题目内容：
The firewall device is a（ ）system for connecting a computer network to other computer network.
A.hardware
B.software
C.security
D.I/O
参考答案：【答案仅供学习，请勿对照自行用药等】
答案解析：
选择题：The firewall device is a（ ）system for connecting a computer network to other co
- 题目分类：软件水平考试
- 题目类型：选择题
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