Free Practice Alibaba ACA-Operator Exam Questions 2025

Stay ahead with 100% Free ACA System Operator ACA-Operator Dumps Practice Questions

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Total 63 Questions | Updated On: Apr 23, 2025

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Question 1

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

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 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 4

Which Alibaba Cloud service is used to manage cloud computing resources including the deployment?

A : Operation Orchestration Service (OOS)

B : Maintenance Orchestration Service (MOS)

C : Resource Orchestration Service (ROS)

D : Resource Access Management (RAM)

Answer: C

Question 5

Which database utility is suitable for database migration?

A : DMS

B : DBS

C : DTS

D : DAS

Answer: C

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Total 63 Questions | Updated On: Apr 23, 2025

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