This is the back page of a TCP/IP (Transmission Control Protocol/Internet Protocol) printout back in 1996. Lesson they do not teach really deep during our academics. Have to learn at my own phase which is during an actual job.
But does not stop me from not drawing when getting bored of learning sliding window used in connecting to the internet. Notice the highlight mark back page stain of the marker. Well, its the reason why I draw on scratch paper. Also a bad thing to ruin a nice drawing.
Hope you like the drawing.