IOPS is a key indicator to measure storage performance. Which of the following options will not affect the IOPS of the storage system?

• A.Hard disk type
• B.IO features
• C.RAID level
• D.Hot spare space size

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File system backup needs to consider compatibility issues. Which of the following statements is wrong?

• A.Use a new version of the backup software. If the operating system version is too old, an updated version is required.
• B.It is necessary to confirm the type and version of the operating system and file system of the backup source.
• C.The operating system or application version is too new, you can wait to update the backup software version.
• D.If the application is not in the backup software compatibility list, you can export the application data to a file by other means, and then back up the file.

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Backup can be regarded as a low-level disaster tolerance. Backup is the basis of disaster tolerance, and disaster tolerance can replace backup.

• A.False
• B.True

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If the Huawei N8000 clustered NAS system has 6 engine nodes and 4 5500T back-end storage, each engine node has 8 service network ports, how many IP addresses need to be planned in total?

• A.105
• B.104
• C.106
• D.103

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Users of object storage service (compatible with OpenStack Swift APIs) are managed and authenticated by the Keystone server. Registering, creating, and deleting an account must also be performed on the Keystone server.

• A.FALSE
• B.TRUE

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