Alibaba ACA-Database practice materials Questions Answers

Exam Code:
ACA-Database
Exam Name:
ACA Database Exam
Last Update:
Jun 01,2026

80 Questions Answers Verified by Experts!


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Page: 1 / 16
Total Questions: 80

Questions & Answers PDF

• Question 1

  

  You want to migrate from MySQL to PostgreSQL: is this supported by DTS?

  • No, this type of migration isn't supported
    
  • You can migrate between MySQL and Oracle but not between PostgreSQL
    
  • Yes, migration between different types of databases is supported by DTS
    

  Reveal Answer Answer: 3 Next Question

• Question 2

  

  Which are the supported DB engine for PolarDB so far? (The number of Answer: 3)

  • PolarDB for Mysql
    
  • PolarDB for Postgres
    
  • PolarDB for SQLserver
    
  • PolarDB for Oracle
    

  Reveal Answer Answer: 1,,2,,4 Next Question

• Question 3

  

  Which of the following statements about Data Transmission Service (DTS) migration scenarios is NOT true?

  • DTS can migrate data in a circular way, for example, A > B > C > A.
    
  • DTS can migrate data from one source database to one destination database, for example, A > B.
    
  • DTS can migrate data from one source database to several destination databases, for example, A > B and A > C.
    
  • DTS can migrate data from several source databases to one destination database, for example, A > C and B > C.
    

  Reveal Answer Answer: 1 Next Question

• Question 4

  

  Which of the following statements is NOT correct about the benefits you can gain through PolarDB?

  • Large storage space
    
  • Elastic scaling within minutes
    
  • When you add a read-only node in an ApsaraDB for PolarDB cluster, you only need to pay for computing resources
    
  • Millisecond-level latency in physical replication
    
  • locked backup
    

  Reveal Answer Answer: 5 Next Question

• Question 5

  

  Which of the following is the most efficient backup in ApsaraDB for MongoDB?

  • Logical backup
    
  • Physical backup
    
  • Snapshot backup
    
  • Full backup
    

  Reveal Answer Answer: 2 Next Question

• Question 6

  

  Which of the following architectures are supported by ApsaraDB for Redis Enhanced Edition (Tair)? (Number of correct answers: 3)

  • Master-replica architecture in which standard master-replica instances are deployed
    
  • Read/write splitting architecture in which standard master-replica instances are deployed
    
  • Cluster master-replica instances
    
  • Single-node architecture
    

  Reveal Answer Answer: 1,,2,,3 Next Question

• Question 7

  

  Which of the following features is NOT supported by Data Transmission Service (DTS)?

  • Data migration
    
  • Data synchronization
    
  • Data backup
    
  • Change tracking
    

  Reveal Answer Answer: 4 Next Question

• Question 8

  

  Which of the following features are provided by PolarDB-O's proxy? (Number of correct answers: 4)

  • Read/write splitting
    
  • Load balancing
    
  • Health checks for nodes
    
  • Failover strategies for high availability
    
  • Data encryption
    

  Reveal Answer Answer: 1,,2,,3,,4 Next Question

• Question 9

  

  Which of the following is the core benefit of ApsaraDB for Redis Enhanced Edition (Tair)?

  • Makes it easy to do business anywhere.
    
  • Makes data secure and independently managed.
    
  • Makes large amounts of data easier to process.
    
  • Makes data accessible online and in real time.
    

  Reveal Answer Answer: 4 Next Question

• Question 10

  

  What is the maximum storage size that PolarDB currently provides?

  • 1TB
    
  • 10TB
    
  • 50TB
    
  • 100TB
    

  Reveal Answer Answer: 4 Next Question

Page: 1 / 16
Total Questions: 80

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