Deployment, Scaling, Observability & Modern Web/Application Servers – Practice Questions

Q1. A company has a web front-end in a public subnet (multiple instances) and an application tier in a private subnet (multiple instances). They want to evenly distribute requests at both tiers and ensure the app tier isn’t directly exposed to the internet. Which architecture meets these requirements? Use an internet-facing load balancer for the web tier, and an internal load balancer between web and app tiers.
Use one internet-facing load balancer that sends traffic directly to app servers in the private subnet.
Assign public IPs to all web servers and have them directly communicate with app servers (no load balancer for app).
Place a load balancer only in front of the database that the app tier uses.

Q2. After adding a comment feature, you discover users can include

system-design