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Most UptoDate Alibaba Cloud ACA-Database Exam Dumps PDF 2022

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NEW QUESTION 25
Which of the following types of data are most suitable for storage in MySQL databases?

Structured data in rows and columns

Document-oriented unstructured data

Large amounts of time series data

Key-value (KV) data that is frequently read and written

NEW QUESTION 26
What is the maximum storage size that PolarDB currently provides?

1TB

10TB

50TB

100TB

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

NEW QUESTION 27
Your client is having trouble connecting DTS to their source database in their local datacenter, why might this be?

Their database isn’t on Alibaba Cloud already so it cannot be accessed by DTS

Their database is not accessible from the Internet, so DTS cannot access it

Their database must not include the special DTS compatibility mode

Their database is an inverted column store, which is not supported

NEW QUESTION 28
Which of the following are the advantages of cloud databases over self-managed databases? (Number of correct answers: 3)

Stronger service level agreement (SLA)

Integrated operations and maintenance (O&M), as well as easier management

High availability and comprehensive backup and monitoring capabilities

High costs

NEW QUESTION 29
Which of the following types of data that is stored in PostgreSQL databases can support the one-to-many data model? (Number of correct answers: 3)

JSON

Array

String

Cube

Range

JSONB

GIS

NEW QUESTION 30
Which of the following is the most efficient backup in ApsaraDB for MongoDB?

Logical backup

Physical backup

Snapshot backup

Full backup

NEW QUESTION 31
Which of the following statements is NOT correct about the benefits you can gain through PolarDB?

Large storage space

Elastic scaling within minutes

When you add a read-only node in an ApsaraDB for PolarDB cluster, you only need to pay for computing resources

Millisecond-level latency in physical replication

locked backup

Explanation
Lock-free backup.
https://www.alibabacloud.com/help/doc-detail/58768.htm?spm=a2c63.p38356.b99.10.1bcb7338k86bX5

NEW QUESTION 32
With ApsaraDB for MyBase, problems caused by a sudden spike in traffic are automatically resolved. How is this done?

ApsaraDB for My Base allows you to deploy different types of instances in a cluster.

ApsaraDB for MyBase grants you host permissions. You can log on to hosts to troubleshoot business problems in an emergency.

ApsaraDB for MyBase supports the over commitment of CPU and disk resources.

ApsaraDB for MyBase supports elastic upgrade policies. If the resource utilization of a database exceeds the preset threshold during a business peak, ApsaraDB for MyBase can automatically upgrade database resource specifications to respond to the business peak.

ApsaraDB for MyBase allows you to specify a host when you create an instance.

NEW QUESTION 33
Which type of the following logs is used to synchronize data between primary and secondary databases in RDS for MySQL?

Redo log

Rollback log

Binary log

Error log

NEW QUESTION 34
Which of the following are relational databases? (Number of correct answers: 5)

Oracle

MySQL

PostgreSQL

MongoDB

MariaDB

Redis

TSDB

HBase

SQL Server

NEW QUESTION 35
DTS (Data Transmission Service) must have access to a database user account on both the target and source database, in order to work.

True

False

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

NEW QUESTION 36
Which of the following statements about MongoDB is NOT true?

MongoDB is a relational database.

MongoDB is a document database.

MongoDB supports transactions.

MongoDB can be deployed in cluster mode.

NEW QUESTION 37
Which of the following is the core benefit of ApsaraDB for Redis Enhanced Edition (Tair)?

Makes it easy to do business anywhere.

Makes data secure and independently managed.

Makes large amounts of data easier to process.

Makes data accessible online and in real time.

NEW QUESTION 38
lf Oracle databases need to be migrated to Alibaba Cloud, which of the following product solutions :an be recommended? (Number of correct answers: 3)

Use PolarDB-0 that is highly compatible with Oracle.

Use Advanced Database & Application Migration (ADAM) to evaluate the migration project.

Use ApsaraDB for Redis as a cache service to provide acceleration capabilities.

Use Data Transmission Service (DTS) to migrate data.

NEW QUESTION 39
Which of the following is NOT true, regarding DTS (Database Transmission Service)?

DTS cannot be used for incremental database synchronization

DTS supports multiple database engines

DTS can migrate both data and table schema

DTS works for database both on and off Alibaba Cloud

Explanation
https://www.alibabacloud.com/help/doc-detail/56776.htm?spm=a2c63.p38356.b99.181.74896b5dro6cDo

NEW QUESTION 40
Why is ApsaraDB for PolarDB better than other traditional database engines? (The number of answer: 3)

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

PolarDB supports both OLTP and OLAP scenarios very well

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

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

Explanation
Kernel Features: OLTP performance.
https://www.alibabacloud.com/help/doc-detail/172293.htm?spm=a2c63.p38356.b99.81.101b333ePsD0YF

NEW QUESTION 41
Which of the following statements about AnalyticDB for MySQL is true?

AnalyticDB for MySQL is a NoSQL database.

AnalyticDB for MySQL can be used to build enterprise-grade data warehouse projects.

AnalyticDB for MySQL can be used to build online transaction systems.

AnalyticDB for MySQL supports transactions.

NEW QUESTION 42
Which of the following are the benefits of database views? (Number of correct answers: 3)

Simplicity for queries

Simplicity in structure: presents the database as a set of virtual tables specific to particular users or groups of users

Easier for data visualization

Stabilization of information: presents a consistent, unchanged image of the database structure

NEW QUESTION 43
Which of the following architectures are supported by ApsaraDB for Redis Enhanced Edition (Tair)? (Number of correct answers: 3)

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

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

Cluster master-replica instances

Single-node architecture

NEW QUESTION 44
What is the maximum number of read-only nodes in a PolarDB cluster?

NEW QUESTION 45
Which of the following are database architectures which have emerged during the evolution of database systems? (Number of correct answers: 3)

Single Instance

Shared Nothing

Shared Everything

Dedicated

NEW QUESTION 46
Each PolarDB cluster consists of one primary node and one or more read-only nodes. The system only support manually switch over services from the primary node to a read-only node.

True

False

Explanation
PolarDB cluster supports Manually and Automatically switch over services between primary and read-only nodes.
https://www.alibabacloud.com/help/doc-detail/141229.htm?spm=a2c63.p38356.b99.113.36df231dK2DVX0

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Alibaba Cloud ACA-Database Exam Syllabus Topics:

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

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Category ACA-Database

Most UptoDate Alibaba Cloud ACA-Database Exam Dumps PDF 2022 [Q25-Q46]

Alibaba Cloud ACA-Database Exam Syllabus Topics: