The prupose of a network( )is to provide a shell around the network which will protect thesywtem connected to the network from various threat。(2017年下半年程序员综合知识真题答案与解析)
The prupose of a network( )is to provide a shell around the network which will protect thesywtem connected to the network from various threat。(2017年下半年程序员综合知识真题答案与解析)
A、firewall
B、switch
C、router
D、gateway
参考答案: A
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