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Viewing questions 11-20 out of questions

Questions # 11:

Alibaba Cloud Link Tracing Analysis supports call link reporting based on the Open Tracing standard. Which of the following client types does link tracing support? (Number of correct answers:3)

Options:

Jaeger

Zipkln

Skywalklng

Pinpoint

Answer

Explanation

https://www.alibabacloud.com/blog/opentracing-implementation-of-jaeger_594957

Questions # 12:

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?

Options:

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

Answer

Questions # 13:

A developer recently discovered that their company's application is beginning to suffer performance degradation as a result of increased user demand for the application. After some analysis, the major bottleneck is discovered to be the RDS database instance which hosts the company's databases, "A" and "B". The developer plans to use the DTS data migration solution to move one of the databases to a new RDS instance. Which of the following statements is correct? (Number of correct answers: 3)

Options:

The code for the application will have to be rewritten once this migration is complete.

The database account used for data migration must have read and write permissions. To ensure database security, please delete the database account used for data migration or reclaim related write permissions after data migration is completed.

After disconnecting the connection between the source instance database B and the application, you need to log in to the source database B to check the session messages to ensure that no new sessions performed write operations.

Create a reverse data migration task and start it to migrate subsequent incremental data from target Instance database B to source instance database B.

Answer

A, B, C

Questions # 14:

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:

vpcld

vSwitchlds

securityGroupId

ENIID

Answer

A, B, C

Explanation

Specifies whether to allow functions to access VPC resources.

On: Functions can access VPC resources.

If you turn on the switch, you must set the following parameters:

VPC: Select a VPC.

Vswitches: Select one or more vSwitches.

Security Group: Select the security group with which your ENI is associated.

Off: Functions cannot access VPC resources.

https://www.alibabacloud.com/help/doc-detail/72959.htm

Questions # 15:

Which of the following configurations cannot improve the stability, reliability or availability of an Alibaba Cloud Scaling Group? (Number of correct answers: 3)

Options:

Select multiple VPCs when creating the scaling group

When creating the scaling group, select multiple Vswitches in multiple Zone within a Region

Choose a variety of different ECS types when creating your Scaling Configuration

In the process of creating a Scaling Group, associate multiple Server Load Balancers

Answer

A, C, D

Questions # 16:

A developer is making the ModifyDDInstanceSpec API call to change the specifications of an RDS instance, but the operation fails. Why could this be? (Number of correct answers: 3)

Options:

The instance is in the running state

No instance type (specification) was included in the request parameters

The instance has a backup task being executed

The targeted RDS instance is a disaster recovery instance

Answer

A, B, C

Questions # 17:

you have a Node.js based application and you plan to migrate it to Alibaba Cloud Function Compute, which of the following steps is unnecessary?

Options:

Manually install the Node. Js package in the Function Compute console

Create a single web application and upload the corresponding code package via the Function Compute console (or fcli)

Configure program startup commands and access ports in the Function Compute console

Start and verify the application in the Function Compute console

Answer

Questions # 18:

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)

Options:

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.

Answer

C, D

Questions # 19:

As more businesses move online and collect more data about their users, databases are beginning to grow very large, affecting table query performance and business operations. In order to solve these problems, in addition to sub-database sub-table transformation, we can also use Data Management Service (DMS)'s archiving function to regularly archive large table data. We can then remove the archived records from the original table to improve query performance. Which of these statements about this feature of DMS is NOT correct?

Options:

The supported database types are RDS MySQL and PolarDB MySQL

Before you can use this feature of DMS, you must first enable Alibaba Cloud's Database Backup Service (DBS)

Backup data can be stored In OSS

The user role of this operation must be 'administrator" or "DBA"

Answer

Questions # 20:

Which of the following web applications are suitable for deployment on Simple Application Server (SAS), as compared with LCS? (Number of correct answers: 3)