You have a hybrid environment in which your VPC queries your on-premises DNS server for up resources in your environment. The EC2 instances in your VPC are unable to resolve on-premises resources. What are two possible reasons for this problem? (Choose two.)

by totorovn at Feb. 19, 2025, 10:20 am

A. Your NACL is blocking UDP port 53 outbound
B. Your security group is blocking port 53 inbound
C. Your NACL is blocking TCP port 53 outbound.
D. Your on-premises firewall is blocking port 443

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You have a hybrid environment in which your VPC queries your on-premises DNS server for up resources in your environment. The EC2 instances in your VPC are unable to resolve on-premises resources. What are two possible reasons for this problem? (Choose two.)

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