ACA-Operator Practice Online

Question 1

Which of these metrics are collected by CloudMonitor’s Host Monitoring function? (Number of correct answers: 3)

A : CPU status of the ECS instance

B : Running processes on the ECS instance

C : Storage space used by OSS buckets

D : ECS network I/O

Answer: A,B,D

Question 2

Which of the following services is used to establish private network connections between virtual private

clouds (VPCs) in different regions, or between VPCs and data centers?

A : CEN (Cloud Enterprise Network)

B : Express Connect

C : VPN Gateway

D : NAT Gateway

Answer: A

Question 3

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

A : Quickly build a personal blog website

B : Quickly build a small e-commerce website

C : Quickly build serverless site using Function Compute

D : Set up a NoSQL database service

E : Quickly build a personal, learning, or test environment

Answer: A,B

Question 4

Which database utility is suitable for database migration?

A : DMS

B : DBS

C : DTS

D : DAS

Answer: C

Question 5

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)

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

B : Applies indices to fields to contain many records.

C : A table should not contaiiAiore than 6 indexed fields.

D :

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

E : Adhere to the rightmost prefix principle when using composite indexes

Answer: A,C,D

Name:	ACA System Operator
Exam Code:	ACA-Operator
Certification:	Alibaba Cloud Certified Associate
Vendor:	Alibaba
Total Questions:	63
Last Updated:	May 08, 2024

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