352.4 Container Orchestration Platforms (weight: 3) LPIC-3-VIRTUALIZATION Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which of the following is a primary benefit of using a container orchestration platform?

   • AIt automatically scales container instances based on demand and manages their lifecycle.
   • BIt provides a graphical interface for manually starting and stopping individual containers.
   • CIt replaces the need for a container runtime like containerd or runc.
   • DIt eliminates the need for container images by running applications directly from source code.
   Reveal Solution Discussion Select an answer first
2. 7application · medium

   A company has a Docker Swarm cluster with three manager nodes and five worker nodes. They deploy a service with `--replicas 10`. One worker node fails. What does Swarm do by default?

   • AIt stops the service and waits for the node to come back online.
   • BIt automatically reduces the replica count to 8 to match the remaining capacity.
   • CIt reschedules the tasks that were running on the failed node to other healthy nodes to maintain the desired state of 10 replicas.
   • DIt promotes a worker node to manager to replace the failed node.
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   What is Mesosphere DC/OS?

   • AA monitoring tool for containers
   • BA Kubernetes distribution
   • CA container image registry
   • DA distributed operating system for running containers and data services
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A startup runs a web application as containers on a single Docker host. As traffic grows, they need to distribute requests across multiple replicas, automatically restart failed containers, and provide a stable network endpoint that does not change when replicas are replaced. Which approach directly addresses these requirements?

   • ACreate a Docker network and assign static IPs to each container so the load balancer can always reach them.
   • BRun multiple containers manually with `docker run -d` and use an external load balancer configured with the container IPs.
   • CDeploy the application using Docker Compose with a fixed container name and a host port mapping.
   • DUse a container orchestration platform such as Kubernetes with a Deployment and a Service.
   Reveal Solution Discussion Select an answer first
6. 10expert · medium

   A Kubernetes cluster has a Deployment with `replicas: 3`. The team notices that one pod is frequently restarting due to a crash loop. They want to ensure that the application remains available while they debug the issue. They also want to prevent the crashing pod from receiving traffic. What should they do?

   • AAdd a readiness probe to the pod's container that fails while the application is unhealthy.
   • BDelete the crashing pod and let the Deployment recreate it.
   • CScale the Deployment down to 2 replicas.
   • DChange the Service type to NodePort.
   Reveal Solution Discussion Select an answer first