In OpenStack, virtual machines are attached to the Network through Ports, and each Port can be assigned an IP address and Mac address.

• A.True
• B.False

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Which of the following descriptions of Ceilometer data management is incorrect?

• A.Polling Agent will regularly and proactively obtain the required measurement data from different remote or local service entities through various APIs or other communication protocols according to the configuration.
• B.Alarm Evaluator will periodically check whether the relevant alarm conditions of other warnings (Alarm) other than event types are met.
• C.Alarm Notifier performs user-defined actions when the alarm conditions of the alarm are met.
• D.The measurement data obtained by Polling Agent needs to be sent to Notification Bus, which converts them into Ceilometer samples or events.

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In Huawei Cloud Stack, which of the following descriptions about the comparison between elastic file service SFS and elastic cloud disk service EVS are correct? (Multiple choice)

• A.Data access to SFS and EVS must be within the data center internal network
• B.Compared with a single SFS file system, a shared cloud disk can be mounted to a larger number of ECS for simultaneous use.
• C.A single SFS file system can be mounted to a larger number of ECS for simultaneous use than a shared cloud disk.
• D.Both SFS and EVS support data sharing

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Which of the following descriptions of OpenStack virtual machine instance Suspend and Pause is incorrect?

• A.Suspend and Pause both suspend the running of the virtual machine instance and save the current state of the virtual machine instance, which can be restored later by performing the Resume operation.
• B.The Resume corresponding to Pause is called "Unpause" inside penStack, while the Resume corresponding to Suspend is the real "Resume"
• C.After the virtual machine instance is Suspended, the Power State is Shut Down, while the Paused virtual machine instance is Paused.
• D.Pause saves the current state of the virtual machine instance in the host disk, while suspend saves the current state of the virtual machine instance in the host memory.

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In Huawei Cloud Stack, when the cloud server in the VPC needs to provide services to the external network, which of the following NAT gateway rules can be configured?

• A.DNAT
• B.SNAT
• C.HNAT
• D.QNAT

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