In the Huawei dual-active disaster recovery solution, which of the following situations must use Fibre Channel connection?

• A.The distance between the two data centers is more than 25 kilometers and the number of optical fiber connections is less than 4 pairs
• B.The distance between the two data centers is less than 25 kilometers and the number of fiber connections is less than 4 pairs
• C.The distance between the two data centers is more than 25 kilometers and the number of fiber connections is more than 4 pairs
• D.The distance between the two data centers is less than 25 kilometers and the number of fiber connections is more than 4 pairs

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Which of the following statements about OceanStor BCManager eReplication are correct?
1. The version of JRE installed in the maintenance terminal where the eReplication client resides is 1.2.0_51 or later.
2. The eReplication client requires a trusted code signature.

• A.Statement 1 is false, Statement 2 is true.
• B.Statement 1 is false. Statement 2 is false,
• C.Statement 1 is true. Statement 2 is false.
• D.Statement 1 is true. Statement 2 is true.

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In the Huawei HyerMetro active-active solution, when the active-active data center link fails, it will enter the "standby state". In order to quickly restore services, you can choose to force start the local storage system or the remote storage system to continue to provide services for the host. At this time, the active-active service status will enter "normal".

• A.True
• B.False

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If a customer wants to buy a Huawei storage for video surveillance and backup and archive data services, which indicator is recommended to choose the appropriate Huawei storage device?

• A.CPU utilization
• B.Bandwidth
• C.Delay
• D.IOPS

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Which of the following options is not a challenge for big data analysis?

• A.Traditional IT architecture cannot provide enough storage space for the rapidly increasing amount of data
• B.Massive data puts forward higher requirements for fast, efficient and real-time data analysis
• C.Traditional analysis methods are not suitable for the analysis of big data types
• D.The high-capacity requirements that need to have a one-stop solution

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