CS Learning Journal

  WELCOME TO WEEK 8 Learning Journal We are at the end of this course, finishing up with a short lecture and quiz, mostly focusing on Programming Assignment 4. So far, we have successfully created the Mininet network, the demo video, the diagram, and got the chat server to allow three users to connect. We are waiting for the TLS certification to finish implementing the second part of the project. Today, we have a meeting to discuss what we still need to do, as well as any questions or help needed.  This final week, we learned about Operational Security, including firewalls. There are three types of firewalls: stateless packet filters, stateful packet filters, and application gateways. We also learned about Deep Packet Inspection. Firewalls block unwanted traffic, and although they provide protection, attackers can sometimes still sneak in.  Another device we covered is the IDS (Intrusion Detection System) , which also provides protection by offering deep packet inspection and examining

  WELCOME TO WEEK 7 Learning Journal This week involved a lot of multitasking. Since this course is almost over, we took our final this weekend, and studying took most of my time. I reviewed all my notes and used the study guide to help me with my preparation. Additionally, we worked on the team programming assignment, PA4. So far, Edward and I have successfully started the Mininet network, and we were able to run pingall without any issues. We have divided the work for this part efficiently. We also ensured that the legacy network portion was completed before Monday so that our other group members could begin their tasks since they are collaborating on other sections. As a team, we have been working well together with excellent communication and contribution. Hopefully, we can have everything ready or close to completion by Friday. Regarding the lecture, we focused on the link layer. Specifically, we covered its role in error detection, multiple access protocols, and LANs. I found th

  WELCOME TO WEEK 6 Learning Journal This week was a bit shorter than the rest in terms of lectures. However, there is another project assignment coming up, and I started checking that out to see the requirements. I also started studying for the final exam by reviewing previous chapters and trying to grasp this week’s lectures as well. This week’s content will also be on the final exam. I feel like the weeks are going by really fast—just two more weeks, and we’re done. This week, I learned more about the network layer, specifically the control plane. In this chapter, we learned about the principles and protocols needed for routing. We also covered the traditional algorithms used in the control plane. These are Link-State , which uses the OSPF protocol , and Distance Vector , which uses the BGP  protocol . It is important to note that there are two approaches to structuring the network control plane: 1. Per-router control and 2. Logically centralized control . The per-router control pl