Wk 1 Discussion – Compare Networks

Wk 1 Discussion – Compare Networks

Post a total of 3 substantive responses over 2 separate days for full participation. This includes your initial post and 2 replies to classmates or your faculty member. 

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Due Day 3 (Thursday)

Respond to the Networking Models Discussion below in a minimum of 175 words:


**Instructors Note**

  • You will not see other students’ responses until you post your initial response to the discussion questions each week.
  • I will post optional discussion questions in the thread below throughout the week. Replying to these questions is optional but will count towards your 2 additional replies.
  • Look for additional resources that I will post with most discussion topics. I try to link to videos and other sources that help explain a topic more.

**Important Notes About Discussion**

  • Do not plagiarize! No more than 50% of a post can be copied and cite your sources. Always try to add your own thought or ideas to a topic. Relate back to any personal experience you may have if you can. This helps make your post substantive.
  • What is an unsubstantive post you ask? Just replying “I agree”. It’s fine to say you agree, but add more to it. Why do you agree?
  • University Policy is there no credit for post after the week ends.
  • Remember you must post at least one time in the discussion per week to be in attendance for that week. If you do not, you are marked absent. If you are absent 2 weeks, the automated system will auto-drop you from the course.



Due Day 7 (Monday)

Post 2 replies to classmates or your faculty member. Be constructive and professional.


Post a total of 3 substantive responses over 2 separate days for full participation points. This includes your initial post and 2 replies to classmates or your faculty member.


Understanding Networking Models


The original networking model was developed by the Department of Defense in the 1970s. This is the original TCP/IP model. This broke down networking operations into 4 basic layers. When I started in the networking field in the 1980s, there was a need to expand on the layers of operations. Thus the OSI model was developed. We still use the OSI model today, however there is also a revised version of the TCP/IP model that is popular.


For this course and the CompTIA Networking+ Exam, we will concentrate on the OSI model. In more advanced courses I teach, we use the newer 5-Layer TCP/IP Model. I have made a chart that compares the different models for your reference. This video compares the Original TCP/IP and the OSI models. I highly recommend learning both even though we will reference the OSI model mostly in this course.




The OSI Model is broken down into 7 layers. Layers 1-3 primarily are your hardware layers while layers 4-7 focus more on protocols and applications. Antaria’s site may also help you understand the OSI Model.


We are going to mainly discuss Layers 1-4 (Transport, Network, Data Link, & Physical) in this course. Choose one of those 4 layers. Discuss what the layer covers. What are at least 2 examples of devices or technologies of that layer and what/how are they used in networking?



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