CCNA试题,A national retail chain needs to design an IP addressing scheme to support a nationwide network.Thecompany needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.Working with only one Class B address,which of the
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CCNA试题,A national retail chain needs to design an IP addressing scheme to support a nationwide network.Thecompany needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.Working with only one Class B address,which of the
CCNA试题,
A national retail chain needs to design an IP addressing scheme to support a nationwide network.The
company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.
Working with only one Class B address,which of the following subnet masks will support an appropriate
addressing scheme?(Choose two.)
A.255.255.255.0
B.255.255.255.128
C.255.255.252.0
D.255.255.255.224
E.255.255.255.192
F.255.255.248.0
CCNA试题,A national retail chain needs to design an IP addressing scheme to support a nationwide network.Thecompany needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.Working with only one Class B address,which of the
全国零售连锁公司,需要设计为其制定一个IP寻址计划,需要300个子网,每个子网最大能支持50个主机地址,目前只有一个B类地址,问下面哪几个子网掩码符合要求.
首先要300个子网,那肯定最少要借主机位至少9位做网络位,既2的9次方可以分512个子网满足第一个要求,然后剩下32-16-9=7的主机位,有2的7次方的主机数量,既128-2=126个可用主机IP,也满主条件.因此掩码为25的满主条件.写成10进制为：255.255.255.128
同理,借10主机位为网络位,即2的10次方有1024个网络位,也符合,看看剩下的主机位,32-16-10=6,2的6次方主机位为64,也满足最大50主机位的要求.所以255.255.255.192也符合.
答案：BE