to learn a bit about capture filters to perform you own capture.

Wikipedia take on ISO/OSI reference model.

And finally, there is a set of solved exercises about chapter one that you should do at home. I started translating them but I kind of got tired in the second page, so I am posting the Spanish version.

Just as a reminder, next lecture previous reading is section 2.1 of the book.