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  • Writer's picturePacket Pundit

Part 1 - Introduction to Networking Fundamentals

Updated: Aug 7

Welcome back, everyone! In our latest weekend study session, my colleague Blake and I met to review the study material we planned to cover during the weekdays. These sections encompassed Chapters 1-3 and covered foundations in TCP/IP networking, Ethernet LANs, WANs, and IP routing. Since I have already gotten my CCNA, much of this information is review for me -- however, if I plan to sit for the CCNP in the next few months, I wanted to start my journey at the beginning because it is very obvious having worked in enterprise for 4 years now, that I have forgotten some of the fundamental information that will be required to pass any future certs. This last weekend was a great success, and I am excited to move forward with our studies. Below is a recap of the key highlights and takeaways from our intensive study session.

Chapter 1: TCP/IP Networking Chapter 1 served as our introduction to the TCP/IP networking model. We explored the history leading up to TCP/IP, gained an overview of the TCP/IP networking model, and examined its various layers, including the application layer, transport layer, network layer, and data-link and physical layers. Additionally, we delved into TCP/IP addressing basics, IP routing fundamentals, and compared the TCP/IP and OSI networking models.

Chapter 2: Fundamentals of Ethernet LANs: Building upon our knowledge from Chapter 1, Chapter 2 delved into the world of Ethernet LANs. We explored different types of LANs, including SOHO and enterprise networks. The chapter provided an overview of Ethernet physical layer standards, such as single-mode and multimode fiber, as well as copper connections. We also learned about UTP cabling pinouts, data encapsulation terminology, Ethernet addressing, and the use of Ethernet switches and hubs.

Chapter 3: Fundamentals of WANs and IP Routing Moving forward, Chapter 3 expanded our understanding to wide-area networks (WANs) and IP routing. We explored the physical details and HDLC data-link details of leased lines, along with Ethernet as a WAN technology. The chapter emphasized the logic behind IP routing, both at the host level and within the network. We also examined IP addressing, subnetting, the IP header, IP routing protocols, and other network layer features like the Domain Name System (DNS) and ICMP Echo (ping command).

Reinforcing Knowledge: Chapter Review Questions and Exam Prep At the end of each chapter We tackled the comprehensive Chapter Review questions, designed to test our understanding of the topics covered. To further solidify our knowledge, we utilized the Pearson Test Prep program, which provided actual questions from the CCNA exam that specifically pertained to the chapters we studied. We diligently made notes on questions that required further review or seemed to have peculiar wording, ensuring we would revisit those sections in the books.

Conclusion: This first weekend study session focusing on "Part 1" of the CCNA Certification Guide Volume 1 was an enriching and productive experience. We gained a better understanding of TCP/IP networking, Ethernet LANs, WANs, and IP routing. By diligently working through Chapter Review questions and utilizing the exam preparation resources, we identified areas for improvement and honed our knowledge.

Stay tuned for our upcoming study adventures as we continue our journey towards certification!

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