___________is a medium access control protocol used for transmitting data via a shared network channel.

ALOHA is a medium access control protocol used for transmitting data via a shared network channel. It was developed at the University of Hawaii and is known for its simplicity. In ALOHA, each station can transmit data whenever it has data to send, without checking if the channel is busy or not. However, collisions may occur if two or more stations transmit at the same time, resulting in data loss. ALOHA is a random access protocol, meaning that stations contend for the channel and collisions are resolved through retransmissions.