CDM CDM Cloud & Containerization

Question 1

What is the primary role of a container orchestration platform like Kubernetes in a DevOps environment?

Accepted Answer

To automate the deployment, scaling, and management of containerized applications across a cluster

Answer

To compile application source code into container images

Answer

To provide a graphical UI for developers to browse container registries

Answer

To replace CI/CD pipelines for application delivery

Question 2

In Docker, what is the difference between a Docker image and a Docker container?

Accepted Answer

An image is a read-only blueprint; a container is a running instance of that image

Answer

An image is a running instance; a container is a blueprint

Answer

Images are used in development; containers are used only in production

Answer

There is no difference — the terms are interchangeable

Question 3

Which Kubernetes object is responsible for ensuring that a specified number of identical pod replicas are running at all times?

Accepted Answer

ReplicaSet

Answer

ConfigMap

Answer

Namespace

Answer

PersistentVolume

Question 4

What is a multi-stage Docker build and what is its main benefit?

Accepted Answer

A Dockerfile technique that uses intermediate build stages to produce a smaller final image by excluding build-time dependencies

Answer

A build that runs across multiple CI/CD pipelines simultaneously

Answer

A build strategy that deploys to multiple cloud regions at once

Answer

A method for running multiple Dockerfiles in sequence in the same directory

Question 5

What does 'immutable infrastructure' mean in the context of cloud and containerization?

Accepted Answer

Servers and containers that are never modified after deployment — changes are made by replacing, not patching

Answer

Infrastructure that can never be scaled

Answer

Infrastructure that is locked to a single cloud provider

Answer

Infrastructure provisioned manually and kept unchanged

Question 6

Which cloud service model gives a DevOps team the most control over the operating system and runtime environment?

Accepted Answer

IaaS (Infrastructure as a Service)

Answer

SaaS (Software as a Service)

Answer

PaaS (Platform as a Service)

Answer

FaaS (Function as a Service)