CSMA/CA-无线局域网标准802.11的MAC和802.3协议的MAC非常相似,都是在一个共享媒体之上支持多个用户共享资源,由发送者在发送数据前先进行网络的可用性检测。(CSMA/CA - 802.11 protocol standard 802.11 wireless LAN MAC and MAC are very similar, is on a Shared media support multiple users to share resources, by the sender before sending data network usability testing.)