Alibaba ACA-Operator Exam Questions Instant Access

Question 1

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)

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

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

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

DThe number of instances in the current group exceeds the ''expected number of instances'' for the Scaling Group

Answer : A, B, C

https://www.alibabacloud.com/help/doc-detail/74853.htm

Question 2

Which configuration language does Terraform support?

APython

BXML

CHCL

DYAML

Answer : C

https://www.terraform.io/docs/language/syntax/configuration.html

Question 3

Which of the following features are unique to Alibaba Cloud Container Registry, as compared with Docker Hub? (Number of correct answers: 2)

AContainer Registry can automatically build new Docker images when source code changes.

BFor source code hosted on websites outside China, Container Registry can use servers outside China to build Docker images, even when you are using a Container Registry instance in Mainland China.

CYou can create and delete image repositories in different regions based on your needs.

DYou can set your image repository access to public or private.

Answer : B, C

Question 4

When using Alibaba Cloud CDN, a visitor's request will first be routed to a CDN edge node, and in the event of a cache miss at this edge node, the node will fetch data from the origin site (back-to-source request). Even with this redirection, it is possible for the origin site to see the visitor's real IP address. Which of the following statements about obtaining the visitor's real IP address are correct? (Number of correct answers: 2)

A visitor's real IP address can only be obtained by modifying the site or web application.

Bvisitor's real IP address is stored in the 'X-Forwarded-For' HTTP header. It can be directly obtained via Apache or NGINX logs.

CIn Windows, if IIS is used, after installing the 'F5XForwardedFor' extension module, the visitor's real IP address can be seen via IIS logs.

DYou can activate the 'record visitor's real IP' function in the Alibaba Cloud CDN console, then you can directly view visitor's IP addresses from the Alibaba Cloud CDN access logs.

Answer : B, C

Question 5

Which of the following fields should be defined in the Alibaba Cloud Terraform

Provider Configuration? (Number of correct answers: 3)

Aimage_id

Baccess_key

Cecret_key

Dregion

Answer : B, C, D

https://www.terraform.io/docs/language/providers/requirements.html

Question 6

After you enable health checks of Server Load Balancer (SLB), when one backend ECS instance is declared as unhealthy, which of the following statements is correct?

ARequests are forwarded to other normal ECS instances and the unhealthy ECS instance is shutted down

BRequests are forwarded to other normal ECS instances. When the faulty ECS instance becomes normal, SLB forwards requests to the ECS instance again

CRequests are not forwarded to the ECS instances and you get back a 400 error

DRequests are not forwarded to the ECS instances and you get back a 500 error

Answer : B

https://www.alibabacloud.com/help/doc-detail/27702.htm

Question 7

Which of the following is NOT required for SMC (Server Migration Center) to

migrate a server to Alibaba Cloud?

AImport the migration source information to the SMC console

BFrom the SMC console, configure the type of disk image to be generated during the migration

CThe SMC client transfers the source data to an intermediate ECS instance

DThe SMC backend service generates a target Alibaba Cloud image based on the migration source

Answer : B

https://www.alibabacloud.com/help/doc-detail/127116.htm

Alibaba ACA System Operator Certification ACA-Operator Exam Questions