How can you invalidate the Docker build cache for a specific instruction?
By deleting the corresponding image layer.
All of the above.
By modifying the instruction itself.
By using the --no-cache flag during the build process.
--no-cache
What role does a manager node play in a Docker Swarm cluster?
Provides networking and load balancing for the cluster
Stores and distributes Docker images to worker nodes
Manages cluster state, schedules tasks, and ensures service availability
Executes the actual application tasks within containers
How can you create a custom network with specific configurations (e.g., IP range, driver) in Docker Compose?
Docker Compose does not allow custom network configurations
By using the docker network create command separately and referencing the network in the docker-compose.yml file
docker network create
docker-compose.yml
By specifying the network configurations within the networks section of the docker-compose.yml file
networks
By defining the network within the services section of the docker-compose.yml file
services
Which statement accurately describes a drawback of using bind mounts for sensitive data?
Bind mounts provide enhanced security for storing sensitive data.
Bind mounts can expose parts of the host's filesystem to containers, potentially leading to security risks.
Bind mounts are less efficient than Docker volumes for handling large data volumes.
Bind mounts are not supported in the latest versions of Docker.
What is the purpose of a Swarm service's 'update_config' setting?
To change the environment variables for the service's containers
To automatically update the service's Docker image to the latest version
To configure how updates to the service are rolled out across replicas
To scale the number of replicas for the service up or down
What is the role of a Docker registry in a CI/CD pipeline?
To execute automated tests within isolated containers
To store and manage Docker images
To monitor application performance in real-time
To define the steps of the continuous integration process
Which command is used to initialize a Docker Swarm?
docker swarm start
docker swarm init
docker swarm create
docker swarm up
What is a significant benefit of using a volume driver that supports cloud storage?
Reduced need for data backups and disaster recovery planning.
Increased complexity in managing data.
Enhanced data durability and availability through redundancy and backups.
Improved performance for data-intensive applications.
In a multi-stage Docker build, how can you refer to a specific stage by its index?
By using a numerical index starting from 0.
By using the stage's name.
It's not possible to refer to stages by index.
By using a numerical index starting from 1.
How can you control access to images stored in a private Docker Registry?
By using encryption to secure images during transmission
By configuring network firewalls to restrict access by IP address
By implementing authentication and authorization mechanisms within the registry
By regularly updating the registry software to patch vulnerabilities