[Nov 14, 2021] ACA-Database Practice Exam Dumps - 99% Marks In Alibaba Cloud Exam

Updated Verified ACA-Database Q&As - Pass Guarantee or Full Refund

Alibaba Cloud ACA-Database Exam Syllabus Topics:

Topic	Details
Topic 1	Common operation of Alibaba Cloud database (database creation, basic operation and maintenance, monitoring, connection, etc.)
Topic 2	From cloud native to cloud dedicate: MyBase database dedicated cluster Development history and future trend of database
Topic 3	Infrastructure, core functions and application scenarios of Alibaba cloud database: Tair (Redis enterprise version) and Apsara DB for MongoDB
Topic 4	Infrastructure, core functions and application scenarios of PolarDB, which is Alibaba Cloud Native database representative Mainstream tools include: ADAM, DTS, DMS, DBS
Topic 5	Database Overview Relational Database NoSQL Data Warehouse ADB database infrastructure, core functions and application scenarios
Topic 6	Core capabilities and basic operations of Alibaba Cloud database tools and utilities Fast construction of cloud native data
Topic 7	DLA infrastructure, core functions and application scenarios Cloud database edition and engine selection how-to
Topic 8	Alibaba Cloud database products portfolio Basic concepts of database (SQL, index, view, transaction, log, etc.)

 

NEW QUESTION 33
When a backup file of core sensitive data is downloaded, business systems must be protected against data breaches. Which of the following capabilities must be enabled to ensure data security?

• A. Virtual private cloud (VPC)
• B. Secure Sockets Layer (SSL) encryption
• C. SOL audit
• D. Transparent Data Encryption (TDE)

Answer: B

 

NEW QUESTION 34
Which are the supported DB engine for PolarDB so far? (The number of answer: 3)

• A. PolarDB for Postgres
• B. PolarDB for Oracle
• C. PolarDB for Mysql
• D. PolarDB for SQLserver

Answer: A,B,C

Explanation:
Explanation
PolarDB is a cloud-native relational database compatible with MySQL, PostgreSQL, and Oracle.
https://www.alibabacloud.com/product/polardb

 

NEW QUESTION 35
Which database utility is used for data migration and synchronization?

• A. DMS
• B. DBS
• C. DAS
• D. ADAM
• E. DTS

Answer: E

Explanation:
Explanation
Data Transmission Service is charged based according to three models: Data Synchronization, Data Migration, Change Tracking. https://www.alibabacloud.com/product/data-transmission-service/pricing

 

NEW QUESTION 36
Which database utility is good for database management and DevOps?

• A. DMS
• B. DTS
• C. DBS
• D. DAS
• E. ADAM

Answer: A

Explanation:
Explanation
Database DevOps Solutions. https://www.alibabacloud.com/product/data-management-service /
https://www.alibabacloud.com/help/doc-detail/190124.htm?spm=a2c63.p38356.b99.40.6ad93d19Xe9h14

 

NEW QUESTION 37
Which of the following data is not collected when database information is collected in Advanced Database & Application Migration (ADAM)?

• A. Database configuration data
• B. Historical performance data
• C. Business data
• D. Business structure data

Answer: C

 

NEW QUESTION 38
Which of the following databases are supported by DTS (Database Transmission Service)? (Number of correct answers: 3)

• A. PostreSQL
• B. SQL Server
• C. MySQL
• D. DB2

Answer: A,B,C

Explanation:
Explanation
DB2 is supported, but very limited.
https://www.alibabacloud.com/help/doc-detail/176064.htm?spm=a2c63.l28256.b99.7.13c27142yYyvXz

 

NEW QUESTION 39
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. True
• B. False

Answer: A

 

NEW QUESTION 40
What is the maximum number of read-only nodes in a PolarDB cluster?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: B

 

NEW QUESTION 41
Which of the following is not a feature or usage scenario of Data Lake Analytics (DLA)?

• A. Batch processing
• B. Online transaction processing
• C. Stream or micro-batch processing
• D. Interactive analysis

Answer: B

 

NEW QUESTION 42
What is the maximum storage size that PolarDB currently provides?

• A. 100TB
• B. 1TB
• C. 10TB
• D. 50TB

Answer: A

Explanation:
Explanation
Each PolarDB cluster supports to scale up to 100 TB. https://www.alibabacloud.com/product/polardb

 

NEW QUESTION 43
Which migration modes are supported by DTS (Data Transmission Service)? (Number of correct answer: 3)

• A. From a different cloud provider to Alibaba Cloud
• B. From RDS to an ECS-based database
• C. From an RDS database, back to itself
• D. From Alibaba Cloud RDS to other database systems

Answer: A,B,D

Explanation:
Explanation
For database backup use DBS.
https://www.alibabacloud.com/help/doc-detail/59133.htm?spm=a2c63.l28256.b99.3.467e7530gZ9M6o

 

NEW QUESTION 44
Which of the following are the benefits of database views? (Number of correct answers: 3)

• A. Stabilization of information: presents a consistent, unchanged image of the database structure
• B. Simplicity in structure: presents the database as a set of virtual tables specific to particular users or groups of users
• C. Easier for data visualization
• D. Simplicity for queries

Answer: A,B,D

 

NEW QUESTION 45
Which of the following is the wrong statement about PolarDB design architecture?

• A. A PolarDB cluster contains one primary instance and up to 15 read-only instances
• B. Read/write splitting is enabled for PolarDB clusters by default, providing transparent, highly available, and self-adaptive load balancing for your database
• C. PolarDB consolidate compute processes and storage processes in one box, allowing the database capacity to scale up and down to meet your application needs in Alibaba Cloud
• D. High speed network connection is enabled between the DB server and the chunk server, and data are transferred using the Remote Direct Memory Access (RDMA) protocol

Answer: C

Explanation:
Explanation
PolarDB decouples compute from storage.
https://www.alibabacloud.com/help/doc-detail/58766.htm?spm=a2c63.p38356.b99.11.4e333181dMpFmV

 

NEW QUESTION 46
DTS (Data Transmission Service) must have access to a database user account on both the target and source database, in order to work.

• A. True
• B. False

Answer: A

Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/26652.htm?spm=a2c63.p38356.879954.26.2ab232664Wkc2m#co

 

NEW QUESTION 47
Which of the following architectures are supported by ApsaraDB for Redis Enhanced Edition (Tair)? (Number of correct answers: 3)

• 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. Single-node architecture
• D. Cluster master-replica instances

Answer: A,B,D

 

NEW QUESTION 48
Data Management (DMS) provides features related to data warehouse development to support task orchestration and recurring scheduling. Which of the following features are being developed? (Number of correct answers: 3)

• A. Data quality
• B. Data directory
• C. Data lineage
• D. Data visualization
• E. Data service

Answer: A,C,E

 

NEW QUESTION 49
You are using DTS to migrate from a MySQL database installed on an ECS instance to a target database on RDS. In the DTS console, which of these is the correct "Instance Type" for the database?

• A. ECS-based Databases
• B. ApsaraDB MongoDB
• C. Express Connect DB
• D. RDS Instance

Answer: D

Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/96154.htm?spm=a2c63.p38356.b99.118.59de5d1aWUVErx

 

NEW QUESTION 50
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 Oracle
• B. PolarDB Box
• C. PolarDB PosgreSQL
• D. PolarDB MySQL

Answer: D

Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/58768.htm?spm=a2c63.l28256.b99.10.71ce3784cXj0y8

 

NEW QUESTION 51
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