Free Access AlibabaCloud.ACA-Developer.v2022-02-08.q32 Practice Test (Page 6)

Question 21

A developer runs a web application on a physical machine in an IDC. The machine is running Ubuntu Linux.
Which of the following is the recommended method if he wants to migrate this web application onto an Alibaba Cloud ECS instance?

A.Use a third-party image creation tool to create an image from the physical server. The image is then uploaded to Alibaba Cloud Object Storage Service (OSS) for storage. In the ECS console, import that image from OSS, then, create an ECS instance from the custom image.

B.Use SMC(Server Migration Center) to collect data from the origin physical server. Create an intermediate ECS instance on Alibaba Cloud and wait for the data transfer to complete. Then generate a new image directly from that intermediate ECS instance.

C.Use a third-party image creation tool to create an image from the physical server. Upload the image to the ECS console to turn it into a custom image. Then, use the custom image to create ECS instances.

Question 22

An Elastic Compute Service (ECS) instance (private IP only) needs to read data from a RDS MySQL database in another VPC through a private IP address, and at the same time, RDS's public internet endpoint needs to be available for requests from some internet clients. Which steps must be taken to allow applications to access this RDS instance via both interfaces? (Number of correct answers: 2)

A.Configure a NAT gateway for the VPC to which the ECS instance belongs.

B.Make sure that the security group of the ECS instance allows outbound access to the MySQL service port.

C.Add the private and public IP addresses of all applications to the RDS whitelist.

D.Connect the two VPCs through CEN.

Question 23

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)

A.Time

B.Tags

C.Topic

D.Source

E.Content

Question 24

A developer was sending a request to Key Management Service (KMS) through the KMSAPI interface, and found that the key management service cannot be accessed. What is a possible reason?

A.The HTTPS protocol is not enabled

B.The user key master key is in Pendinglmport state

C.User key master key is in Disabled state

D.The user key master key is in PendingDeletion state

Question 25

Alibaba Cloud Log Service is a Pay-As-You-Go service. The billing unit is 7 day, and the configuration can be adjusted at any time: fees are charged according to actual usage. Which of the following are the main charges for Log Service? (Number of correct answers: 3)

A.Read and write traffic

B.Query analysis

C.Storage capacity

D.Index traffic after index configuration

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