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单选题
A host is to be part of a very small private network， which will never be connected to any other networks. Which of the following name resolution schemes would be the easiest to implement？（）
A
DNS
B
NIS
C
DHCP
D
etc/hosts file
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单选题In any NAT (network address translation) configuration, what is the Inside Global IP address?（）A
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A registered address that represents an inside host to an outside network.D
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单选题A network vulnerability scanner is part of which critical element of network and system security?（）A
host securityB
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policy management
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单选题Given the host IP address of 192.168.100.60 and a network mask of 255.255.255.224 (or /27), which address represents the correct network address for the referenced host?（）A
192.168.100.48B
192.168.100.16C
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192.168.100.32
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