Complex sentence: Contention-free pollable (CF-Pollable) is a wireless networking standard defined by the IEEE 802.11b standard that uses CSMA/CA or carrier sense multiple access with collision avoidance.
Split into simpler sentences: Contention-free pollable (CF-Pollable) is a wireless networking standard defined by the IEEE 802.11b standard. It uses CSMA/CA or carrier sense multiple access with collision avoidance.