Designing a Network with Hierarchical and Modular Design

[effing_society]

Hello all pros,

I am currently practicing designing a network for an enterprise based on the requirements of hierarchical design and modular design that has been specified in Requirements.jpg. The original network is as stated in Practice.pdf.

Now, I have done designing it and I was wondering whether it is a correct design or does it still have any rooms for improvement, zipped PKT file has been attached for your references(there are no password)!

I thank you all in advanced for any advices or reference that are provided. 

REFERENCE that I have used are as below:

1. https://www.ciscopress.com/articles/article.asp?p=2202410&seqNum=6 
2. Reference_Picture_1.jpg

[Georg Pauwen]

Hello,

the design looks very sound actually. The requirements mention a Network IDS, which Packet Tracer does not have as far as I recall, but you could configure an IPS (something like what is outlined in the document linked below)...

http://resources.intenseschool.com/ccna-lab-practice-with-cisco-packet-tracer-configuring-intrusion-prevention-system/