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ACA-Developer ACA Developer Certification Questions and Answers

Questions 4

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 5

By default Function Compute cannot access resources within a VPC network group. To enable Function Compute to access resources located in a VPC, which of the following parameters needs to be configured? (Number of correct answers: 3)

Options:

A.

vpcld

B.

vSwitchlds

C.

securityGroupId

D.

ENIID

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Questions 6

What are the advantages of using Elastic Container Instance (ECI) to deploy applications compared with using ECS? (Number of correct answers; 2)

Options:

A.

Low maintenance, low costs

B.

Startup in seconds without the need to reserve resources

C.

Less significant visualization layer performance losses

D.

Stronger isolation between instances

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Questions 7

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 8

Which of the following options is not included in Object Storage Service (OSS) object URLs?

Options:

A.

Region name

B.

Zone name

C.

Bucket name

D.

Filename

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Questions 9

Serverless Workflow allows 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?

Options:

A.

Request response mode

B.

Synchronization mode

C.

Asynchronous mode

D.

Waiting for callback mode

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Questions 10

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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Questions 11

Assume that a company uses ApsaraDB for PolarDB. The company commonly queries users based on their basic information, including: addresses, company names, and ID numbers. In this scenario, what is the best practice for creating a database index (or indexes)?

Options:

A.

Create a b-tree index on each column to be searched.

B.

Create a hash index on each column to be searched.

C.

Create a gin index for multiple fields.

D.

Create a gist index for multiple fields.

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Questions 12

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

Options:

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

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Questions 13

What migration features does Alibaba Cloud SMC (Server Migration Center) support? (Number of correct answers: 3)

Options:

A.

Supports incremental data migration

B.

Supports batch migration

C.

Supports migration from virtual machines to physical machines

D.

Supports migration to Container Registry

E.

Supports all versions Microsoft Windows

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Questions 14

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

Options:

A.

Custom Events are 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.

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Exam Code: ACA-Developer
Exam Name: ACA Developer Certification
Last Update: Apr 25, 2024
Questions: 95

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