●A firewall is a (71) system designed to (72) an organization′s network against
●A firewall is a (71) system designed to (72) an organization′s network against threats.
(71) A．operating
B．programming
C．security
D．data
(72) A．prevent
B．protect
C．examine
D．exploit
正确答案：C,B【解析】译文：防火墙是一个安全系统，它被设计用来保护某组织的网络不受破坏。
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