Alibaba ACA-Operator Exam Questions Instant Access

Question 1

How does Cloud Config get permission to gather information about other Alibaba Cloud services?

AAn Access Key

BA RAM Role

CBy storing a copy of your password

DIt gets automatic permission to access everything, because it is an Alibaba Cloud service

Answer : B

https://www.alibabacloud.com/help/doc-detail/156642.htm

Question 2

Which of the following Alibaba Cloud services offers a software-defined wide area network (SD-WAN) solution based on cloud-native technologies?

ANAT Gateway

BSmart Access Gateway (SAG)

CVPN Gateway

DContent Delivery Network (CDN)

Answer : B

https://www.alibabacloud.com/help/doc-detail/69227.htm

Question 3

Which of the following descriptions describes the (Security Token Service) STS service correctly? (Number of correct answers: 3)

AThrough the STS service, RAM users or RAM roles can obtain a temporary token that allows them to call the Alibaba Cloud API or use the web console

BA STS request consists of an access address, communication protocol, request method, request parameters and character encoding

CWhen calling the STS API, in order to ensure the safe calling of the API, Alibaba Cloud will authenticate each API request through a signature when each API call is made

DThe STS service supports the use of both HTTP and HTTPS protocols

Answer : A, B, C

Question 4

When you use SQL statements to access tables in a database without an index configured, a full table scan will be performed. If a table contains a large amount of data, this kind of scan will access a large amount of data and consume a lot of the database's resources. Which of the following options are best practices when creating database indexes? (Number of correct answers: 3)

AAdd an index to a field that is frequently queried but does not frequently perform add, delete, or modify operations.

BApplies indices to fields to contain many records.

CA table should not contaiiAiore than 6 indexed fields.

DApply indexing to fields of fixed length (preferably not long fields).

EAdhere to the rightmost prefix principle when using composite indexes

Answer : A, C, D

Question 5

Which of the following web applications are suitable for deployment on Simple Application Server (SAS), as compared with ECS? (Number of correct answers: 3)

AQuickly build a personal blog website

BQuickly build a small e-commerce website

CQuickly build serverless site using Function Compute

DSet up a NoSQL database service

EQuickly build a personal, learning, or test environment

Answer : A, B, E

https://www.alibabacloud.com/help/doc-detail/58620.htm

Question 6

A company is developing a music application based on OSS and ECS, their users can download mp3 files after signing up for the application. Recently, the public network traffic to the OSS has doubled but the increase of registered users is less than 10%. After in-depth analysis, system operators find that many download requests are requested from the external search engine. In this case, which of the following measures is thought to be able to address this issue?

AMigrate music files from the OSS to the data disks for ECS instances

BChange the website access mode to HTTPS

CEnable ''Hotlink protection'' of OSS and use an HTTP Referer whitelist to prevent unauthorized users from accessing your data

DUse SLB for extra protection

Answer : D

You can configure a HTTP Referer whitelist for a bucket to prevent extra fees

caused by unauthorized access to the bucket.

https://www.alibabacloud.com/help/doc-detail/31901.htm

Question 7

Cloud Config tracks configuration changes of your resources and evaluates configuration compliance.

ATrue

BFalse

Answer : A

https://www.alibabacloud.com/help/doc-detail/127388.htm

Alibaba ACA System Operator Certification ACA-Operator Exam Questions