A company has deployed a custom DNS server in AWS. The Security Engineer wants to ensure that Amazon EC2 instances cannot use the Amazon-provided DNS.
How can the Security Engineer block access to the Amazon-provided DNS in the VPC?
A. Deny access to the Amazon DNS IP within all security groups.
B. Add a rule to all network access control lists that deny access to the Amazon DNS IP.
C. Add a route to all route tables that black holes traffic to the Amazon DNS IP.
D. Disable DNS resolution within the VPC configuration.
