Jun-2022 Free Alibaba Cloud ACA-Developer Exam Question Practice Exams [Q23-Q37]

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Jun-2022 Free Alibaba Cloud ACA-Developer Exam Question Practice Exams

Ace ACA-Developer Certification with 97 Actual Questions

Alibaba Cloud ACA-Developer Exam Syllabus Topics:

Topic	Details
Topic 1	Create and implement secret key based access signatures Implement solutions to interact with Alibaba Cloud Message Service
Topic 2	Implement autoscaling rules, including scheduled autoscaling, and scaling by operational or system metrics Use Tracing Analysis to debug and analyze application issues
Topic 3	Know how to select different types of NoSQL database for different application scenarios Setting up CDN and Redis for content acceleration
Topic 4	Use Cloud Monitor to monitor application resource usage and health status Migrate data from a local environment to OSS or RDS
Topic 5	Implement solutions to interact with Alibaba Cloud Message Queues Use Alibaba Cloud CLI and SDK to manage cloud resources
Topic 6	Connect to Alibaba Cloud Object Storage Service (OSS) through both private and public network endpoints Set up applications using Simple Application Server
Topic 7	Interact with data using the appropriate SDK Configure authentication for APIs calls Monitoring, Debugging and Optimization
Topic 8	Setup applications directly with Alibaba Cloud Function Compute, Serverless Workflow and API Setup remote access to ECS
Topic 9	Connect with Alibaba Cloud Relational Database Service (RDS) through both private and public network endpoints Publish container images to Alibaba Cloud Container Registry (ACR)

NEW QUESTION 23
Which of the following descriptions of the principles of Alibaba Cloud SSL certificate private key protection is correct?

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

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

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

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

NEW QUESTION 24
Which of the following statements are correct, with regard to Alibaba Cloud Log Service? (Number of correct answers: 3)

As an agent for collecting logs, Logtail can collect logs from existing system log files in a non-intrusive manner

The Log Service frontend service adopts an LVS + NGINX architecture

The Logstore backend service is deployed on a single machine to complete the real-time persistence, indexing, query and delivery of Logstore data to MaxCompute

Each log written to the Log Service backend will be saved in triplicate (across three separate physical servers)

NEW QUESTION 25
Which of the following data volume types is not supported by Elastic Container Instance (ECI)?

EmptyDir

NFS

ConfigFile

FixedVolume

NEW QUESTION 26
You have a Java application with source code stored on GitHub. Now you want to build a container image using this code, and store it on a Container Registry instance located in Mainland China. Which of the following is the simplest, lowest maintenance option?

Download the Java code from GitHub to your laptop, build the Docker image using a local Dockerfile, and use docker push to upload It to Container Registry.

Upload the Dockerfile to GitHub for version control, then download it together with the Java code to your local device, compile and pack container image, and upload the image to Alibaba Cloud Container Registry via docker push .

Associate your Alibaba Cloud Container Registry instance with your GitHub repository, and upload the Java code and Dockerfile to GitHub Set u Jenkins environment to automate the process of building the container image and pushing it to your Container Registry instance.

Associate your Alibaba Cloud Container Registry instance with your GitHub repository, and upload the Java code and Dockerfile to GitHub Th Container Registry’s built-in build service, configuring a rule that will rebuild your container image whenever your GitHub code is updated

NEW QUESTION 27
Which of these are suitable use cases for Alibaba Cloud’s ApsaraDB for Redis service? (Number of correct answers: 3)

Online gaming user rankings (scoreboard)

E-Commerce sales & promotions

Live video chat system

Enterprise OA system

NEW QUESTION 28
Which of the following statements about migrating data into and out of Object Storage Service (OSS) are correct? (Number of correct answers: 3)

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.

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.

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

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

NEW QUESTION 29
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)

Due 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.

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

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

It 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.

NEW QUESTION 30
Which of the following options is not included in Object Storage Service (OSS) object URLs?

Region name

Zone name

Bucket name

Filename

NEW QUESTION 31
A developer creates a MySQL database service on a Linux ECS instance (ECS-A), and wants to access this database service from another instance (ECS-B) in the same VPC using the private IP address bound to the ECS instance, however, the connection can’t be established. What could cause this? (Number of correct answers: 2)

The security group for ECS-A does not have the default MySQL service port open.

The built-in firewall on ECS-A has rules that prohibit external access to the MySQL service port.

No Internet IP address is configured for ECS-A.

The bind-address parameter set in the my.ini configuration file of the MySQL service is commented out.

NEW QUESTION 32
Which of the following descriptions of Alibaba Cloud’s SSL certificate service are correct? (Number of correct answers: 2)

Alibaba Cloud SSL Certificate Service supports the purchase of three types of certificates: DV certificates, OV certificates, and EV certificates.

EV certificates are suitable for large enterprises, financial institutions, etc.

OV certificates are suitable for personal websites.

DV level certificates are suitable for government organizations, enterprises, educational institutions, etc.

NEW QUESTION 33
What are the benefits of creating indexes on PolarDB? (Number of correct answers: 2)

Improve the query efficiency SELECT statements.

Improve the efficiency of DML operations such as UPDATE.

Improve the efficiency of DDL operations.

Reduce invalid data scanning.

NEW QUESTION 34
Which of the following OSS tools are GUI-based? (Number of correct answers:2)

Web Console

ossf s

ossbrowser

ossutil

NEW QUESTION 35
On which operating systems can you install Alibaba Cloud command line tools? (Number of correct answers:
3)

Windows

Linux

macOS

Android

Explanation
https://www.alibabacloud.com/blog/how-to-manage-your-alibaba-cloud-linux-server-from-the-command-line-in

NEW QUESTION 36
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?

NEW QUESTION 37
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)

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

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

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

Functions processes independent data objects.

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