Free Access AlibabaCloud.ACA-Database.v2022-02-14.q26 Practice Test (Page 6)

Question 21

Alibaba Cloud DTS (Data Transmission Service) supports both full database migration and incremental synchronization.

A.True

B.False

Question 22

PolarDB for MySQL uses shared distributed storage and supports dual-zone deployment by default. How many data replicas are available across the two zones?

A.5

B.4

C.6

D.3

Question 23

PolarDB for MySQL allows you to deploy a cluster across multiple zones. Compared with single-zone clusters, multi-zone clusters have better disaster recovery capabilities and can withstand data centre-level faults.

A.False

B.True

Question 24

Which type of the following logs is used to synchronize data between primary and secondary databases in RDS for MySQL?

A.Redo log

B.Rollback log

C.Binary log

D.Error log

Question 25

Which of the followings is NOT a correct way to connect to PolarDB?

A.Use the command line like 'mysql' to connect to a cluster

B.Use DMS to connect to a cluster

C.Use a client like HeidiSQL to connect to a cluster

D.Use PolarDB console to log into a cluster

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