最新なAlibaba Cloud ACA-Database問題集（82題）、真実試験の問題を全部にカバー！

質問 1：
Which of the following are database architectures which have emerged during the evolution of database systems? (Number of correct answers: 3)
A. Dedicated
B. Shared Everything
C. Single Instance
D. Shared Nothing
正解：A,B,D

質問 2：
You can purchase more read-only nodes after you have created a cluster. If the primary node fails, the system automatically promotes the read-only node with the highest failover priority to become the new primary node while restoring the faulty node.
A. False
B. True
正解：B
解説: (Pass4Test メンバーにのみ表示されます)

質問 3：
Which of the following is not a component of the PolarDB-0 architecture in Apsara Stack?
A. RDMA
B. SAN
C. FC Switch
D. Proxy
正解：B

質問 4：
Your client is having trouble connecting DTS to their source database in their local datacenter, why might this be?
A. Their database isn't on Alibaba Cloud already so it cannot be accessed by DTS
B. Their database is an inverted column store, which is not supported
C. Their database must not include the special DTS compatibility mode
D. Their database is not accessible from the Internet, so DTS cannot access it
正解：D

質問 5：
Which of the following tools can be used to migrate an on-premises database to Alibaba Cloud while causing minimal service downtime?
A. pg_dump
B. pg_upgrade D.DTS
C. pg_basebackup
D. pg_restore
正解：C

質問 6：
Which of the following is the core benefit of ApsaraDB for Redis Enhanced Edition (Tair)?
A. Makes large amounts of data easier to process.
B. Makes data secure and independently managed.
C. Makes it easy to do business anywhere.
D. Makes data accessible online and in real time.
正解：D

質問 7：
Which migration modes are supported by DTS (Data Transmission Service)? (Number of correct answer: 3)
A. From Alibaba Cloud RDS to other database systems
B. From an RDS database, back to itself
C. From RDS to an ECS-based database
D. From a different cloud provider to Alibaba Cloud
正解：A,C,D
解説: (Pass4Test メンバーにのみ表示されます)

質問 8：
Which of the following architectures is not supported by ApsaraDB RDS for MySQL?
A. The single-node Basic Edition architecture, which can be used in test and non-core production environments
B. The three-node Enterprise Edition architecture, which ensures zero data loss
C. The serverless architecture, in which computing resources are charged based on the Pay-As-You-Go (PAYG) billing method
D. The high-avail ability architecture, in which primary and read-only nodes are deployed to implement automatic failovers
正解：C

質問 9：
Which database utility is used for data migration and synchronization?
A. DBS
B. DMS
C. DTS
D. ADAM
E. DAS
正解：C
解説: (Pass4Test メンバーにのみ表示されます)