Alibaba ACA-Developer Exam Practice Test Instant Access

Question 1

A job hunting website stores user's resumes in Object Storage Service (OSS) The current resume upload process is as follows:

7. Users upload resumes

2. The server responds to the upload request

3. The resume is uploaded to the server

4. 1 he server uploads the resume to OSS

Which of the following methods can be used to upload objects to OSS without requiring Step 3?

ASimple Upload

BForm Upload

CMultipart Upload

DAppend Upload

Answer : D

Question 2

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

AXML

BJSON

CSIMPLIFIED

DVERBOSE

Answer : D

Question 3

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?

AAvoid using version management.

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

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

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

Answer : C

Question 4

Which of the following is NOT a valid state for a scaling activity in Alibaba Cloud's Elastic Scaling Service ESS -also known as Auto Scaling) state of the scaling activity in the Alibaba Cloud elastic

scaling group?

ARejected

BExecuting

CFailed

DTimeout

Answer : C

Question 5

The event monitoring feature in CIoudMonitor provides custom event monitoring functions. Which of the following data reporting methods are included? (Number of correct answers: 3)

AReport event monitoring through the Python SDK

BReport event monitoring through the Java SDK

CReport event monitoring data via HTTP

DReport event monitoring data through the command line (CU)

Answer : A, B, C

Question 6

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

AThrough 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

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

CWhen 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

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

Answer : B, C, D

Question 7

When connecting to the Alibaba Cloud RDS database, in order to improve the completeness and integrity of the connection, you can enable SSL encryption and install an SSL CA certificate for the required application service. Which of the following statements are correct? (Number of correct answers: 3)

ADue to the way in which SSL encryption is implemented, enabling SSL encryption will significantly increase the CPU usage rate. Enable SSL encryption when there is an encryption requirement for the external network link. The intranet link is relatively safe, and generally no link encryption is required.

BIf the RDS instance is a multi-node instance, the system will trigger the active/standby switch after the SSL service is disabled.

CWhen using read/write splitting, you can also enable SSL encryption to improve the security of the connection.

DIt is discovered that an Alibaba Cloud RDS SSL certificate is about to expire, and the validity period needs to be updated, requiring that the certificate be updated, then reinstalled. This will restart the RDS instance.