Cloud Computing Overview & Adoption
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Questions and Answers

What is a primary characteristic of cloud computing?

  • Users can access files and applications via a web browser. (correct)
  • Resources cannot be scaled according to demand.
  • It operates only through dedicated servers.
  • It requires all software to be installed locally.

    • Which of the following accurately describes the term 'elastic' in cloud computing?

  • Resources can be increased or decreased dynamically based on usage. (correct)
  • Users must pay a fixed monthly fee regardless of usage.
  • Resources can only be increased with a long-term commitment.
  • Elasticity is synonymous with permanent data storage.

    • What does the term 'pooled' refer to in the context of cloud computing?

  • All resources must be stored in a physical server room.
  • Hardware is shared among multiple organizations using virtualization. (correct)
  • Storage solutions are maintained offline for security.
  • Resources are exclusively dedicated to a single organization.

    • Which deployment method is NOT a type of cloud computing?

    <p>Scoped cloud computing</p> Signup and view all the answers

    What is one of the main benefits of moving to cloud computing for organizations?

    <p>Scalability which allows for adjusting resources as needed.</p> Signup and view all the answers

    What is a key benefit of public cloud computing related to costs?

    <p>Organizations can avoid large, up-front investments in hardware.</p> Signup and view all the answers

    Which service model provides users with access to software as a Web-based service?

    <p>Software as a Service (SaaS)</p> Signup and view all the answers

    What does IaaS primarily offer to organizations?

    <p>Hardware resources including servers and storage.</p> Signup and view all the answers

    What is a potential drawback of using public cloud computing?

    <p>Complex pricing arrangements.</p> Signup and view all the answers

    Which of the following statements about PaaS is correct?

    <p>PaaS is designed to support the web application lifecycle.</p> Signup and view all the answers

    How does public cloud computing enhance redundancy?

    <p>By operating multiple data centers across different locations.</p> Signup and view all the answers

    What is a common issue faced with public cloud computing?

    <p>Inadequate data security.</p> Signup and view all the answers

    What defines the 'elasticity' of cloud services?

    <p>The ability to adjust computing resources as needed.</p> Signup and view all the answers

    Which of the following best describes vendor lock-in?

    <p>The inability to migrate away from a specific provider's service.</p> Signup and view all the answers

    What type of cloud computing environment typically caters to a single organization?

    <p>Private cloud</p> Signup and view all the answers

    Which cloud migration strategy involves modifying the existing application before moving it to the cloud?

    <p>Refactoring</p> Signup and view all the answers

    What is a characteristic of a hybrid cloud computing environment?

    <p>Combines private and public cloud infrastructures</p> Signup and view all the answers

    In which migration strategy would an organization choose to phase out an existing application instead of migrating it?

    <p>Retiring</p> Signup and view all the answers

    Which pricing model allows users to pay for cloud resources only when they are used?

    <p>On-demand Pricing</p> Signup and view all the answers

    What distinguishes a virtual private cloud from a traditional private cloud?

    <p>Utilizes shared resources from the public cloud</p> Signup and view all the answers

    Which type of cloud typically meets the needs of applications that have less sensitive data requirements?

    <p>Hybrid cloud</p> Signup and view all the answers

    What is one common reason organizations adopt a private cloud?

    <p>To ensure better security and data control</p> Signup and view all the answers

    What is a key requirement for the media streaming service during high-traffic events?

    <p>Low-latency streaming globally</p> Signup and view all the answers

    What challenge does the research and development project face during inactive phases?

    <p>Minimizing unnecessary expenses</p> Signup and view all the answers

    Which requirement is essential for ensuring data security in both scenarios described?

    <p>Compliance with regulations</p> Signup and view all the answers

    What is a challenge faced by both the media streaming service and the research and development project?

    <p>Balancing reserved capacity with demand</p> Signup and view all the answers

    Which aspect is emphasized in the requirements of the media streaming service?

    <p>Flexibility to adapt to changing demand</p> Signup and view all the answers

    What is a requirement for both the media streaming service and the research and development project?

    <p>Flexibility to scale resources</p> Signup and view all the answers

    What requirement focuses on minimizing costs during off-peak hours for the media streaming service?

    <p>Cost efficiency</p> Signup and view all the answers

    Which challenge is unique to the research and development project compared to the media streaming service?

    <p>Minimizing costs for idle periods</p> Signup and view all the answers

    Study Notes

    Cloud Computing Overview

    • Virtualization enables users to access desktop OS hosted in cloud on centralized servers.
    • Applications and files can be accessed as if stored on local devices.
    • Cloud computing provides software and storage as internet services, accessible via web browsers.
    • Types of cloud environments include public, private, and hybrid clouds, emphasizing flexibility and scalability.
    • Cloud services are elastic, allowing dynamic scaling of resources with payment based on actual usage.
    • Pooled resources mean multiple organizations share the same physical hardware, enhancing cost efficiency.

    Reasons for Cloud Adoption

    • Costs are lower with minimal capital required for setup.
    • Offers faster development opportunities and improved access to resources.
    • Enables ubiquitous access and consistent cost structure.
    • Facilitates focus on core business instead of infrastructure management.
    • Potential downsides include vendor dependency.

    Public Cloud Computing

    • Operated by service providers who manage infrastructure while users access shared resources.
    • Benefits include reduced costs, flexible computing capacity, and increased redundancy across multiple data centers.

    Types of Cloud Services

    • Infrastructure as a Service (IaaS): Outsourced equipment for data processing (e.g., Amazon EC2).
    • Platform as a Service (PaaS): Computing platforms for developing applications (e.g., Microsoft Azure).
    • Software as a Service (SaaS): Remote access to software applications through the web (e.g., Salesforce.com).

    Challenges with Public Cloud Computing

    • Complexity in pricing and migration processes.
    • Variability in performance and security issues.
    • Risk of vendor lock-in and reliance on third-party services.

    Private Cloud Computing

    • A single-tenant cloud environment focused on security for sensitive data.
    • Can be implemented on-premises or managed by service providers (virtual private cloud).

    Hybrid Cloud Computing

    • Combines public and private cloud features, allowing businesses to tailor environments based on security needs and resource requirements.
    • Organizations leverage public clouds for scalable applications while maintaining private clouds for sensitive operations.

    Cloud Migration Strategies

    • Various approaches to migrating applications to the cloud, known as the six R's:
      • Retire, Rehost, Replatform, Repurchase, Refactor, Retain.

    Cloud Pricing Models

    • Structures include on-demand pricing, reserved instances, spot instances, and savings plans, each catering to different business needs.

    Industry Application Examples

    • E-commerce Startup: Requires scalability for fluctuating traffic, balancing costs during off-peak hours while maintaining performance.
    • Healthcare Application: Needs strong data security and compliance for sensitive patient information with predictable performance costs.
    • Media Streaming Service: Aims for low-latency streaming while handling unpredictable demand spikes effectively.
    • Research and Development Project: Focuses on high-performance computing during extensive data analysis phases while minimizing costs during idle periods.

    Assignment Guidelines

    • Analyze a chosen cloud service provider, detailing their services.
    • List major components in the service level agreement (SLA).
    • Provide examples of clients and services utilized.
    • Outline customer migration support offered by the provider.

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    Description

    This quiz explores the fundamentals of cloud computing, including key concepts such as virtualization, types of cloud environments, and reasons for cloud adoption. Understand how cloud services provide flexibility and scalability, while also discussing the potential downsides of vendor dependency. Test your knowledge of public, private, and hybrid clouds, as well as the cost benefits associated with cloud solutions.

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