02 - Introduction to Containers and Their Advantages
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Questions and Answers

What is the main advantage of containers in terms of resource usage?

  • Containers require additional operating systems to run.
  • Containers have high resource usage compared to traditional virtual machines.
  • Containers are heavyweight and consume more resources.
  • Containers utilize the host system's kernel efficiently. (correct)

    • Which problem do containers help in reducing according to the text?

  • Security vulnerabilities
  • Complex deployment processes
  • "It works on my machine" problem (correct)
  • Resource inefficiency

    • How do containers contribute to rapid deployment and scaling?

  • Containers have slow runtimes which enable quick scaling.
  • Containers cannot be scaled efficiently.
  • Containers are heavy, allowing for faster deployment.
  • Containers can be quickly started, replicated, and stopped due to their small size and fast runtimes. (correct)

    • Which advantage do containers provide in terms of security?

    <p>Containers enhance security through process isolation. (A)</p> Signup and view all the answers

    What makes containers ideal for hosting individual services in a microservices architecture?

    <p>Isolation and scalability (A)</p> Signup and view all the answers

    How do containers contribute to enhancing development and deployment speeds in DevOps and Agile environments?

    <p>By simplifying deployment and management processes (C)</p> Signup and view all the answers

    What is a key advantage of containers over virtual machines?

    <p>Containers are highly scalable. (B)</p> Signup and view all the answers

    In terms of resource utilization, how do containers compare to virtual machines?

    <p>Containers have lower resource utilization. (D)</p> Signup and view all the answers

    Which of the following is a common use case for containers?

    <p>Microservices architectures. (D)</p> Signup and view all the answers

    Why might modern, cloud-native applications be more suited to containers?

    <p>Because containers are highly scalable and portable. (B)</p> Signup and view all the answers

    Which factor would make virtual machines a better choice over containers for an application?

    <p>Need for extensive OS customization. (B)</p> Signup and view all the answers

    What makes containers more efficient than virtual machines in resource-constrained environments?

    <p>Containers are lightweight and have lower resource utilization. (C)</p> Signup and view all the answers

    What is the main advantage of containers utilizing the host's OS kernel?

    <p>Efficiently allowing multiple containers to run on the same kernel (B)</p> Signup and view all the answers

    How do containers ensure that processes in one container cannot interfere with those in another?

    <p>By using an advanced isolation mechanism based on namespaces (C)</p> Signup and view all the answers

    What are container images primarily used for?

    <p>Storing and sharing container images in centralized hubs (B)</p> Signup and view all the answers

    Which mechanism is responsible for allocating and limiting resources like CPU, memory, and I/O for containers?

    <p>Resource management tools similar to cgroups (B)</p> Signup and view all the answers

    Why do containers share common binaries and libraries with the host?

    <p>To reduce redundancy and save space (D)</p> Signup and view all the answers

    What technology ensures that containers provide isolated workspaces including process trees, network interfaces, and file systems?

    <p>Advanced isolation mechanisms based on namespaces (B)</p> Signup and view all the answers

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