Which of the following are Huawei DR Solutions? (Multiple Choice)

• A.Local HA Solution
• B.Active-Passive DR Solution
• C.Active-Active DC Solution
• D.Geo-Redundant Solution

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Which of the following statements about the Thin LUN and multi-select Thick LUN of Huawei Oceanstor storage are wrong? (Multiple choice)

• A.Both Thick LUN and Thin LUN can be greater than or equal to the available capacity of the storage pool where they are located
• B.Both Thick LUN and Thin LUN need to be configured with initial capacity
• C.Both Thick LUN and Thin LUN can be created in batches
• D.Both Thick LUN and Thin LUN can be configured in the same storage pool

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When configuring a backup data retention policy, you must consider the retention period, retention cycles, and number of write streams.

• A.FALSE
• B.TRUE

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A company wants to deploy a big data platform. It is estimated that the number of files in the entire cluster can reach trillions, and the number of files in a single NameNode exceeds 100 million. The use of the native HDFS MameNode master/standby mode can meet the demand.

• A.False
• B.True

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Which of the following statements about data backup policies are true? (Multiple Choice)

• A.Differential incremental backup is used to back up data changes made between two backups.
• B.Each backup needs a full backup as the basis.
• C.Differential incremental backup minimizes the use of backup space.
• D.In the same scenario, synthetic backup outperforms incremental backup in terms of restoration time.

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