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Guide for ACA System Operator Certification

Quiz ACA System Operator Certification

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/ 10

Quiz

1/10
A company is developing a music application based on OSS and ECS, their users can download mp3
files after signing up for the application. Recently, the public network traffic to the OSS has doubled
but the increase of registered users is less than 10%. After in-depth analysis, system operators find
that many download requests are requested from the external search engine. In this case, which of
the following measures is thought to be able to address this issue?
Select the answer
1 correct answer
A.
Migrate music files from the OSS to the data disks for ECS instances
B.
Change the website access mode to HTTPS
C.
Enable “Hotlink protection” of OSS and use an HTTP Referer whitelist to prevent unauthorized
users from accessing your data
D.
Use SLB for extra protection

Quiz

2/10
Which of the following is NOT required for SMC (Server Migration Center) to
migrate a server to Alibaba Cloud?
Select the answer
1 correct answer
A.
Import the migration source information to the SMC console
B.
From the SMC console, configure the type of disk image to be generated during the migration
C.
The SMC client transfers the source data to an intermediate ECS instance
D.
The SMC backend service generates a target Alibaba Cloud image based on the migration source

Quiz

3/10
In Alibaba Cloud, a developer finds that the ECS instance he created does not
have public IP assigned. The API method used was “CreateInstance”. Which
of the following is the most likely reason?
Select the answer
1 correct answer
A.
The developer did not call AllocatePublicIpAdress (an additional API call), which is needed to
assign a public IP
B.
The CreateSecurityGroup API call was not made
C.
The CreateDisk API call was not made
D.
The ECS was not restarted after being created

Quiz

4/10
Which of the following data volume types is not supported by Elastic Container Instance (ECI)?
Select the answer
1 correct answer
A.
EmptyDir
B.
NFS
C.
ConfigFile
D.
FixedVolume

Quiz

5/10
If you have a Node.js based application and you plan to migrate it to Alibaba Cloud Function
Compute, which of the following steps is unnecessary?
Select the answer
1 correct answer
A.
Manually install the Node.js in the Function Compute console
B.
Create a single web application and upload the corresponding code package via the Function
Compute console (or fcli)
C.
Configure program startup commands and access ports in the Function Compute console
D.
Start and verify the application in the Function Compute console

Quiz

6/10
Serverless Workflow allow you to orchestrate distributed tasks in sequence, branch, and parallel
modes, and ensure that tasks are reliably coordinated according to your workflow logic. Which of the
following service integration modes is not supported by Serverless Workflow?
Select the answer
1 correct answer
A.
Request response mode
B.
Synchronization mode
C.
Asynchronous mode
D.
Waiting for callback mode

Quiz

7/10
Which of the following steps is NOT mandatory when creating an API through Alibaba Cloud API
Gateway?
Select the answer
1 correct answer
A.
Define basic API information
B.
Attach a domain name
C.
Define API Request parameters
D.
Define the API backend service

Quiz

8/10
A developer accesses logs in a Log Service Logstore via the API. The error code returned by the server
is 404. Which of these could be the cause?
Select the answer
1 correct answer
A.
The log project (Project) does not exist
B.
The requested digital signature does not match
C.
Server internal error
D.
Server is busy: please try later

Quiz

9/10
A developer has written a web application using a microservice architecture,
in such an architecture, the client (web browser or mobile application) first initiates a request. The
request first reaches the load balancer, then goes through an authentication service, a billing service,
then requests a resource, and finally a result is returned. How many spans does such a call chain
consist of?
Select the answer
1 correct answer
A.
3
B.
4
C.
5
D.
6

Quiz

10/10
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?
Select the answer
1 correct answer
A.
CloudMonitor
B.
ActionTrail
C.
Cloud Configo
D.
Resource Group
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  • Quiz name:ACA System Operator Certification
  • Total number of questions:61
  • Number of questions for the test:50
  • Pass score:80%

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