Teach Cloud - Cloud, DevOps, and Python Backend Development Blog

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Aug 12, 2026

Quiz: What is the purpose of the Terraform state file (<code>terraform.tfstate</code>)?

The Terraform state file records the current state of managed infrastructure and metadata, enabling Terraform to calculate required changes during plans/applies.

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❓ Quiz Question

Aug 12, 2026

Quiz: Which Kubernetes Service type exposes a service externally using a cloud provider load balancer?

A LoadBalancer service type automatically provisions an external cloud load balancer (e.g. AWS ALB/NLB) and routes public traffic to the backend Pods.

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Aug 12, 2026

Quiz: How does Docker image layer caching work when executing a Dockerfile?

Docker executes Dockerfile commands sequentially and checks its build cache; if a layer changes (e.g. COPY . ), all following layers must be rebuilt .

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❓ Quiz Question

Aug 12, 2026

Quiz: What is the key difference between Kubernetes ConfigMaps and Secrets?

ConfigMaps hold general configuration data as key-value pairs; Secrets store sensitive data like credentials and TLS keys with restricted access controls.

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❓ Quiz Question

Aug 12, 2026

Quiz: What is a Blue/Green Deployment strategy?

Blue/Green deployments minimize downtime and risk by spinning up the new release alongside the current version and flipping traffic at the router once validated.

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❓ Quiz Question

Aug 12, 2026