AWS Certified DevOps Engineer - Professional DOP-C02 — Topic 1 Question 40

Question

A company requires that its internally facing web application be highly available. The architecture is made up of one Amazon EC2 web server instance and one NAT instance that provides outbound internet access for updates and accessing public data. Which combination of architecture adjustments should the company implement to achieve high availability? (Choose two.)

Accepted Answer

Correct answer: B, D. The correct answer is B, D. Option B: Create additional EC2 instances spanning multiple Availability Zones. Add an Application Load Balancer to split the load between them. Option D: Replace the NAT instance with a NAT gateway in each Availability Zone. Update the route tables. Amazon EC2 provides resizable virtual servers when you need full control of the operating system. An Application Load Balancer distributes HTTP/HTTPS traffic and supports path/host routing. A load balancer distributes traffic across targets in multiple AZs for availability and scale. By spanning multiple Availability Zones / adding redundancy, this option provides the high availability and resilience required.

AWS Certified DevOps Engineer - Professional DOP-C02 — Question 40