Below are some of the questions I could remember that they asked. Hope it helps What is CIDR block and what do you use it for Troubleshoot a webpage that can't access the DB Troubleshoot why you can't access a webpage server What is DOS/DDOS and how to mitigate this What is CDN and why is it important who would setup the CDN What is database indexing and why is it important Difference between NOSQL and RDBS Difference between object storage and file system Difference between Asymetric and symetric crypto Whats a three tier web page architect,and how do you monitor to see a bottleneck and how do you improve it How would you design an e-commerce web page and how would you improve it What is MSA If you collected logs and wanted to store them for 14 days then move them over to permanent storage for a few years how would you do this How would you analyze objects stored in S3 and share them with users What ports do databases use Difference between IOPS, Throughput, and Latency What is a web application firewall and how do you use it, what layer is it on How would you monitor utilization of equipment in a datacenter How do you secure a web site How would a developer make an API friendlier Of the 14 principles which one do you relate with mostly and use at work, Which one do you not agree with