Which authentication modes are supported by the NFS service of Huawei OceanStor 9000? (Multiple Choice)

• A.NIS authentication
• B.Global authentication
• C.AD domain authentication
• D.Local authentication
• E.LDAP domain authentication

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Which of the following statements about SmartDedupe is true:

• A.A file can be either deduped, or compressed. Not both.
• B.The calculations involved in deduplication should be offloaded to a separate processor.
• C.SmartDedupe for Block Systems only works on data that has already been written to disk.
• D.SmartDedupe for File Systems only works on data that has already been written to disk.

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Regarding the compression function of Huawei Distributed Information Block Service, which of the following statement is correct?

• A.Only one compression algorithm can be selected in the same storage pool
• B.The compression engine uses a combination of three different compression algorithms to run
• C.Modification of the storage pool compression algorithm will affect the compressed data
• D.Multiple compression algorithms can be selected in the same storage pool to improve compression speed and ratio

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File-level deduplication is also known as single instance storage (SIS). Based on indexes, file-level deduplication checks and compares the attributes of a file that needs to be stored with those of files that have been stored. If the file has not been stored, file-level deduplication stores the file and updates indexes, Otherwise, file-level deduplication only stores the pointers that point to the existing file.

• A.FALSE
• B.TRUE

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Which of the following description of the principles of making a backup strategy is wrong?

• A.Measure the data retention period based on the amount of data
• B.Measure task execution time based on the amount of data change
• C.Measure the frequency of data backup based on the importance of the data
• D.Measure backup media based on the discreteness of data

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