Which of the following roles adopt active/standby deployment in a FusionSphere OpenStack control cluster?
(Multiple choice)

• A.GaussDB
• B.ZooKeeper
• C.RabbitMQ
• D.MongoDB

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Huawei establishes a three-dimensional information security system for cloud computing from various aspects, such as the access client, access network, virtual platform, management.

• A.True
• B.False

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Which of the following is correct about the understanding of backup and disaster recovery?

• A.Data can be placed in different areas to achieve disaster tolerance
• B.Data backup needs to put production storage and backup storage in the same room
• C.As long as data transmission, data storage and data exchange occur, data failure may occur, which in turn affects the use of services. Therefore, data backup is required to ensure data security.
• D.Disaster recovery or backup can ensure that data will not be lost

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In Huawei FusionCloud desktop cloud solutions, virtual desktop online backup generally use eBackup, which of the following statement is correct? (Multiple choice)

• A.Can be divided into management plane and business plane.
• B.Each network plane must be configured with different VLANs to isolate each other.
• C.eBackup is often used in conjunction with FusionCompute to enable a specified object to be backed up by a specified policy.
• D.When FusionStorage is production storage, eBackup (including the backup server and backup agent) need to achieve the interoperability between VRM and FSM.

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The company needs to control the permissions of virtual machine resources in the FusionCompute cluster. Which of the following are incorrect about the description of virtual machine resources? (Multiple Choice)

• A.You can set the upper limit of the use of resources for the virtual machine, including CPU, memory, network and disk IOPS and so on.
• B.The network QoS policy provides bandwidth configuration control capabilities and does not support traffic restrictions between virtual machines on the same host.
• C.If the host has enough memory, the virtual machine's memory request can be unrestricted; if the host has insufficient memory, it is allocated according to the memory level and share.
• D.A single physical core of the CPU can be assigned to a single virtual machine.

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