对于粉尘作业点,矿山企业应当按照国家规定的方法,每月至少检测() 一次。 二次。 三次。 四次。
An SVI has been configured on a device. Which two statements are true about a switched virtualinterface (SVI)?() An SVI is normally created for the default VLAN (VLAN1) to permit remote switchadministration。 Multiple SVIs can be associated with a VLAN。 SVI is another name for a routed port。 An SVI is created by entering the no switchport command in interface configuration mode。 An SVI provides a default gateway for a VLAN。
预制外挂墙板安装尺寸,相邻两板表面高低差允许偏差为()。 A.1mm 。 B.2mm 。 C.3mm 。 D.4mm。
下列()交换机功能。 减少数据发送冲突的发生,避免拥挤,提高网络带宽。 放大信号。 数据链路层控制。 路由选择。
r-选择
Your company uses Active Directory-integrated DNS. Users require access to the Internet.You run a network capture.You notice the DNS server is sending DNS name resolution queries to a erver named f.root-servers.net.You need to prevent the DNS server from sending queries to f.root-servers.net. The server must be able to resolve names for Internet hosts.Which two actions should you perform?()