IP地址 172.16.20.5/20 的网络号(网络地址)为
A. 172.16.16.0
B. 172.16.20.0
C. 172.16.0.0
D. 172.16.20.4
IP地址是202.114.18.10,掩码是255.255.255.252,其(直接)广播地址是多少?
A. 202.114.18.255
B. 202.114.18.12
C. 202.114.18.11
D. 202.114.18.8
IP地址是202.114.18.190,掩码是255.255.255.192,其子网号是____
A. 202.114.18.128
B. 202.114.18.64
C. 202.114.18.32
D. 202.114.18.0
子网掩码为255.255.255.192,主机地址为210.29.227.14,则在该子网掩码下最多可以容纳多少个主机?
A. 254
B. 126
C. 62
D. 30