Alibaba ACA-Cloud1 Practice Questions| TestInsights

Question 1

Cloud disks are reliable because they use to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.

Aa distributed file management system with 3 redundant copies

Ba file system

Ca double copy distributed system

Da Linux file system

Correct : A

An ECS disk can be used jointly or separately to meet the requirements of different application scenarios. ECS disks are categorized into ephemeral SSD disks and cloud disks. Compared with ephemeral SSD disks, cloud disks are more reliable as they use a triplicate distributed system to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.

http://docs-aliyun.cn-hangzhou.oss.aliyun-inc.com/pdf/ecs-product-introduction-intl-en-2017-03- 24.pdf

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Aa distributed file management system with 3 redundant copies

Ba file system

Ca double copy distributed system

Da Linux file system

Question 2

Company builds a music download website based on OSS and ECS, and users can download mp3 files

after registering for the website. Recently, the public network traffic to the OSS has doubled but the increase of registered users is less than 10%. After in-depth analysis, engineers find that many user download requests are raised from search engine but not the website itself. In this case, which of the following measures is thought to be able to address this issue.

AMigrates music files from the OSS to the data disks for ECS instances.

BChanges the website access mode to HTTPS.

CLimits access sources by configuring ''Anti-leech settings'' of OSS bucket attributes.

DIntroduce SLB for extra protection.

Correct : C

http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNOSS11828897_en- US_intl_190202150837_public_b55986256a50380c526a35e863023ec9.pdf (55)

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AMigrates music files from the OSS to the data disks for ECS instances.

BChanges the website access mode to HTTPS.

CLimits access sources by configuring ''Anti-leech settings'' of OSS bucket attributes.

DIntroduce SLB for extra protection.

Question 3

Which of the following statements is true for RDS?

AMultiple databases can be created in one RDS instance.

BDatabases with the same name are allowed in the same instance.

CResources are not shared among the databases in the same RDS instance.

DNone of the above is true.

Correct : A

https://www.alibabacloud.com/help/doc-detail/26092.htm

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AMultiple databases can be created in one RDS instance.

BDatabases with the same name are allowed in the same instance.

CResources are not shared among the databases in the same RDS instance.

DNone of the above is true.

Question 4

Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. It supports adding existing ECS instances into the scaling group, whose status however must be .

ARunning

BCreated

CStopped

DPreparing

Correct : A

http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNESS1876951_en- US_intl_181115175025_public_176152014821b385708e5290da11a0fe.pdf (14)

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ARunning

BCreated

CStopped

DPreparing

Question 5

Your friend purchases some Alibaba Cloud resources and uses them to build an online training website. Before the site goes online, your friend wants to perform some performance tests but doesn't know how to do it. In this case, which of the following services can help?

AAfter-Sales Support Service

BSupport Ticket Service

CLoad and Performance Testing Service

DNone Of The Above

Correct : A

https://www.alibabacloud.com/support/after-sales

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AAfter-Sales Support Service

BSupport Ticket Service

CLoad and Performance Testing Service

DNone Of The Above

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