A developer is making the ModifyDBInstanceSpec API call to change the specifications of an RDS instance, but the operation fails. Why could this be? (Number of correct answers: 3)

• A.The instance has a backup task being executed
• B.No instance type (specification) was included in the request parameters
• C.The targeted RDS instance is a disaster recovery instance
• D.The instance is in the "running" state

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Which of the following Alibaba Cloud services offers a software-defined wide area network (SD-WAN) solution based on cloud-native technologies?

• A.NAT Gateway
• B.Smart Access Gateway (SAG)
• C.VPN Gateway
• D.Content Delivery Network (CDN)

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Which of the following is NOT required for SMC (Server Migration Center) to migrate a server to Alibaba Cloud?

• A.Import the migration source information to the SMC console
• B.From the SMC console, configure the type of disk image to be generated during the migration
• C.The SMC client transfers the source data to an intermediate ECS instance
• D.The SMC backend service generates a target Alibaba Cloud image based on the migration source

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Alibaba Cloud ActionTrail is a service that monitors and records the actions of your Alibaba Cloud account, including the access to and use of cloud products and services through the Alibaba Cloud console, API operations, and SDKs.

• A.True
• B.False

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How does Cloud Config get permission to gather information about other Alibaba Cloud services?

• A.An Access Key
• B.A RAM Role
• C.By storing a copy of your password
• D.It gets automatic permission to access everything, because it is an Alibaba Cloud service

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