A（）is a computer system or program that automatically prevents an unauthorized person from gaining access to a computer when it is connected to a network such as the Internet.
A（）is a computer system or program that automatically prevents an unauthorized person from gaining access to a computer when it is connected to a network such as the Internet.
A.firewall
B.gateway
C.router
D.anti-virus software
正确答案：A
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时间：2022-12-12 23:57:28