Which of the following descriptions of SAN and NAS are correct? (Multiple choice)

• A.The characteristic of NAS is to put the file system of the server in the storage, so that the server can share data through the network.
• B.SAN is more used in the database scenario to store this structured data
• C.DAS, NAS and SAN are all external storage, so storage resource sharing can be easily realized.
• D.Now NAS is a storage for unstructured data, such as shared file servers used by employees in many departments for key office document sharing and centralized storage.

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The cloudification of IT architecture is moving from "separation" to "convergence". What does convergence mean?

• A.Convergence of applications and servers
• B.Multi-application sharing, open "cloud computer"
• C.Convergence of IT infrastructure
• D.Convergence of hardware and software

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Engineer A configures a snapshot of the business data LUN of the Huawei Ocaenstor hybrid flash memory system. Which of the following steps are correct? (Multiple Choice)

• A.Set snapshot description information
• B.Confirm that the snapshot license is within the validity period
• C.Create a pair of snapshots
• D.Create a snapshot

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Data processing includes the following basic steps: input, processing, and output. Which of the following options belong to the processing steps? (Multiple Choice)

• A.Enter calculation data into the database
• B.Calculate salary based on employee attendance records
• C.Calculate the current month's sales summary based on the sales order
• D.Print employee's salary receipt

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The amount of data backed up by incremental backup is greater than that of differential backup.

• A.True
• B.False

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