Containerization CV0-004 Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A media company has a web application that experiences unpredictable spikes in traffic during product launches. The application consists of several stateless microservices. The operations team wants to ensure the application can automatically scale out during spikes and scale in during low traffic, without manual intervention. Which solution should they choose?

   • ACreate a scheduled job to add VMs during product launch hours.
   • BDeploy the microservices on a container orchestrator with horizontal pod autoscaling enabled.
   • CProvision a large VM with enough resources to handle the maximum expected traffic.
   • DUse a load balancer to distribute traffic to a fixed number of VMs.
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2. 2expert · hard

   A DevOps team is building a CI/CD pipeline. They want to ensure that the container image used in production is exactly the same one that was tested. They also want to minimize the attack surface by using minimal images. Which approach should they take?

   • AStore the image in a public registry to make it easy to pull.
   • BBuild the image once, scan it for vulnerabilities, sign it, and store it in a private registry for deployment.
   • CUse the latest base image for every build to ensure security patches are included.
   • DRebuild the image in each environment to ensure it is fresh.
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4. 3application · medium

   A company is deploying a containerized application across multiple nodes in a cluster. They need to ensure that if a container fails, it is automatically restarted, and if a node fails, the containers are rescheduled to other healthy nodes. Which feature of a container orchestrator provides this capability?

   • ASecret management.
   • BSelf-healing.
   • CService discovery.
   • DRolling updates.
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5. 4foundation · easy

   What is the primary role of a container orchestration tool?

   • ATo secure the host operating system from container escapes.
   • BTo build container images from source code.
   • CTo automate the deployment, scaling, and management of containerized applications.
   • DTo provide a graphical interface for editing container images.
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6. 5application · medium

   A development team is comparing containerization and virtualization for a new microservices project. They have 20 small services that need to run in isolated environments. The team's primary concern is maximizing the number of services per host while minimizing overhead. Which approach is more suitable and why?

   • AContainerization, because containers share the host OS kernel and require fewer resources than VMs.
   • BVirtualization, because VMs provide stronger isolation and are more secure.
   • CVirtualization, because VMs start faster than containers.
   • DContainerization, because containers are easier to secure than VMs.
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