Interview Q&A / AWS & Cloud
AWS & Cloud interview questions
EC2, S3, Lambda, IAM and VPC basics, with when to pick which service.
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- What are the Route 53 routing policies and when would you use each?
Simple returns a record. Weighted splits traffic by percentage. Latency sends users to the lowest-latency Region. Failover switches to a backup when the primary is unhealthy. Geolocation routes by user location. Multivalue returns several healthy IPs.
IntermediateQuick answer1 min read - What is the difference between an alias record and a CNAME record in Route 53?
A CNAME maps one name to another name and cannot be used at the zone apex like example.com. An alias record is a Route 53 feature that can point even the apex to AWS resources, is free to query, and follows the resource's IP changes.
IntermediateQuick answer1 min read