ACA-Database Exam Dumps – Try Best ACA-Database Exam Questions from Training Expert PrepAwayTest [Q36-Q58]

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ACA-Database Exam Dumps – Try Best ACA-Database Exam Questions from Training Expert PrepAwayTest

Practice Examples and Dumps & Tips for 2022 Latest ACA-Database Valid Tests Dumps

NO.36 If a database exception occurs in a PolarDB cluster because important data is deleted by mistake, how i can data be restored?

Level-2 backup + Redo log

Level 1 backup + Redo log

Level-2 backup

Level-1 backup

NO.37 Which of the following is the wrong statement about PolarDB design architecture?

A PolarDB cluster contains one primary instance and up to 15 read-only instances

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

Read/write splitting is enabled for PolarDB clusters by default, providing transparent, highly available, and self-adaptive load balancing for your database

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

NO.38 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

NO.39 Alibaba Cloud DTS (Database Transmission Service) only supports MySQL databases.

True

False

NO.40 Which of the following features are provided by PolarDB-O’s proxy? (Number of correct answers: 4)

Read/write splitting

Load balancing

Health checks for nodes

Failover strategies for high availability

Data encryption

NO.41 Which of the following is the high-availability service level that is specified in the ApsaraDB RDS Service Level Agreement (SLA)?

90%

99%

99.5%

99.99%

NO.42 Which of the following is NOT true, regarding the sensitive data management feature provided by Data Management (DMS)?

The rules of field metadata and data content can be automatically recognized.

De-identification algorithms can be managed. Multiple algorithms are supported, such as algorithms for masking specific positions and replacing fixed characters.

Field-level and row-level permissions are supported.

After you configure de-identification algorithms, you can view the de-identified data.

NO.43 Which of the following features is NOT supported by Data Transmission Service (DTS)?

Data migration

Data synchronization

Data backup

Change tracking

NO.44 Which of the following statements about Data Transmission Service (DTS) migration scenarios is NOT true?

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

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

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

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

NO.45 Which of the following statements about Alibaba Cloud ApsaraDB for MongoDB is true?

It takes a longer time to perform operations and maintenance (O&M) on ApsaraDB for MongoDB instances than on self-installed and self-managed MongoDB.

DataWorks is not supported for MongoDB data processing.

Alibaba Cloud and MongoDB have a strategic partnership, so Alibaba Cloud Is able to provide the latest MongoDB features in our ApsaraDB for MongoDB product, in all our global regions.

NO.46 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.

NO.47 Alibaba Cloud DTS (Data Transmission Service) can only migrate between databases that are hosted on RDS.

True

False

NO.48 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?

ECS-based Databases

Express Connect DB

RDS Instance

ApsaraDB MongoDB

NO.49 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

NO.50 Which database utility is good for database management and DevOps?

DMS

DBS

DTS

DAS

ADAM

NO.51 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

NO.52 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?

Use DTS (Data Transmission Service)

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

This type of migration isn’t possible

Migrate the entire VM hosting the database

NO.53 Which of the following are features supported by Alibaba Cloud RDS for MySQL? (The number of

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

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

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/doc-detail/48980.html?spm=a2c5t.11065259.1996646101.searchclick

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

ACD

NO.54 Which of the following are relational databases? (Number of correct answers: 5)

Oracle

MySQL

PostgreSQL

MongoDB

MariaDB

Redis

TSDB

HBase

SQL Server

NO.55 Which of the following deployment architectures are supported by Alibaba Cloud ApsaraDB for MongoDB?
(Number of correct answers: 3)

Standalone instance

Primary/secondary instance that consists of two nodes

Replica set instance that consists of three nodes

Sharded cluster instance

Replica set instance that consists of six nodes

NO.56 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.

True

False

NO.57 Which of the following is not a feature or usage scenario of Data Lake Analytics (DLA)?

Interactive analysis

Batch processing

Online transaction processing

Stream or micro-batch processing

NO.58 Which of the following is the most efficient backup in ApsaraDB for MongoDB?

Logical backup

Physical backup

Snapshot backup

Full backup

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