多选题 查看以下输出并回答问题。 (Cisco Controller)＞show client detail 00:15:af:0a:0b:71 Client MAC Address.................... 00:15:af:0a:0b:71 Client Username....................... N/A AP MAC Address........................ 00:1a:a2:fc:df:a0 Client State.......................... Probing Wireless LAN Id....................... N/A BSSID................................. 00:1a:a2:fc:df:9f Channel............................... 11 IP Address............................ Unknown Association Id........................ 0 Authentication Algorithm.............. Open System Reason Code........................... 0 Status Code........................... 0 Session Timeout....................... 0 Client CCX version................... No CCX support Mirroring............................ Disabled QoS Level............................ Silver Diff Serv Code Point(DSCP)........... disabled 802.1P Priority Tag.................. disabled WMM Support.......................... Disabled Mobility State....................... None Mobility Move Count.................. 0 Security Policy Completed............ NO --More-- or (q)uit Policy Manager State................. START Policy Manager Rule Created.......... Yes NPU Fast Fast Notifled............... NO Pollcy Type.......................... N/A 根据这个输出，客户端具有完全IP连接吗? a．有 b．没有，客户端具有部分连接，但无DNs c．没有，由于客户端没有IP地址，因此无IP连接 d．有，但网络是关闭的