Regarding the characteristics of the four disaster recovery modes of active-active, hot standby, warm standby, and cold standby, which of the following statement is wrong?

• A.Hot standby mode requires the highest software cost.
• B.When the service is unavailable due to a data center failure, the hot standby and active-active modes can automatically switch services with software, while the warm standby mode requires manual intervention, and the cold standby mode requires strong manual intervention.
• C.The data center with the active-active mode has the shortest RTO time.
• D.The RTO time of the data center adopting the cold standby mode is long and unpredictable.

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iSCSI encapsulates SCSI commands and data description blocks into the iSCSI protocol.

• A.True
• B.False

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What is the function of using multi-path software? (Multiple choice)

• A.Failed path recovery
• B.Data recovery
• C.Load balancing of IO traffic
• D.Failure path switching

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Xiao Wang, an employee of a small company, uses the CIFS protocol to access shared files on the Linux application server supported by his company's storage system.

• A.True
• B.False

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In the backup system, the backup data center needs to pass through the media server before it can be transferred to the storage system.

• A.False
• B.True

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