Chapter 2 - 802.11 Communications - Bits/Bytes/Segmentation/Encapsulation/etc. REALLY brief

Layer 4 - Segments (TCP) Datagrams (UDP)

Layer 3 - Packets

Layer 2 - Frames

Layer 1 - Bits 1's and 0's

There is a little discussion in this chapter about bits to bytes. As well as converting bytes to decimal values.