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Alibaba Cloud ACA-Operator ACA System Operator Certification Exam Practice Test

ACA System Operator Certification Questions and Answers

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Question 1

Which of the following methods can NOT be used for operating Alibaba Cloud

Elastic Compute Service (ECS) instances?

Options:

A.

CLI

B.

SDK

C.

Console

D.

CloudFormation

Question 2

In order to deal with sudden spikes in traffic, Company A uses Alibaba Cloud

Auto Scaling to set up an alarm trigger task (growing the Scaling Group when

the average memory utilization on ECS instances exceeds 80%). During the

test, it was found that the alarm task was not executed successfully. Which of

these could be possible causes? (Number of correct answers: 3)

Options:

A.

The ECS instances in the Scaling Group have not yet installed the CloudMonitor monitoring agent

B.

Before triggering the alarm task, the number of instances in the group has reached the maximum number of instances allowed (MaxSize)

C.

The instance types chosen in the Scaling Configuration are out-of-stock in the Alibaba Cloud Region where the Scaling Group is located

D.

The number of instances in the current group exceeds the “expected number of instances” for the Scaling Group

Question 3

Which database utility is suitable for database migration?

Options:

A.

DMS

B.

DBS

C.

DTS

D.

DAS

Question 4

Which of the following options correctly describes CloudMonitor Custom Monitoring and Custom Events? (Number of correct answers: 2)

Options:

A.

Custom Events is used for collection of continuous event type data, queries, and alarms

B.

Custom Events is for periodic and continuous collection of time series monitoring data, queries, and alarms

C.

Custom Monitoring is used for periodic and continuous collection of time series monitoring data, queries, and alarms

D.

Custom Monitoring is used for collection of non-continuous event data, such as information about ECS instance restarts

Question 5

A Developer is creating a Function Compute function. This function requires around 1 GB of temporary storage for files while executing. These files will not be needed after the function is completed for a fixed period. How can this developer MOST efficiently handle the temporary files?

Options:

A.

Store the files in Cloud Disk and delete the files when Function Compute function call completes.

B.

Copy the files to NFS and delete the files when the Function Compute function call completes.

C.

Store the files in the /tmp directory on a temporary ECS instance, and delete the files at when the Function Compute function call completes.

D.

Copy the files to an OSS bucket with a lifecycle policy configured to delete the files automatically.

Question 6

Alibaba Cloud ActionTrail is a service that monitors and records the actions of your Alibaba Cloud account, including the access to and use of cloud products and services through the Alibaba Cloud console, API operations, and SDKs.

Options:

A.

True

B.

False

Question 7

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

Options:

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

Question 8

You need to log all actions taken by users of your Alibaba Cloud account,

whether via the command line tools or the web console. Which Alibaba Cloud

product can you use to create a log of user operations?

Options:

A.

CloudMonitor

B.

ActionTrail

C.

Cloud Configo

D.

Resource Group

Question 9

Which of these Alibaba Cloud services are used for security (either credentials management, logging, or auditing?) (Number of correct answers: 3)

Options:

A.

ActionTrail

B.

Log Service

C.

Key Management Service (KMS)

D.

Table store