First round was more on the AWS service they have on a very high level, if you're a certified AWS Associate this should be eassy-peassy for you. Second round was on reviewing an architecture and then letting you decide which AWS services you would use to implement the architecture.
just browse the glassdoor and internet.. it's full of examples.. mine weren't different from those.
What is , out of all the Amazon Leadership Principles, you find is the most important one
What is CDN? Why do we need it? How does it work?
Why do we need IPv6?
What are common DNS record types?
What is SAML? What it is used for?
What is CI/CD? What is CI used for? What is CD used for?
Explain Blue/Green pipeline. What are the benefits?
How do you check CPU and memory usage on a Linux machine?
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