What type of deduplication does the following describe?
Dab blocks are directly stored to the cache when the system is busy and will be deduplicated during off-peak hours. The advantage is that data transmission performance is not affected. The disadvantage is that the extra storage space is required.

• A.Global deduplication
• B.Post-processing deduplication
• C.Inline deduplication
• D.Parallel deduplication

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In data backup scenarios, which are characteristics of disk backup devices, compared with physical tape libraries? (Multiple Choice)

• A.The management and maintenance costs are low.
• B.The backup and restoration performance is high.
• C.Disks where data is stored can be separated from the device that reads and writes data to these disks, implementing offline storage of data
• D.The unit storage cost of a disk is lower than that of a physical tape.

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Before designing a backup solution, you must conduct surveys.
Which aspects should be considered in a survey? (Multiple Choice)

• A.Component selection
• B.Project background
• C.Network environment
• D.Customer requirements

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In Huawei OceanStor 9000, which authentication mode is not supported by NFS sharing?

• A.AD authentication
• B.NIS authentication
• C.LDAP authentication
• D.Client IP address/host name authentication

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Which of the following are hardware faults? (Multiple choice)

• A.Expansion module failure
• B.The disk enclosure failure
• C.BBU failure
• D.Power failure

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