Which of the following options are the challenges of traditional application operation and maintenance in cloud scenarios? (Multiple choice)

• A.Unable to grasp the user's real experience, poor application experience leads to loss of users
• B.There are many traditional operation and maintenance tools, and the use and maintenance costs are high
• C.Unable to get application logs
• D.Difficulty in analyzing distributed application problems in cloud scenarios

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Regarding the description of VPC, which of the following statement is wrong?

• A.ECS between different subnets of the same VPC can be isolated using security groups or network ACLs
• B.The ESCs of the same VPC and the same subnet communicate with each other by default
• C.ESCs of different subnets from the same VPC do not communicate with each other by default
• D.ESCs in different VPCs do not communicate with each other by default

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Which of the following commands does not fall within the management scope of the docker image lifecycle?

• A.docker exec
• B.docker comit
• C.docker save
• D.docker build

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Which of the following Huawei Cloud services are not in the scope of PaaS? (Multiple choice)

• A.DevCloud
• B.Cloud Desktop
• C.ServiceStage
• D.ECS

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The user must manually bury the point in the service code to enable the Huawei cloud application operation and maintenance service to collect various performance information of the user application.

• A.True
• B.False

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