Online Access Free ACA-Developer Practice Test

Which of the following permission control policies does Object Storage Service (OSS) provide for access to objects stored in a bucket? (Number of correct answers: 4)

• A.IntranetAccess
• B.Bucket Policy
• C.ACL
• D.RAM Policy
• E.STS authorization
• F.Dynamic blacklist
• G.Object Policy

Which of the following descriptions of the principles of Alibaba Cloud SSL certificate private key protection is correct?

• A.The plaintext of Alibaba Cloud's private key is usually stored on disk and backed up regularly
• B.Alibaba Cloud uses the built-in functionality of the SSL certificate service to encrypt and store the private key to certificates private key
• C.Alibaba Cloud Certificate Service keys are loaded Into memory in plaintext format ONLY when needed
• D.Alibaba Cloud Certificate Service uses symmetric encryption to save the certificate private key

What are the advantages of using Elastic Container Instance (ECI) to deploy applications compared with using ECS? (Number of correct answers; 2)

• A.Low maintenance, low costs
• B.Less significant visualization layer performance losses
• C.Startup in seconds without the need to reserve resources
• D.Stronger isolation between instances

A mobile application developer intends to use Alibaba Cloud Object Storage Service (OSS) to store the end user data for their app, and to ensure data isolation between each user of the app, to prevent one user from obtaining another's data. Which method can be done to meet these requirements?

• A.Bucket Policy
• B.RAM Policy
• C.STS authorization
• D.Object Policy

During the process of backing up an RDS database, a developer found that the backup failed. What might cause this to happen?

• A.The database instance is not stopped
• B.DDL operations were performed during the backup
• C.DML operations were performed during the backup
• D.DCL operations were performed during the backup