A . 255.255.248.0
B . 255.255.240.0
C . 255.255.252.0
D . 255.255.255.0
[单选题]某主机的IP地址为212.105.35.15/21,其子网掩码为()。A.255.255.248.0B.255.255.240.0C.255.255.
[单选题] 某主机的IP 地址为220.117.131.12/21,其子网掩码是 (28) 。(28)A. 255.255.248.0B. 255.255.240.0C. 255.255.252.0D. 255.255.255.0
[单选题]某主机的IP地址为220.117.131.12/21,其子网掩码是(28)。A.255.255.248.0B.255.255.240.0C.255.255.252.0D.255.255.255.0
[单选题]某主机的IP地址为200.15.13.12/22,其子网掩码是( )。A.255.255.248.OB.255.255.240.OC.255.255.252.OD..255.255.255.0
[单选题]某主机的IP地址为202.117.131.12/20,其子网掩码是______。A.255.255.248.0B.255.255.240.0C.255.255.252.0D.255.255.255.0A.B.C.D.
[单选题]某主机的IP地址为10.100.100.01/20,其子网掩码是______。A.255.255.248.0B.255.255.252.0C.255.255.240.0D.255.255.255.0A.B.C.D.
[单选题]某主机的IP地址为202.100.1.254/22,其子网掩码是 ______ 。A.255.255.250.0B.255.255.252.0C.255.255.254.0D.255.255.255.0A.B.C.D.
[单选题]某主机的IP地址为200.15.13.12/22,其子网掩码是()。A . 255.255.248.0B . 255.255.240.0C . 255.255.252.0D . 255.255.255.0
[单选题]某主机的IP地址为10.100.100.01/20,其子网掩码是( )。A.255.255.248.0B.255.255.252.0C.255.255
[单选题]某主机的IP地址为10.100.100.01/20,其子网掩码是( )。A.255.255.248.0B.255.255.252.0C.255.255