题目内容：
在以下各项中，（）不是防火墙技术。A．包过滤
B．应用网关
C．IP隧道
D．代理服务
参考答案：
单选：在以下各项中，（）不是防火墙技术。A．包过滤B．应用网关C．IP隧道D．代理服务
- 题目分类：计算机网络管理员
- 题目类型：单选
- 查看权限：VIP
A．包过滤
B．应用网关
C．IP隧道
D．代理服务
A．包过滤
B．应用网关
C．IP隧道
D．代理服务
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可路由网络协议的网络层地址由哪两部分组成（）。A．网络地址和主机地址B．主机地址和网络掩码C．网络地址和网络掩码
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