This course utilizes many different educational materials such as lectures, internet links, and videos. In fact, I read the lecture and links and they are easy and amazing. The Wikipedia articles are very useful because they offer a lot of explanations that help me to understand many terms and also help me to complete my assignment. Then, I watch the videos; they are also very helpful and useful because they contain many interesting explanations. One of the most interesting and amazing videos is “Warriors of the Net” because it summarized our whole week’s class lecture in 13 minutes. Also, the video of the history of the Ethernet (Robert Metcalfe) is very interesting, indicating when and how the Ethernet began.