Students are to design a network or network component using a design tool (example: Visio or CAD). Required is a visual representation of this network along with a document describing all aspect of the network design including product selection.
Please refer to "Sections of the Design Document" on page 25 of your text book "CCDA 640-864 Official Cert Guide". The choice of the type of network or network segment is up to the student. Below are some examples. If your choice is something other than what is below then consent of instructor is required.
Enterprise LAN design (Electronics)
Enterprise LAN design (Cabling)
Enterprise WAN design
Data Center design
Disaster recovery (redundancy) network design
Voice Network (IP Telephony, VoIP) design
Video Network design