When using Alibaba Cloud SLB. you can set different weights for backend ECS instances The higher the weight of a backend ECS instance the more load will be assigned to it An SLB instance has 5 ECS instances in the backend server pool, all of which are healthy Among these 5 ECS instances, the weight of ecs_inst1 is set to 100. Which of the following statements is correct?

• A.Based on request level parameters of external requests, all requests with a request level parameter of 100 will be transferred to ecs_inst1
• B.Based on SLB's working mechanism, approximately 20% of loads will be assigned to ecs_inst1
• C.We do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen
• D.100% of loads will be assigned to ecs__inst1, and the remaining 4 ECS instances will stay idle

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You have created two Alibaba Cloud VPCs in two different regions To establish communication between these two VPCs via the Intranet, you can________.

• A.Use CEN to establish communication between VPCs
• B.No operation is needed, as VPCs under the same account are connected through the Intranet by default
• C.Use the VRouter to create a new route table to enable the communication
• D.Create a new access rule through the Security Group to enable the communication

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A popular worldwide forum stores static resources in OSS and accelerates access using CON Users find that the speed of downloading files from the forum has been greatly improved, but uploading files is slow due to the long data transmission distance, resulting in a bad access experience In order to improve the speed of uploading files for users in this forum, so that users in different regions can have a good access experience, we recommend that the forum can________.

• A.Activate the PCDN service
• B.Activate OSS in different regions as file storage, and synchronize data between OSS in different regions through cross-region replication
• C.Enable the transmission acceleration service for O: Enable OSS
• D.Enable OSS static website hosting

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When creating a scaling group in Auto Scaling, there is one setting called "Removal policy." Which of the following statements is true if the removal policy is set to "the earliest instance with the scaling configuration"?

• A.The earliest ECS instances created by Auto Scaling will be removed first
• B.The oldest ECS instances will be removed
• C.Only the earliest ECS instances created manually will be removed
• D.The earliest ECS instances added to the scaling group will be removed

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Alibaba Cloud Object Storage Service (OSS) provides massive, secure, relatively low-cost, and highly reliable cloud storage services. Users can upload and download files to/from OSS via the Web Console or API.

• A.True
• B.False

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