Containerization with Docker MCQs

Which of the following best describes containerization?

a) Packaging applications with dependencies into isolated units

b) Running applications directly on hardware

c) Deploying applications manually

d) Monitoring production logs

View Answer

Correct answer: A — Packaging applications with dependencies into isolated units
Docker is primarily used for:

a) Creating and managing containers

b) Running CI/CD pipelines

c) Performing unit testing

d) Monitoring logs

View Answer

Correct answer: A — Creating and managing containers
Kubernetes is used for:

a) Orchestrating containerized applications

b) Running unit tests

c) Performing performance testing

d) Monitoring usability

View Answer

Correct answer: A — Orchestrating containerized applications
Which of the following is NOT a containerization tool?

a) Docker

b) Podman

c) Vagrant

d) LXC

View Answer

Correct answer: C — Vagrant
Docker images are built using:

a) Dockerfile

b) JSON file

c) XML file

d) TXT file

View Answer

Correct answer: A — Dockerfile
Which of the following is true about Kubernetes pods?

a) They are the smallest deployable units in Kubernetes

b) They are only used for monitoring

c) They are only used for testing

d) They are only used for CI/CD

View Answer

Correct answer: A — They are the smallest deployable units in Kubernetes
Docker Compose is used to:

a) Define and run multi-container applications

b) Run single container only

c) Run CI/CD pipelines

d) Run performance tests

View Answer

Correct answer: A — Define and run multi-container applications
Which of the following is true about Kubernetes services?

a) They expose pods to network traffic

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They expose pods to network traffic
Which of the following is a Kubernetes deployment strategy?

a) Rolling updates

b) Manual updates only

c) Usability updates only

d) Integration updates only

View Answer

Correct answer: A — Rolling updates
Helm is used for:

a) Managing Kubernetes applications with charts

b) Running unit tests

c) Performing performance testing

d) Monitoring logs

View Answer

Correct answer: A — Managing Kubernetes applications with charts
What will be printed?

1 echo "Eduinq Container Test"

a) Eduinq Container Test

b) Container Test

c) No output

d) Error

View Answer

Correct answer: A — Eduinq Container Test
Which of the following is true about Docker volumes?

a) They persist data outside containers

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They persist data outside containers
Kubernetes ConfigMaps are used to:

a) Store configuration data

b) Store performance metrics

c) Store usability data

d) Store integration data

View Answer

Correct answer: A — Store configuration data
Which of the following is true about Kubernetes namespaces?

a) They logically isolate resources within a cluster

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They logically isolate resources within a cluster
Docker Hub is:

a) A public registry for Docker images

b) A CI/CD tool

c) A performance testing tool

d) A monitoring tool

View Answer

Correct answer: A — A public registry for Docker images
Which of the following is true about Kubernetes deployments?

a) They manage desired state of pods

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They manage desired state of pods
Kubernetes StatefulSets are used for:

a) Managing stateful applications

b) Managing stateless applications only

c) Managing usability tests

d) Managing integration tests

View Answer

Correct answer: A — Managing stateful applications
Which of the following is true about Docker networking?

a) It allows containers to communicate with each other

b) It validates performance only

c) It validates usability only

d) It validates integration only

View Answer

Correct answer: A — It allows containers to communicate with each other
Kubernetes Ingress is used to:

a) Manage external access to services

b) Manage performance only

c) Manage usability only

d) Manage integration only

View Answer

Correct answer: A — Manage external access to services
Which of the following is true about container orchestration?

a) It automates deployment, scaling, and management of containers

b) It validates performance only

c) It validates usability only

d) It validates integration only

View Answer

Correct answer: A — It automates deployment, scaling, and management of containers
Which of the following is true about Docker containers?

a) They are lightweight and portable

b) They require full virtual machines

c) They run only on Windows

d) They run only on Linux

View Answer

Correct answer: A — They are lightweight and portable
Kubernetes nodes are:

a) Worker machines in a cluster

b) Only monitoring servers

c) Only testing servers

d) Only CI/CD servers

View Answer

Correct answer: A — Worker machines in a cluster
Which of the following is true about Docker layers?

a) They allow efficient image storage and reuse

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They allow efficient image storage and reuse
Kubernetes ReplicaSets are used to:

a) Ensure a specified number of pod replicas are running

b) Validate performance only

c) Validate usability only

d) Validate integration only

View Answer

Correct answer: A — Ensure a specified number of pod replicas are running
Which of the following is true about Docker registries?

a) They store and distribute container images

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They store and distribute container images
Kubernetes DaemonSets are used to:

a) Run a copy of a pod on all nodes

b) Run pods only on master nodes

c) Run pods only on worker nodes

d) Run pods only manually

View Answer

Correct answer: A — Run a copy of a pod on all nodes
Which of the following is true about Docker Swarm?

a) It provides native container orchestration for Docker

b) It validates performance only

c) It validates usability only

d) It validates integration only

View Answer

Correct answer: A — It provides native container orchestration for Docker
Kubernetes Secrets are used to:

a) Store sensitive information securely

b) Store performance metrics

c) Store usability data

d) Store integration data

View Answer

Correct answer: A — Store sensitive information securely
Which of the following is true about container orchestration tools?

a) They automate deployment, scaling, and management of containers

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They automate deployment, scaling, and management of containers
Kubernetes kubelet is:

a) An agent that runs on each node

b) A monitoring tool

c) A CI/CD tool

d) A performance testing tool

View Answer

Correct answer: A — An agent that runs on each node
What will be printed?

1 echo "Eduinq Kubernetes Deployment"

a) Eduinq Kubernetes Deployment

b) Kubernetes Deployment

c) No output

d) Error

View Answer

Correct answer: A — Eduinq Kubernetes Deployment
Which of the following is true about Docker networking modes?

a) Bridge, Host, Overlay

b) Only Bridge

c) Only Host

d) Only Overlay

View Answer

Correct answer: A — Bridge, Host, Overlay
Kubernetes kube-proxy is responsible for:

a) Managing network rules for pods

b) Managing performance only

c) Managing usability only

d) Managing integration only

View Answer

Correct answer: A — Managing network rules for pods
Which of the following is true about Dockerfile instructions?

a) FROM, RUN, CMD, COPY

b) Only FROM

c) Only RUN

d) Only CMD

View Answer

Correct answer: A — FROM, RUN, CMD, COPY
Kubernetes etcd is used to:

a) Store cluster configuration data

b) Store performance metrics

c) Store usability data

d) Store integration data

View Answer

Correct answer: A — Store cluster configuration data
Which of the following is true about Docker Compose files?

a) They are written in YAML

b) They are written in JSON

c) They are written in XML

d) They are written in TXT

View Answer

Correct answer: A — They are written in YAML
Kubernetes labels are used to:

a) Organize and select resources

b) Validate performance only

c) Validate usability only

d) Validate integration only

View Answer

Correct answer: A — Organize and select resources
Which of the following is true about Docker container lifecycle?

a) Create, Start, Stop, Remove

b) Only Create

c) Only Start

d) Only Stop

View Answer

Correct answer: A — Create, Start, Stop, Remove
Kubernetes Helm charts are:

a) Packages of pre-configured Kubernetes resources

b) Packages of performance metrics

c) Packages of usability data

d) Packages of integration data

View Answer

Correct answer: A — Packages of pre-configured Kubernetes resources
Which of the following is true about container orchestration benefits?

a) Automated scaling, self-healing, efficient resource use

b) Only performance validation

c) Only usability validation

d) Only integration validation

View Answer

Correct answer: A — Automated scaling, self-healing, efficient resource use
Which of the following is true about Docker image tags?

a) They identify versions of images

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They identify versions of images
Kubernetes deployments support:

a) Rolling updates and rollbacks

b) Only rolling updates

c) Only rollbacks

d) Only manual updates

View Answer

Correct answer: A — Rolling updates and rollbacks
Which of the following is true about Docker container isolation?

a) It uses namespaces and cgroups

b) It uses only namespaces

c) It uses only cgroups

d) It uses only virtual machines

View Answer

Correct answer: A — It uses namespaces and cgroups
Kubernetes cluster autoscaler is used to:

a) Adjust the number of nodes based on demand

b) Adjust performance metrics only

c) Adjust usability only

d) Adjust integration only

View Answer

Correct answer: A — Adjust the number of nodes based on demand
Which of the following is true about Docker multi-stage builds?

a) They optimize image size by separating build and runtime stages

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They optimize image size by separating build and runtime stages
Kubernetes taints and tolerations are used to:

a) Control pod placement on nodes

b) Validate performance only

c) Validate usability only

d) Validate integration only

View Answer

Correct answer: A — Control pod placement on nodes
Which of the following is true about Docker overlay networks?

a) They enable multi-host communication for containers

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They enable multi-host communication for containers
Kubernetes Horizontal Pod Autoscaler adjusts:

a) Number of pods based on CPU/memory usage

b) Number of pods based on usability

c) Number of pods based on integration

d) Number of pods based on manual triggers

View Answer

Correct answer: A — Number of pods based on CPU/memory usage
Which of the following is true about Docker container resource limits?

a) They restrict CPU and memory usage

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They restrict CPU and memory usage
Which of the following best describes containerization and orchestration overall?

a) Packaging applications into containers and managing them with orchestration tools

b) Ensuring only performance correctness

c) Ensuring only usability correctness

d) Ensuring only integration correctness

View Answer

Correct answer: A — Packaging applications into containers and managing them with orchestration tools

Containerization with Docker MCQs

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