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(20)报表的数据源可以是
A)表或视图
B)表或查询
C)表、查询或视图
D)表或其他报表
Which statement accurately describes firewall user authentication?()
A、Firewall user authentication provides another layer of security in a network.
B、Firewall user authentication provides a means for accessing a JUNOS Software-based security device.
C、Firewall user authentication enables session-based forwarding.
D、Firewall user authentication is used as a last resort security method in a network.
在OSl中,采用了三级抽象,即__________、服务定义和协议规格说明。
令牌总线局域网中的令牌是一种特殊结构的__________帧。
Internet的主要组成部分包括__________、路由器、服务器与客户机和信息资源。