1. All IEEE 802.11 standards use ___ ___ signaling,meaning a wireless station can only transmit or receive but cannotdo both simultaneously, while IEEE 803.2 standard uses___ ____ signaling, meaning a wireless station cantransmit or receive simultaneously.

2. At what layer of the OSI model do the IEEE 802.11 standardsdiffer from one another___________ and at what layers of OSImodel do the IEEE 802.11 standards differ from IEEE 803.2 standard _____________ and _______________?