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ACA-Developer ACA Developer Certification Questions and Answers

Questions 4

You can use Alibaba Cloud Data transmission service (DTS) or the open source tool Redis-shake to migrate and synchronize data from a local Redis instance to an Alibaba Cloud Redis instance. What is one feature which DTS has but Redis-shake does not?

Options:

A.

Full data migration

B.

Incremental data migration

C.

One-way data synchronization

D.

Two-way data synchronization

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Questions 5

Which of the following statements about migrating data into and out of Object Storage Service (OSS) are correct? (Number of correct answers: 3)

Options:

A.

You can migrate data between OSS buckets in any of the following conditions: Buckets are located within the same region, buckets are located across regions and buckets belong to different Alibaba Cloud accounts.

B.

A migration job occupies the network resources of the source and the destination. To ensure business continuity, we recommend that you specify a rate limit for a migration Job or run the migration job during an off-peak period.

C.

You cannot migrate data between OSS buckets if the data at the source is stored in a bucket of the Archive type.

D.

Online migration supports both migrating buckets at a time, and migrating all the data under an Alibaba Cloud account at a single time.

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Questions 6

Log Service uses a semi-structured data model to define a log. This mode contains five data fields:

Topic, Time, Content, Source, and Tags. Log Service has different requirements for the format of each field in the log. Which of the following fields cannot be empty characters? (Number of correct answers: 4)

Options:

A.

Topic

B.

Time

C.

Content

D.

Source

E.

Tags

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Questions 7

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 8

To meet data analytics requirements on large datasets, which of these databases can meet the demand for structured and semi-structured storage for almost all types of data, albeit with limited support for strong transactions?

Options:

A.

HBase

B.

OceanBase

C.

RDSMariaDB

D.

TSDB

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Questions 9

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 10

Which of the following cloud services can be integrated with Alibaba Cloud KMS (Key Managed Service)? (Number of correct answers: 3)

Options:

A.

Elastic Compute Service (ECS)

B.

Object Storage Service (OSS)

C.

Relational Database Service (RDS)

D.

Server Load Balancer (SLB)

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Questions 11

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 12

By default, Function Compute creates an instance for each request Function compute allows you to create multiple instances concurrently to reduce costs and improve execution efficiency Which of the following scenarios is NOT suitable for enabling the feature of handling multiple requests on a single instance? (Number of correct answers: 2)

Options:

A.

The function has a shared state and cannot be accessed concurrently.

B.

Requests are waiting for responses from the downstream service for an extended period of time.

C.

A request consumes a large amount of CPU and memory resources.

D.

Functions processes independent data objects.

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Questions 13

A developer is writing logs through the Log Service API, and can see via the Logstore monitorin metrics that write traffic is about 10 MB/s, but a 403 error is reported during the writing process. Which of these is a possible cause?

Options:

A.

There is significant network delay

B.

The write throughput of a single partition is limited, and the 10 MB/s write traffic exceeds

C.

There is not enough space in the Logstore partition

D.

The target partition in the Logstore is not specified

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Questions 14

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