Distributed Coordination Function (DCF) is the fundamental Medium Access Control (MAC) technique of the IEEE 802.11-based WLAN standard. DCF employs a carrier-sense multiple access with collision avoidance (CSMA/CA) with binary exponential backoff algorithm. However, the inherent structure of DCF results in decreased throughput efficiency. i. Identify the root cause behind the throughput inefficiency of IEEE 802.11 DCF. Propose one possible solution to improve the IEEE 802.11 DCF throughput efficiency. iii. Identify the challenge(s) associated with your proposed solution. ii.