As shown in the figure, which of the following descriptions about Keystone authentication are correct? (Multiple choice)

• A.The user will carry the Token when sending a request to create a virtual machine to Nova.
• B.After the virtual machine is created, Nova will return a successful creation message to the user.
• C.After Nova receives the request, it will carry Ioken to Keystone for authentication.
• D.After Neutron and G1ance receive the request, only Neutron will verify the validity of the Token with Keystone.

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In FusionAccess, when the administrator deploys AD/DNS/DHCP, if the AD needs to synchronize the clock with the CNA where the VRM is located, a network card that communicates with the FusionCompute () plane needs to be added.

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In Huawei Cloud Stack, which of the following descriptions about LVS (Linux Virtual Server) are correct? (Multiple choice)

• A.LVS is a four-layer load balancing
• B.The cloud service framework uses the DR (Direct Routing) forwarding mode of LVS
• C.The NAT (Network Address Translation) forwarding mode of LVS is used in the cloud service framework.
• D.LVS is a seven-layer load balancing

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In Huawei Cloud Stack, through the health inspection function of FusionCare, it is generally possible to identify hidden faults before a fault occurs, prevent faults from occurring, and achieve proactive operation and maintenance.

• A.False
• B.True

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The FusionCare tool has added an automated acceptance function. After the HCSD (Huawei Cloud Stack Deploy) deployment project is completed, basic cloud services and high-end cloud services can be commissioned.

• A.False
• B.True

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