[May 09, 2022] ACA-Database Ultimate Study Guide - PrepAwayPDF [Q33-Q51]

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[May 09, 2022] ACA-Database Ultimate Study Guide – PrepAwayPDF

Ultimate Guide to Prepare ACA-Database Certification Exam for Alibaba Database in 2022

NEW QUESTION 33
Which of the followings is NOT a correct way to connect to PolarDB?

Use the command line like ‘mysql’ to connect to a cluster

Use DMS to connect to a cluster

Use a client like HeidiSQL to connect to a cluster

Use PolarDB console to log into a cluster

Explanation
Use the PolarDB console to log on to Database.
https://www.alibabacloud.com/help/doc-detail/68511.htm?spm=a2c63.p38356.879954.7.7c2855b1aLLHjb#task-

NEW QUESTION 34
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

NEW QUESTION 35
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

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

NEW QUESTION 36
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 37
You can purchase more read-only nodes after you have created a cluster. If the primary node fails, the system automatically promotes the read-only node with the highest failover priority to become the new primary node while restoring the faulty node.

True

False

Explanation
Each node in a PolarDB cluster has a failover priority. The system performs the following steps to automatically elect a primary node:
Find all the read-only nodes that can be elected as the primary node.
Select one or more read-only nodes that have the highest failover priority.
If the failover to the first node fails due to reasons, such as network issues and abnormal replication status, the system tries to switch to another node until the failover succeeds.
https://www.alibabacloud.com/help/doc-detail/141229.htm?spm=a2c63.p38356.b99.113.36df231dK2DVX0

NEW QUESTION 38
PolarDB for MySQL archive databases use log-structured merge-trees (LSM trees) and the Zstandard (ZSTD) data compression algorithm to increase the data compression ratio. How much storage can be saved, at most?

40%

50%

60%

70%

NEW QUESTION 39
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 40
Which of the following is not a component of the PolarDB-0 architecture in Apsara Stack?

FC Switch

SAN

Proxy

RDMA

NEW QUESTION 41
You need to migrate a database that has a storage capacity of 50 GB to the cloud and can tolerate a service downtime of half an hour. In this case, which of the following migration methods is the optimal choice to migrate data to the cloud in terms of stability and availability?

Full backup and incremental backup

Full backup only

Logical migration tools

Incremental backup only

NEW QUESTION 42
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 43
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)

Data lineage

Data quality

Data visualization

Data directory

Data service

NEW QUESTION 44
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

NEW QUESTION 45
Your DTS (Data Transmission Service) migration has failed halfway through: what options do you have? (Number of correct answers: 2)

Delete your DTS instance and start over

Restart the migration task from the console

Your database can’t be migrated: you need to abandon the migration

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

NEW QUESTION 46
Which of the following architectures is not supported by ApsaraDB RDS for MySQL?

The single-node Basic Edition architecture, which can be used in test and non-core production environments

The high-avail ability architecture, in which primary and read-only nodes are deployed to implement automatic failovers

The three-node Enterprise Edition architecture, which ensures zero data loss

The serverless architecture, in which computing resources are charged based on the Pay-As-You-Go (PAYG) billing method

NEW QUESTION 47
Which database utility is good for database management and DevOps?

DMS

DBS

DTS

DAS

ADAM

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 48
Alibaba Cloud DTS (Data Transmission Service) is a file migration tool.

True

False

Explanation
DTS is a data migration, integration, synchronization and change tracking tool.
https://www.alibabacloud.com/help/doc-detail/176063.htm?spm=a2c63.l28256.b99.6.490d7142CiFvPb

NEW QUESTION 49
Which of the following are the core technologies behind Database Backup Service? (Number of correct answers: 3)

Multi-cloud and multi-backend backup

Real-time synchronization

High mount speeds (a few seconds)

Online query and analysis

NEW QUESTION 50
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

NEW QUESTION 51
If you have a development team with several developers working on cloud databases, which product is recommended to use for development collaboration?

DMS

DBS

DTS

DAS

Explanation
A series of step-based solutions for R&D processes, data security, and data development are provided in the Data Management (DMS) console to get you started with DMS.
https://www.alibabacloud.com/help/doc-detail/190124.htm?spm=a2c63.p38356.b99.40.6ad93d19Xe9h14

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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 PolarDB, which is Alibaba Cloud Native database representative Mainstream tools include: ADAM, DTS, DMS, DBS
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	DLA infrastructure, core functions and application scenarios Cloud database edition and engine selection how-to

Alibaba Database Fundamentals-ACA-Database Exam-Practice-Dumps: https://www.prepawaypdf.com/Alibaba-Cloud/ACA-Database-practice-exam-dumps.html

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[May 09, 2022] ACA-Database Ultimate Study Guide – PrepAwayPDF [Q33-Q51]

Alibaba Cloud ACA-Database Exam Syllabus Topics:

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