IP地址可分为哪几类?(难)(基础知识)
AA类是0.0.0.0-127.255.255.255
BB类是128.0.0.0-191.255.255.255
CC类是192.0.0.0-223.255.255.255
DD类是224.0.0.0-239.255.255.255
EE类是240.0.0.0-255.255.255.255
AA类是0.0.0.0-127.255.255.255
BB类是128.0.0.0-191.255.255.255
CC类是192.0.0.0-223.255.255.255
DD类是224.0.0.0-239.255.255.255
EE类是240.0.0.0-255.255.255.255