[多选] Which of the following statements are true regarding Layer 3 switches？（Choose all that apply.）（）

A . A routed port does not run STP or DTP
B . A routed port is considered to be in a down state if it is not operational at both Layer 1 andLayer 2
C . An SVI is considered to be in a down state if it is not operational at both Layer 1 and Layer 2
D . An SVI is considered to be in a down state only when none of the ports in the correspondingVLAN are active
E . An SVI port does not run 5TP or DTP
F . To create a trunk， an SVI can be logically divided into subinterface

进口替代战略经营第（）类医疗器械的企业，应当具有符合医疗器械经营质量管理要求的计算机信息管理系统。一类。二类。三类。人机对话界面主要的类型有：（）、命令式、（）、应答式。 You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. On two cluster-ready nodes, you intend to perform an installation of a SQL Server 2008 mission-critical cluster. Constant availability is needed by the mission-critical cluster. You have to configure the SQL Server cluster to failover and reduce the service disruption to the least. Which failover option should you use?（） You should allow failback only during non-business hours 。 You should immediately allow failback。 You should prevent automatic failback 。 You should allow failback only during business hour。在生产过程中，控制尘毒危害的最重要的方法是（）生产过程密闭化。通风。发放保健食品。防尘。 Which of the following statements are true regarding Layer 3 switches？（Choose all that apply.）（）

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[多选] Which of the following statements are true regarding Layer 3 switches？（Choose all that apply.）（）

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