Alibaba ACA-Operator Exam Practice Test Instant Access

Question 1

Alibaba Cloud RocketMQ is typically used in scenarios where message publishing and consumption performance requirements are high. Which of the following are supported message types in Alibaba Cloud RocketMQ? (Number of correct answers: 3)

AScheduled message

BOrdered message

CBatched message

DTransactional message

ERetried message

Answer : A, B, D

Question 2

You can create an event notification rule in Message Service and push notifications to the specified consumer in the form of messages, to receive events from specified Alibaba Cloud resources. Which of the following options are correct statements about the Message Service (MS) service? (Number of correct answers: 2)

AEvent Notifications can cross regions.

BMessage Service provides synchronous notification to ensure the consistency between the message acknowledgment and event processing.

CThe event notification message is retained within the valid time. When you fail to receive an event message, the event notification message is retained based on the specified retry policy.

DThe consumer type of the event notification message can be HTTP Server, Queue, or Topic.

Answer : C, D

Question 3

Which of the following database connection methods does ApsaraDB for Redis support? (Number of correct answers: 2)

ADMS (Data Management Service)

BAliyun-cli

CRedis-cli

DSentinel

Answer : A, C

Question 4

A developer is making the ModifyDBInstanceSpec API call to change the specifications of an RDS instance, but the operation fails. Why could this be? (Number of correct answers: 3)

AThe instance is in the 'running' state

BNo instance type (specification) was included in the request parameters

CThe instance has a backup task being executed

DThe targeted RDS instance is a disaster recovery instance

Answer : B, C, D

Question 5

Which of the following options are correct for Multipart Upload and Resumable Upload in Object Storage Service (OSS)? (Number of correct answers: 3)

AUse Multipart Upload to upload multiple parts of a file in parallel to speed up the upload process

BMultipart Upload is usually used when the size of the file to be uploaded is large

CIf the upload fails due to an accident during the uploading of fragments, you need to upload all the fragments again

DAfter an upload is interrupted, the portions of the file which have successfully uploaded prior to the interruption will be saved in the OSS bucket

Answer : A, B, D

Question 6

Which database utility is suitable for automate perception, healing, optimization, O&M, and security assurance for databases?

ADMS

BDBS

CDTS

DDAS

Answer : D

https://www.alibabacloud.com/help/doc-detail/64851.htm

Question 7

Which database utility is suitable for managing databases in a centralized manner?

ADMS

BDBS

CDTS

DDAS

Answer : A

https://www.alibabacloud.com/help/doc-detail/47550.htm

Alibaba ACA-Operator ACA System Operator Certification Exam Practice Test