In the first activity, I learned about Internet Reference models and Internet Protocols. Internet Reference models are models that can be referenced so that different systems can communicate even if they’re different. I also learned that the ISO model is not practical and doesn’t exist. One of the main differences between the ISO and TCP/IP model is that it has fewer layers. The TCP/IP model has four layers compared to the ISO model which has seven layers. The TCP/IP model has the Application, Transport, Internet, and Host to Network layers. The application layer does a lot of the work like saving passwords, and retrieving the passwords, as well as retransferring and distributing files and information. I also learned about Internet Protocols. Some of the types of protocols are TCP, IP, UDP, FTP, TFTP, and HTTP. Each protocol works differently and what they can do. TCP, for example, can be used for streaming. This is important to know because in the future I may need to know what protocols to use, and how they work.
In the second activity, I learned about how to configure the network settings and the network utility application. The thing that I learned the most from this was that I was able to re-establish the internet connection, or try to (one way to try to) by renewing the DCHP Lease. The way that the article explained it was it was like re-asking if the computer was still on the same page because it got confused with the IP address. I also learned that I could (on my own after playing around a little) rearrange (on the Mac at least) the preferred networks I’d like to join. I’m actually glad I found that because I would always connect to the printer (or it would try) when I first got home, and I found out the reason for that is because it was at the top of the list in the list of internet networks. I also learned that the computer saved every wi-fi name we had connected to. I found a wi-fi network from way back in 2013, which kind of shocked me because I didn’t know that it saved everything. I also learned how to delete those old networks as well by pressing the minus button below the list, which was helpful since there were a lot of wi-fi networks that were just hotels with no security. It was also interesting to see how many packets have been sent and received in the network utility. In the future, I think it will be useful to know how to set up the network as well as a possible solution to internet problems by renewing the DCHP lease. You can also run Network Diagnostics as well though if that doesn’t work.
In the third activity, one of the things that I couldn’t do on my Mac was to review the ping host. With the first activity within the reviewing the ping host, I would continuously get lines of “64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.082 ms”, except each time would be different and random. The icmp_seq also went up by one every time (later on I learned from Aya’s post on the discussion board that I could press “Ctrl + c” to stop this process, and it would tell me how many packets were transmitted and received and the percentage of packet loss, as well as the minimum, maximum, average, and standard deviation of the time each packet, took to send). I think that was very interesting to look at because they were all in a matter of milliseconds, which I think is pretty fast. I think it was kind of good to know because it means that there wasn’t any packet loss (it said 0.0% packet loss), so you know you’re getting all of the packets.