Question 1

Which migration modes are supported by DTS (Data Transmission Service)? (Number of correct answer: 3)

Options :

A : From Alibaba Cloud RDS to other database systems

B : From RDS to an ECS-based database

C : From a different cloud provider to Alibaba Cloud

D : From an RDS database, back to itself

Answer: A,B,C

Question 2

Which of the following are NOT true, regarding DTS (Data Transmission Service)? (Number of correct

answers: 2)

Options :

A :

The source and destination database must use the same database engine

B : The source and destination database must both have a database user which DTS can use

C :

If the source database is not on Alibaba Cloud, it must be Internet accessible so that DTS can connect to

it

D : DTS is designed for file synchronization

Answer: A,D

Question 3

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

of correct answers: 3)

Options :

A : Master-replica architecture in which standard master-replica instances are deployed

B : Read/write splitting architecture in which standard master-replica instances are deployed

C : Cluster master-replica instances

D : Single-node architecture

Answer: A,B,C

Question 4

If a database exception occurs in a PolarDB cluster because important data is deleted by mistake, how i can data be restored?

Options :

A : Level-2 backup + Redo log

B : Level 1 backup + Redo log

C : Level-2 backup

D : Level-1 backup

Answer: A

Question 5

Which of the following architectures is not supported by ApsaraDB RDS for MySQL?

Options :

A :

The single-node Basic Edition architecture, which can be used in test and non-core production

environments

B :

The high-avail ability architecture, in which primary and read-only nodes are deployed to implement

automatic failovers

C : The three-node Enterprise Edition architecture, which ensures zero data loss

D :

The serverless architecture, in which computing resources are charged based on the Pay-As-You-Go

(PAYG) billing method

Answer: D

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