For Alibaba Cloud ECS instances in a VPC, you can configure Resource Access Management settings on ECS instances through Security Groups. Which of the following statements is correct?
A.
A Security Group can contain ECS instances of different VPCs in the same zone.
B.
A Security Group can contain ECS instances of different VPCs in the same region.
C.
A Security Group can only contain ECS instances of the same VPC in the same zone.
D.
A Security Group can contain ECS instances of the same VPC in the same region.
Security Groups in Alibaba Cloud are VPC-specific. They can only include ECS instances within the same VPC, but they are not restricted to a single zone within the region. This means a Security Group can manage access rules across multiple ECS instances in the same VPC, regardless of the specific zone they are in, as long as they are within the same region. This ensures VPC security compliance across zones in the same region.
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