Final answer:
Interframe spaces in an 802.11 wireless local area network (LAN) are used to reduce collisions and manage access to the wireless medium.
Step-by-step explanation:
In an 802.11 wireless local area network (LAN), interframe spaces are used to reduce collisions and manage access to the wireless medium. These interframe spaces are gaps between data frames that allow different devices to take turns transmitting data in a controlled manner. By providing these spaces, it helps prevent data collisions and ensures efficient sharing of the wireless medium.