What is a CIDR block in cloud networking?
It expresses a range of IP addresses using a network prefix, such as 10.0.0.0/24. Plan ranges that leave space for growth and avoid overlap with networks you need to connect.
What is the difference between an AWS route table and a security group?
A route table determines where traffic is sent. A security group controls which inbound and outbound traffic is permitted for associated resources.
What is Amazon EBS used for?
Amazon Elastic Block Store provides block storage for EC2 instances, such as a disk for an operating system or application data.
What does an S3 lifecycle rule do?
It automates transitions or expiration for eligible objects. Review the retention period and matching filters before enabling expiration.
What is a Kubernetes Service?
It provides a stable way to reach a set of Pods even as individual Pods are replaced. Its selector commonly identifies the backing Pods.
What is a Kubernetes liveness probe?
It tells Kubernetes whether a container should be restarted. Configure it to detect genuine failures without restarting a slow but healthy application.
What is a rolling deployment?
It replaces running instances in stages. Configure health checks and rollout limits so enough capacity stays available during the change.
Why separate staging from production?
Staging lets you validate a release before exposing it to customers. Keep access and credentials separate and avoid copying private production data into it.
