Cloud Fundamentals Course
Cloud Fundamentals
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Advanced

Architecture Design Questions

Definition

The ultimate system design interview. Candidates must draw and explain a complete, highly-available cloud architecture on a whiteboard.

Explain Like I'm New

Designing the blueprint for a massive skyscraper from scratch.

Real World Example

Question: 'Design Netflix on AWS. Explain the DNS, Load Balancers, Web Tier, Database Tier, Caching, and CDN components.'

Common Use Cases

  • •Principal Cloud Architect roles
  • •System Design Interviews

Interview Questions

basic

  • Why do almost all enterprise architectures place their databases in a 'Private Subnet'?

intermediate

  • In a global architecture, how does a CDN (Content Delivery Network) reduce the load on your primary web servers?

Flash Cards

Question

Why Private Subnets for DBs?

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Answer

Security. A private subnet has no direct route to the public internet. This makes it mathematically impossible for a hacker sitting at home to establish a direct connection to the database. They must go through the heavily guarded web servers first.

Question

How does CDN reduce load?

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Answer

A CDN caches static files (images, JS, CSS) on servers geographically close to users. When a user requests an image, the CDN serves it instantly. The request never reaches your primary web server, saving massive amounts of CPU power and bandwidth on your end.