Orchestration CV0-004 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   An e-commerce company runs a containerized application on Kubernetes. During a flash sale, traffic to the web frontend increases by 400% for two hours. The cluster has enough spare capacity, and the company wants the number of frontend pods to increase automatically during the spike and decrease afterward without manual intervention. What should the team configure?

   • AA ClusterAutoscaler that adds more nodes to the cluster when pods cannot be scheduled.
   • BA VerticalPodAutoscaler that increases the CPU and memory limits of the existing frontend pods.
   • CA Kubernetes Service of type LoadBalancer to distribute traffic across the existing pods.
   • DA HorizontalPodAutoscaler that adjusts the replica count based on CPU utilization or custom metrics.
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2. 7application · medium

   A team is migrating a legacy application to Kubernetes. The application consists of a web frontend and a backend API. The frontend is configured with a hardcoded IP address to reach the backend. The team wants to change this so the frontend can find the backend using a stable name, regardless of where the backend pods are scheduled. What is the most appropriate Kubernetes feature to use?

   • ACreate a Service for the backend and configure the frontend to use the Service's DNS name.
   • BDeploy the frontend and backend in the same pod so they share a network namespace.
   • CUse a ConfigMap to store the backend pod's IP address and mount it into the frontend.
   • DAssign a static IP address to the backend pod using a hostAlias.
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4. 8application · medium

   A company runs a web application on Docker Swarm. The application experiences variable traffic, and the team wants to automatically increase the number of replicas when CPU usage is high and decrease them when it is low. What should they configure?

   • AUse Docker Compose's scale feature to adjust replicas automatically.
   • BSet the service's replicas to a high number and rely on the load balancer to distribute traffic.
   • CUse a third-party tool or script that monitors CPU usage and calls docker service scale to adjust replicas.
   • DEnable Swarm's built-in autoscaling by setting a CPU utilization target on the service.
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5. 9foundation · easy

   Which container orchestration tool is often chosen for its simplicity and tight integration with Docker, making it suitable for smaller deployments?

   • AOpenStack
   • BKubernetes
   • CDocker Swarm
   • DApache Mesos
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6. 10foundation · easy

   Which of the following is a core responsibility of a container orchestration platform?

   • ACompiling application binaries into executables
   • BReplacing the need for a container runtime entirely
   • CManaging container lifecycle across multiple hosts
   • DProviding a graphical interface for editing container images
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