Oracle Cloud Infrastructure 2019 Developer Associate — Question 4

Your company is moving an Internet-facing, 2-tier web application into Oracle Cloud Infrastructure. The application must have a highly available architecture.
Which two design options would you consider? (Choose two.)

Answer options

• A. Configure a Dynamic Route Gateway in your VCN and make it highly available.
• B. Configure a NAT instance in your Virtual Cloud Network (VCN). Create a route rule by using the private IP of the NAT instance as a route target for all the private subnets in your VCN.
• C. Create an Internet Gateway and attach it to your VCN. Deploy public load balancer nodes into two Available Domains.
• D. Place all web servers behind a public load balancer.

Correct answer: B, C

Explanation

Option B is correct because configuring a NAT instance with the appropriate route rules allows for private subnet resources to communicate with the Internet while maintaining high availability. Option C is also correct as deploying public load balancer nodes in two Available Domains ensures redundancy and fault tolerance. Options A and D do not sufficiently address high availability for the architecture as specified.