If an ECS in a VPC cannot access the Internet in HUAWEI CLOUD Stack, which of the following are recommended troubleshooting operations for O & M personnel?
The best verified answer is A, B, and D . Huawei networking documentation shows that Internet access troubleshooting for cloud resources commonly involves checking whether an EIP is bound or whether a NAT gateway is configured , which supports A . Huawei guidance also explicitly refers to selecting or checking an appropriate EIP bandwidth , which supports D as a normal troubleshooting item.
Huawei documentation also shows that network ACL rules are part of VPC access control and can affect connectivity. Because network ACLs are stateless and traffic validation depends on rule direction, checking ACL rules is a reasonable O & M troubleshooting operation. In your option wording, inbound rules are still part of that validation scope, so B is acceptable.
By contrast, checking route configurations on core switches is not the standard first-line troubleshooting action for tenant-side VPC Internet access in Huawei Cloud Stack service O & M. The cloud service boundary is usually diagnosed first through NAT, ACL, and EIP-related configuration. Therefore, the verified answer is A, B, and D .
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