How can ApsaraDB for MyBase solve problems in database security and performance interferences in the multi-tenant scenario?

A. ApsaraDB for MyBase supports resource over commitment.

B. Instances can be migrated. You can manually migrate instances to idle hosts.

C. Isolated hosts are used. A host runs only your instances and does not run instances of other users.

D. ApsaraDB for MyBase allows you to distribute different types of instances at a time.

Which of the following features determines high performance of the performance-enhanced instances of ApsaraDB for Redis Enhanced Edition (Tair)?

A. Extended data structure modules

B. Multithreading

C. Global Replica

D. Data flashback

What is the maximum storage size that PolarDB currently provides?

A. 1TB

B. 10TB

C. 50TB

D. 100TB

Which of the following are features supported by Alibaba Cloud RDS for MySQL? (The number of Answer: 3)

A. Read-Write Splitting -> https://www.alibabacloud.com/help/docdetail/96047.htm?spm=a2c63.p38356.b99.57.500dc3c6Kt0QLs

B. Local Snapshot Backup-> Snapshot Backup is Cloud disk instance. Cross-region backup is Local disk instance.

C. Computing nodes and Storage totally seperated-> In the Basic Edition, your database system consists of only one primary RDS instance, and computing is separated from storage. This edition is cost-effective. https://www.alibabacloud.com/help/docdetail/48980.html?spm=a2c5t.11065259.1996646101.searchclickresult.75a932dfvCBnlt

D. Multi-Zone Deployment ->You can select the Single-zone Deployment or Multizone Development method. https://www.alibabacloud.com/help/docdetail/26092.htm?spm=a2c63.p38356.b99.18.118b4437l50tDl

You have a client that wants to move from another cloud provider's database service to RDS. Which of these is the best way to move their database to Alibaba Cloud?

A. Use DTS (Data Transmission Service)

B. Make a full physical backup of their database and copy it into OSS

C. This type of migration isn't possible

D. Migrate the entire VM hosting the database

Which of the following scheduling tools are supported by AnalyticDB for MySQL? (Number of correct answers: 2)

A. DMS

B. Data Works

C. MaxCompute

D. QuickBl

Why is ApsaraDB for PolarDB better than other traditional database engines? (The number of answer: 3)

A. When you purchase a PolarDB cluster, you don't need to specify the storage capacity you want to purchase

B. PolarDB supports both OLTP and OLAP scenarios very well

C. The PolarDB database engine won't require you to replicate data when adding read-only nodes

D. ApsaraDB for PolarDB uses the pay-as-you-go billing method, therefore you only need to pay for the storage resources you actually use

Your DTS (Data Transmission Service) migration has failed halfway through: what options do you have? (Number of correct answers: 2)

A. Delete your DTS instance and start over

B. Restart the migration task from the console

C. Your database can't be migrated: you need to abandon the migration

D. You need to switch to ADAM, as DTS cannot complete the migration

Suppose you are using MySQL currently, if you want to migrate to cloud native database PolarDB with little effort, which one is the best choice?

A. PolarDB MySQL

B. PolarDB PosgreSQL

C. PolarDB Oracle

D. PolarDB Box

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

A. DTS can migrate data in a circular way, for example, A > B > C > A.

B. DTS can migrate data from one source database to one destination database, for example, A > B.

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

D. DTS can migrate data from several source databases to one destination database, for example, A > C and B > C.