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单选题
CIDR地址块192.168.10.0/20所包含的IP地址范围是( )。
A
192.168.10.0~192.168.12.255
B
192.168.10.0~192.168.13.255
C
192.168.0.0~192.168.14.255
D
192.168.0.0~192.168.15.255
参考答案
参考解析
解析:
CIDR地址由网络前缀和主机号两部分构成。CIDR将网络前缀都相同的连续的IP地址组成“CIDR地址块”。题目中的CIDR块的网络前缀的长度为20位,主机号为12位,因此192.168.10.0/20地址块中的地址数为212个。其中,当主机号为全0时,取最小地址即为192.168.0.0。当主机号全为1时,取最大地址192.168.15.255。应注意主机号为全0和全1的地址一般不使用。
CIDR地址由网络前缀和主机号两部分构成。CIDR将网络前缀都相同的连续的IP地址组成“CIDR地址块”。题目中的CIDR块的网络前缀的长度为20位,主机号为12位,因此192.168.10.0/20地址块中的地址数为212个。其中,当主机号为全0时,取最小地址即为192.168.0.0。当主机号全为1时,取最大地址192.168.15.255。应注意主机号为全0和全1的地址一般不使用。
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考题
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考题
单选题一个网段地址为192.168.10.0、子网掩码地址为255.255.255.0的网络,它允许的最大主机地址是()A
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考题
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an OSPF update for network 192.168.0.0/16B
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a static router to network 192.168.10.0/24 with a local serial interface configured as the next hopD
a RIP update for network 192.168.10.0/24E
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a default route with a next hop address of 192.168.10.1
考题
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考题
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考题
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考题
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172.16.2.45/24D
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