IPPBXSIP协议中允许IP地址列表,以下格式有错误的是?
A:112.111.111.123
B:112.111.111.123/255.255.255.0
C:112.111.111.123/255.255.255.128
D:112.111.111.123/255.255.255.255
出自:代维资格证