多项选择题
Which two messages can carry the TSPEC from client to the AP?()
A.probe request B.association request C.authentication request D.reassociation request
单项选择题 WhatframetypeisusedtosignalTSPECreservationfromaclient?()
单项选择题 Whichprotocolisusedbymulticasttopreventloops?()