If a physical machine is virtualized into multiple virtual machines, the physical machine is called the Host Machine, and the OS running on it is called the Host OS; the virtual machine is called the Guest Machine, and the OS running on it is called the Guest OS.

• A.True
• B.False

Comment: *

Name: *

Email: *

Verification: *

In HUAWEI Cloud, elastic cloud server instances and extended elastic network cards can belong to different VPCs or security groups.

• A.True
• B.False

Comment: *

Name: *

Email: *

Verification: *

Elastic scaling services can automatically adjust their business resources through strategies based on users' business needs.

• A.True
• B.False

Comment: *

Name: *

Email: *

Verification: *

The user deploys an ECS instance on HUAWEI CLOUD and deploys service A on it. When service A no longer needs to provide services, the user wants to deploy service B on the ECS with an operating system different from that used by service A. At this time, the system disk of the ECS needs to be replaced. In the process of performing this operation, which of the following descriptions are correct? (Multiple choice)

• A.After replacing the system disk, the snapshot of the existing system disk and the data on it will be lost
• B.In the case of a data disk, if the Windows system is replaced with a Linux system, since Linux cannot recognize the NTFS format by default, it is necessary to install a software recognition software separately.
• C.After replacing the system disk, the IP address of the ECS will change.
• D.When replacing the system disk, you can choose a private image or a public image

Comment: *

Name: *

Email: *

Verification: *

Which of the following methods can Huawei Cloud tenants use to solve the problem of insufficient disk capacity of relational databases?

• A.Expand disk capacity
• B.Reinstall the operating system
• C.Switch operating system
• D.Change the database instance

Comment: *

Name: *

Email: *

Verification: *