Advanced Docker Concepts MCQs

Which of the following best describes Docker multi-stage builds?

a) Optimizing image size by separating build and runtime stages

b) Running multiple containers in parallel

c) Managing orchestration of containers

d) Monitoring container logs

View Answer

Correct answer: A — Optimizing image size by separating build and runtime stages
Docker image layers are used to:

a) Reuse and cache parts of images

b) Validate performance only

c) Validate usability only

d) Validate integration only

View Answer

Correct answer: A — Reuse and cache parts of images
Which of the following is true about Docker security best practices?

a) Use minimal base images

b) Always run containers as root

c) Disable logging

d) Avoid using namespaces

View Answer

Correct answer: A — Use minimal base images
Docker resource limits can be set using:

a) --cpus and --memory flags

b) Only --cpus flag

c) Only --memory flag

d) Only --disk flag

View Answer

Correct answer: A — --cpus and --memory flags
Which of the following is true about Docker networking modes?

a) Bridge, Host, Overlay, Macvlan

b) Only Bridge

c) Only Host

d) Only Overlay

View Answer

Correct answer: A — Bridge, Host, Overlay, Macvlan
Docker Swarm provides:

a) Native container orchestration for Docker

b) Only performance monitoring

c) Only usability testing

d) Only integration testing

View Answer

Correct answer: A — Native container orchestration for Docker
Which of the following is true about Docker private registries?

a) They allow hosting custom images securely

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They allow hosting custom images securely
Docker image signing ensures:

a) Image authenticity and integrity

b) Performance validation only

c) Usability validation only

d) Integration validation only

View Answer

Correct answer: A — Image authenticity and integrity
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
Docker Compose advanced features include:

a) Defining networks, volumes, and multiple services

b) Defining only single services

c) Defining only performance metrics

d) Defining only usability metrics

View Answer

Correct answer: A — Defining networks, volumes, and multiple services
What will be printed?

1 echo "Eduinq Advanced Docker Test"

a) Eduinq Advanced Docker Test

b) Advanced Docker Test

c) No output

d) Error

View Answer

Correct answer: A — Eduinq Advanced Docker Test
Which of the following is true about Docker health checks?

a) They monitor container status and restart if unhealthy

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They monitor container status and restart if unhealthy
Docker overlay networks are used for:

a) Multi-host container communication

b) Single-host communication only

c) Manual communication only

d) Integration testing only

View Answer

Correct answer: A — Multi-host container communication
Which of the following is true about Docker secrets?

a) They store sensitive data securely in Swarm mode

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They store sensitive data securely in Swarm mode
Docker logging drivers include:

a) json-file, syslog, fluentd

b) Only json-file

c) Only syslog

d) Only fluentd

View Answer

Correct answer: A — json-file, syslog, fluentd
Which of the following is true about Docker resource monitoring?

a) docker stats command shows CPU and memory usage

b) docker logs command shows CPU usage

c) docker run command shows memory usage

d) docker exec command shows disk usage

View Answer

Correct answer: A — docker stats command shows CPU and memory usage
Docker Swarm services can be scaled using:

a) docker service scale command

b) docker run command

c) docker logs command

d) docker exec command

View Answer

Correct answer: A — docker service scale command
Which of the following is true about Docker namespaces?

a) They provide isolation for processes, networks, and mounts

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They provide isolation for processes, networks, and mounts
Docker image pruning is used to:

a) Remove unused images and free space

b) Validate performance only

c) Validate usability only

d) Validate integration only

View Answer

Correct answer: A — Remove unused images and free space
Which of the following is true about advanced Docker networking?

a) Macvlan allows containers to appear as physical devices on the network

b) Bridge networking is the only option

c) Host networking is the only option

d) Overlay networking is the only option

View Answer

Correct answer: A — Macvlan allows containers to appear as physical devices on the network
Which of the following is true about Docker image optimization?

a) Use smaller base images and multi-stage builds

b) Always use large base images

c) Avoid caching layers

d) Disable pruning

View Answer

Correct answer: A — Use smaller base images and multi-stage builds
Docker content trust ensures:

a) Images are signed and verified before use

b) Images are always public

c) Images are stored in plain text

d) Images are never verified

View Answer

Correct answer: A — Images are signed and verified before use
Which of the following is true about Docker Swarm overlay networks?

a) They enable communication across multiple nodes

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They enable communication across multiple nodes
Docker volume drivers allow:

a) Integration with external storage systems

b) Validation of performance only

c) Validation of usability only

d) Validation of integration only

View Answer

Correct answer: A — Integration with external storage systems
Which of the following is true about Docker resource constraints?

a) They prevent containers from consuming excessive CPU/memory

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They prevent containers from consuming excessive CPU/memory
Docker Swarm mode supports:

a) Service discovery and load balancing

b) Only manual discovery

c) Only manual balancing

d) Only integration balancing

View Answer

Correct answer: A — Service discovery and load balancing
Which of the following is true about Docker image layering?

a) Each instruction in Dockerfile creates a new layer

b) Layers are always merged into one

c) Layers are ignored during builds

d) Layers are deleted after builds

View Answer

Correct answer: A — Each instruction in Dockerfile creates a new layer
Docker prune commands are used to:

a) Remove unused containers, images, and networks

b) Validate performance only

c) Validate usability only

d) Validate integration only

View Answer

Correct answer: A — Remove unused containers, images, and networks
Which of the following is true about Docker Swarm scaling?

a) Services can be scaled horizontally by adding replicas

b) Services can only scale vertically

c) Services cannot be scaled

d) Services scale only manually

View Answer

Correct answer: A — Services can be scaled horizontally by adding replicas
Docker image digest represents:

a) A unique hash identifying an image

b) A performance metric

c) A usability metric

d) An integration metric

View Answer

Correct answer: A — A unique hash identifying an image
What will be printed?

1 echo "Eduinq Docker Security Test"

a) Eduinq Docker Security Test

b) Docker Security Test

c) No output

d) Error

View Answer

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

a) They isolate processes, networks, and mounts

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They isolate processes, networks, and mounts
Docker Swarm manager nodes are responsible for:

a) Orchestrating and managing cluster state

b) Running only worker tasks

c) Running only monitoring tasks

d) Running only CI/CD tasks

View Answer

Correct answer: A — Orchestrating and managing cluster state
Which of the following is true about Docker image caching?

a) It speeds up builds by reusing unchanged layers

b) It slows down builds intentionally

c) It deletes all layers automatically

d) It disables optimization

View Answer

Correct answer: A — It speeds up builds by reusing unchanged layers
Docker secrets in Swarm mode are:

a) Encrypted and mounted into containers securely

b) Stored in plain text

c) Always public

d) Never used

View Answer

Correct answer: A — Encrypted and mounted into containers securely
Which of the following is true about Docker Swarm rolling updates?

a) They update services gradually without downtime

b) They update all services at once

c) They update only staging services

d) They update only manually

View Answer

Correct answer: A — They update services gradually without downtime
Docker image layers can be inspected using:

a) docker history command

b) docker logs command

c) docker exec command

d) docker run command

View Answer

Correct answer: A — docker history command
Which of the following is true about Docker Swarm fault tolerance?

a) Replicas are redistributed if nodes fail

b) Replicas are deleted if nodes fail

c) Replicas are ignored if nodes fail

d) Replicas are stopped if nodes fail

View Answer

Correct answer: A — Replicas are redistributed if nodes fail
Docker image build context includes:

a) Files in the directory sent to the Docker daemon

b) Only Dockerfile

c) Only JSON files

d) Only XML files

View Answer

Correct answer: A — Files in the directory sent to the Docker daemon
Which of the following is true about Docker Swarm service discovery?

a) Services are automatically assigned DNS names

b) Services are discovered only manually

c) Services are discovered only by IP

d) Services are never discovered

View Answer

Correct answer: A — Services are automatically assigned DNS names
Which of the following is true about Docker image optimization techniques?

a) Minimize layers and use .dockerignore

b) Always maximize layers

c) Avoid using .dockerignore

d) Disable caching

View Answer

Correct answer: A — Minimize layers and use .dockerignore
Docker Swarm supports constraints to:

a) Control placement of services on nodes

b) Validate performance only

c) Validate usability only

d) Validate integration only

View Answer

Correct answer: A — Control placement of services on nodes
Which of the following is true about Docker image registries?

a) They can be public or private

b) They are always public

c) They are always private

d) They are never used

View Answer

Correct answer: A — They can be public or private
Docker Swarm overlay networks provide:

a) Secure communication between services across nodes

b) Only manual communication

c) Only single-host communication

d) Only integration communication

View Answer

Correct answer: A — Secure communication between services across nodes
Which of the following is true about Docker image layers?

a) They are immutable once created

b) They are always mutable

c) They are deleted after builds

d) They are ignored during builds

View Answer

Correct answer: A — They are immutable once created
Docker Swarm rolling updates can be configured with:

a) Update delay and parallelism settings

b) Only update delay

c) Only parallelism

d) Only manual updates

View Answer

Correct answer: A — Update delay and parallelism settings
Which of the following is true about Docker image tagging?

a) Tags identify versions and variants of images

b) Tags validate performance only

c) Tags validate usability only

d) Tags validate integration only

View Answer

Correct answer: A — Tags identify versions and variants of images
Docker Swarm supports service constraints using:

a) Placement rules

b) Performance rules only

c) Usability rules only

d) Integration rules only

View Answer

Correct answer: A — Placement rules
Which of the following is true about Docker image digests?

a) They provide cryptographic verification of images

b) They validate performance only

c) They validate usability only

d) They validate integration only

View Answer

Correct answer: A — They provide cryptographic verification of images
Which of the following best describes advanced Docker concepts overall?

a) Techniques for optimizing, securing, and orchestrating Docker containers

b) Ensuring only performance correctness

c) Ensuring only usability correctness

d) Ensuring only integration correctness

View Answer

Correct answer: A — Techniques for optimizing, securing, and orchestrating Docker containers

Advanced Docker Concepts MCQs

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