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Alibaba Cloud ACA-Developer - ACA Developer Certification

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Total 95 questions

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

A.

DMS (Data Management Service)

B.

aliyun-cll

C.

Redis-cIl

D.

Sentinel

Alibaba Cloud RabbitMQ 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 Rabbit MQ? (Number of correct answers: 3)

A.

Scheduled message

B.

Ordered message

C.

Batched message

D.

Transactional message

E.

Retried message

Which of these are suitable use cases for Alibaba Cloud's MongoDB service? (Number of correct answers: 3)

A.

Applications requiring high OPS, such as logging apps

B.

Scenarios where complex transaction support is required

C.

Applications where JSON is a good choice of storage format

D.

Applications requiring geo-location queries, such as logistics or order status apps

Which of the following descriptions of the principles of Alibaba Cloud SSL certificate private key protection is correct?

A.

Alibaba Cloud uses the built-in functionality of the SSL certificate service to encrypt and store the private key to certificates private key

B.

The plaintext of Alibaba Cloud's private key is usually stored on disk and backed up regularly

C.

Alibaba Cloud Certificate Service uses symmetric encryption to save the certificate private key

D.

Alibaba Cloud Certificate Service keys are loaded Into memory in plaintext format ONLY when needed

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

A.

XML

B.

JSON

C.

SIMPLIFIED

D.

VERBOSE

When versioning is enabled for an OSS Bucket, previous versions of objects will be retained, using storage space and incurring additional costs. How can you save space and reduce costs, while retaining some of the benefits of object versioning?

A.

Avoid using version management.

B.

Use the Function Compute Service to regularly check for and delete old versions of objects.

C Use OSS s built in lifecycle management capabilities to automatically delete old versions of objects after a set time.

C.

Use OSS's built in lifecycle management capabilities to move old versions of objects to Archival Storage.

A company has some new content that needs to be promoted (such as new features, new activities, new games, or new articles). In order to achieve the overall promotion goal, the operating staff will select various channels for promotion (including standard HTML/HTML5 (desktop), iOS, and Android). You are using Alibaba Cloud's Log Service: in order to ascertain the effectiveness of content promotion accurately and in real time, which log collection method should you use, as a developer?

A.

Syslog

B.

Web Tracking

C.

Kafka

D.

Logslash

What are the required parameters for the Python SDK to create a client to access Alibaba Cloud's API? (Number of correct answers: 3)

A.

access.keyjd

B.

access.key.secret

C.

regionjd

D.

zone jd

E.

vpcjd

Which of the following descriptions describes the (Security Token Service) STS service correctly? (Number of correct answers: 3)

A.

Through the STS service, RAM users or RAM roles can obtain a temporary token that allows them to call the Alibaba Cloud API or use the web console

B.

A STS request consists of an access address, communication protocol, request method, request parameters and character encoding

C.

When calling the STS API, in order to ensure the safe calling of the API, Alibaba Cloud will authenticate each API request through a signature when each API call is made

D.

The STS service supports the use of both HTTP and HTTPS protocols

An Elastic Compute Service (ECS) instance (private IP only) needs to read data from a RDS MySQL database in another VPC through a private IP address, and at the same time, RDS's public internet endpoint needs to be available for requests from some internet clients. Which steps must be taken to allow applications to access this RDS instance via both interfaces? (Number of correct answers: 2)

A.

Make sure that the security group of the ECS instance allows outbound access to the MySQL service port.

B.

Add the private and public IP addresses of all applications to the RDS whitelist.

C.

Connect the two VPCs through CEN.

D.

Configure a NAT gateway for the VPC to which the ECS instance belongs.