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ACA-Developer ACA Developer Certification Questions and Answers

Questions 4

Alibaba Cloud Content Delivery Network (CDN) is a suitable product for the following scenarios: (Number of correct answers: 2)

Options:

A.

BBS forums with less than 100 daily page views.

B.

Static sites with more than 100,000 daily page views.

C.

Images, HTML, CSS and JS files on a medium-sized E-commerce website.

D.

News websites with more than 30 million daily page views and users are all from Singapore.

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Questions 5

When using the Alibaba Cloud CLI, what is the default data format for responses, when executing queries such as "aliyun ecs Describelnstances"?

Options:

A.

JSON

B.

YAML

C.

XML

D.

TABLE

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Questions 6

Which data format is NOT supported by Alibaba Cloud Message Service?

Options:

A.

XML

B.

JSON

C.

SIMPLIFIED

D.

VERBOSE

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Questions 7

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

Options:

A.

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

B.

For 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.

C.

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

D.

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

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Questions 8

A developer received a response code of 409 when trying to use a KMS key via the API. Given that a 409 response was returned, which of these states could the KMS key be in? (Number of correct answers: 3)

Options:

A.

PendingDeletion

B.

Pendinglmport

C.

Disabled

D.

PendingCreate

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Questions 9

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?

Options:

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

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Questions 10

A developer have written a web application using a microservice architecture, in such a 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?

Options:

A.

3

B.

4

C.

5

D.

6

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Questions 11

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

Options:

A.

The instance is in the running state

B.

No instance type (specification) was included in the request parameters

C.

The instance has a backup task being executed

D.

The targeted RDS instance is a disaster recovery instance

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Questions 12

During the process of backing up an RDS database, a developer found that the backup failed. What might cause this to happen?

Options:

A.

The database instance is not stopped

B.

DDL operations were performed during the backup

C.

DML operations were performed during the backup

D.

DCL operations were performed during the backup

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Questions 13

Which of the following data volume types is not supported by Elastic Container Instance (ECI)?

Options:

A.

EmptyDir

B.

NFS

C.

ConfigFile

D.

FixedVolume

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Questions 14

A mobile application developer intends to use Alibaba Cloud Object Storage Service (OSS) to store the end user data for their app, and to ensure data isolation between each user of the app, to prevent one user from obtaining another's data. Which method can be done to meet these requirements?

Options:

A.

RAM Policy

B.

STS authorization

C.

Bucket Policy

D.

Object Policy

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Exam Code: ACA-Developer
Exam Name: ACA Developer Certification
Last Update: Nov 21, 2024
Questions: 95

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