求教一道计算机题目.
Whichofthefollowingistrueaboutfirewalls?a.Itcanbeusedtoscanforvulnerabilitiesinasyste...
Which of thefollowing is true about firewalls?
a. It can be used to scan for vulnerabilities in a system.
b. It can be either a piece of hardware or software.
c. It is a passive form of intrusion detection system and it alerts network
admistrators when abnormal traffic is detected.
d. It typically can detect encrypted threats.
答案上选的是B,那个选项C为什么不可以?C说的是什么?是杀毒软件吗?其他几项指的都是什么? 展开
a. It can be used to scan for vulnerabilities in a system.
b. It can be either a piece of hardware or software.
c. It is a passive form of intrusion detection system and it alerts network
admistrators when abnormal traffic is detected.
d. It typically can detect encrypted threats.
答案上选的是B,那个选项C为什么不可以?C说的是什么?是杀毒软件吗?其他几项指的都是什么? 展开
2个回答
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