多项选择题
A.15.234.118.63 B.92.11.178.93 C.134.178.18.56 D.192.168.16.87 E.201.45.116.159 F.217.63.12.192
A. 10.172.13.65 B. 172.16.223.125 C. 172.64.12.29 D. 192.168.23.252 E. 198.234.12.95 F. 212.192.48.254
A. Switch to host B. Switch to switch C. Hub to hub D. Switch to hub E. Host to host