The following description of DAS is incorrect:

• A.External DAS can be connected to the server accessing them through FC protocol or SCSI protocol
• B.The hard disk inside the server is not DAS
• C.DAS is directly connected to the designated storage device on the server using them
• D.DAS is divided into internal DAS and external DAS

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In the Huawei OceanStor V3 storage system, which of the following descriptions about mapping snapshot LUNs is correct?

• A.The description of all options is correct
• B.The snapshot LUN can only be mapped to the same host as the original LUN
• C.The snapshot LUN mapped to the host can only be read, not written
• D.The activated snapshot LUN can be mapped to the host for reading and writing

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Which of the following is wrong about FC SAN network switching technology?

• A.A widely used technology that supports up to 127 devices
• B.The switch can provide simultaneous communication between multiple nodes connected to it
• C.Failure of a node in a zone will not affect the services of nodes in other zones
• D.The switch uses the zone to manage the network partition and provide the best interconnection method

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The storage controller can only provide processing and caching functions.

• A.FALSE
• B.TRUE

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Which device allows segregation of collision domains but not broadcasting domains?

• A.Hub
• B.L3 Switches
• C.L2 Switches
• D.Router

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