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Alibaba · ACA-DATABASE

Free ACA-DATABASE Exam Dumps Preview

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Question 1

Single choice

What is the maximum storage size that PolarDB currently provides?

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

Reveal answer details Close answer details

Correct answerD

Explanation

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

Question 2

Single choice

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

Reveal answer details Close answer details

Correct answerA

Explanation

Compared with single-zone clusters, multi-zone clusters can enhance disaster recovery capabilities and withstand the breakdown of an entire data center.
https://www.alibabacloud.com/help/doc-detail/122182.htm?spm=a2c63.p38356.879954.4.6f2fa25362cz60#task-1580301

Question 3

Single choice

Alibaba Cloud DTS (Data Transmission Service) can only migrate between databases that are hosted on
RDS.

A
True
B
False

Reveal answer details Close answer details

Correct answerB

Explanation

Alibaba Cloud Data Transmission Service (DTS) helps you migrate data between data stores, such as relational databases, NoSQL databases, and data warehouses. You can use DTS to migrate your data to Alibaba Cloud or between combinations of cloud and on-premises data systems.
https://www.alibabacloud.com/help/doc-detail/176063.htm?spm=a2c63.p38356.b99.6.2ef8c790WL4Jku

Question 4

Single choice

When high availability switchovers occur in a database, which of the following features provided by ApsaraDB RDS for PostgreSQL can prevent the incremental data loss of logical subscriptions?

A
Ganos
B
Pase
C
Slot failover
D
High concurrency optimization
E
Point-in-time restore

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Correct answerE

Question 5

Single choice

Which of the following is not a component of the PolarDB-0 architecture in Apsara Stack?

A
FC Switch
B
SAN
C
Proxy
D
RDMA

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Correct answerB

Question 6

Single choice

Which of the following statements about Data Management (DMS) permissions management is NOT true?

A
You can assign different resources and operation permissions to an Alibaba Cloud account as needed.
B
You must create different database accounts for each Alibaba Cloud account.
C
You cannot directly submit changes even if you have permissions to make changes.
D
The permissions of the accounts of resigned or transferred personnel can be automatically managed by using OpenAPI.

Reveal answer details Close answer details

Correct answerC

Question 7

Single choice

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

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

Reveal answer details Close answer details

Correct answerA

Explanation

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

Question 8

Single choice

Which of the following is not a relational database?

A
Oracle
B
DB2
C
Teradata
D
Redis

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Correct answerD

Question 9

Multiple choice

Which of the following are database architectures which have emerged during the evolution of database systems? (Number of correct answers: 3)

A
Single Instance
B
Shared Nothing
C
Shared Everything
D
Dedicated

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Correct answersB, C, D

Question 10

Single choice

Which of the following tasks cannot be completed by using Advanced Database & Application Migration (ADAM)?

A
De-Oracle workload evaluation
B
Data structure conversion
C
Data migration
D
Performance monitoring

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Correct answerB

Question 11

Multiple choice

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

A
Simplicity for queries
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
Stabilization of information: presents a consistent, unchanged image of the database structure

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Correct answersA, B, D

Question 12

Single choice

Which of the following statements about the compatibility of AnalyticDB for PostgreSQL is NOT true?

A
Support for the Java Database Connectivity (JDBC) protocol
B
Support for the SQL2003 syntax standard
C
Compliance with PostgreSQL and Greenplum protocols
D
Fully compatible with Oracle syntax

Reveal answer details Close answer details

Correct answerD

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ACA Database Certification

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