I was working on computer networks and i want guidance to understand few concepts

I am working on simulator (interactive animator) along with an interface to illustrates one of the most fundamental concepts in computer networking: queuing delay (w/ possible packet loss).

and I am working on
- a dropdown menu for the packet arrival rates
- a dropdown menu for the link transmission speeds
- the simulator shows the packet being arrived at the input buffer and forwarded to the output buffer through the queue.
- the Start button to initiate simulation
- the Reset button to restart simulation with new setting