单项选择题
A default Frame Relay WAN is classified as what type of physical network？（）
A.point-to-point B.broadcast multi-access C.nonbroadcast multi-access D.nonbroadcast multipoint.broadcast point-to-multipoint
单项选择题 Which VTP mode is capable of creating only local VLANs and does not synchronize with other switches in the VTP domain?（）
单项选择题 TheenablesecretcommandisusedtosecureaccesstowhichCLImode？（）
单项选择题 Where does routing occur within the DoD TCP/IP reference model?（）
