In Huawei Cloud Stack, the cloud resolution service CloudDNS can support the resolution of internal and external network domain names.

• A.True
• B.False

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In OpenStack, which of the following descriptions of Provider Network and Self-service Network in Neutron are correct? (Multiple choice)

• A.Routed provider network provides Layer 3 connections to instances. Routed provider network maps to multiple Layer 2 network segments. Each network segment is essentially a Provider Network.
• B.Self-service Network requires a virtual router to interact with Provider Network and external networks (such as the Internet)
• C.The network segments in different Self-service Networks cannot be the same.
• D.By default, Provider Network requires the configuration of physical network infrastructure, so only OpenStack administrators can create or update Provider Network

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In Huawei Cloud Stack, a virtual machine in the cloud platform has a network interruption. As an operation and maintenance person, in order to troubleshoot and locate the root cause of the problem, which of the following tools or platforms is recommended to be the most suitable?

• A.FusionCare
• B.Auto0ps
• C.CloudNetDebug
• D.eSight

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Virtual machine instances in OpenStack must be configured with different IP addresses, otherwise IP address conflicts will occur.

• A.False
• B.True

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Huawei Cloud Stack uses cloud federation hybrid cloud to cope with elastic business expansion and business hierarchical deployment scenarios. Which of the following descriptions of the above scenarios is wrong?

• A.Tenants deploy front-end services on Huawei Cloud Stack to support large-scale Internet access, deploy back-end or core services on Huawei Cloud, and use Huawei Cloud's security service system to protect data security.
• B.When business grows explosively, Huawei Cloud Stack cannot quickly meet business resource needs. You can use cloud federation hybrid cloud to extend the business from Huawei Cloud Stack to Huawei Cloud to meet the elastic expansion needs of the business.
• C.Tenants deploy front-end services on Huawei Cloud and use Huawei Cloud's resource elasticity and security system to support large-scale Internet access. Back-end services and important data are deployed offline to avoid leakage.
• D.When the business is expanding globally, Huawei Cloud Stack cannot meet the needs of overseas branches for quick online service and nearby access. You can use Cloud Federation Hybrid Cloud to extend the business from Huawei Cloud Stack to Huawei Cloud to achieve rapid online business for overseas branches. Need for nearby access

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