Placement Oriented DevOps week - 2 Test ( Docker )

What is the primary advantage of horizontal scaling in a container cluster?

• Reduced complexity

• Improved fault tolerance

• • Lower cost

• Simplified configuration

Which command initializes a Docker Swarm?

• docker swarm create

• docker swarm init

• • docker init

• docker cluster init

In a Docker Swarm, what is the role of a master node?

•  Manage and orchestrate the swarm

• • Execute containerized applications

• • Provide storage

• • Monitor network traffic

Which Docker command is used to deploy a service across a Swarm cluster?

• • docker run

• • docker deploy

• • docker service deploy

• • docker service create

1. What does SPOF stand for in a cluster context?

• • Single Point of Function

• Secure Point of Failure

• Single Point of Failure

• System Point of Function

What keyword is used in Docker Swarm to define the number of task replicas?

• replicate

• instances

• replicas

• copies

Which of the following best describes 'failover' in a cluster?

• • Automatically switching to a standby system upon failure

• Manually restarting failed services

• Balancing load across multiple nodes

• •  Scaling down services to reduce cost

What is 'state' in the context of container orchestration?

• • The physical location of containers

• •  The desired configuration of services and tasks

• The current memory usage

• •  The CPU utilization

1. What does scaling out refer to in container clusters?

•  Increasing resources of existing node

• • Adding more nodes to the cluster

• • Removing nodes from the cluster

• Reducing the number of containers

1. Which Docker command is used to scale a service in a Swarm?

• docker service scale

• • docker scale service

• • docker service replicate

• • docker service resize