Networking Fundamentals: DNS and Virtualization
14 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Who is responsible for the security of deployed applications and data in a cloud infrastructure?

  • The cloud provider
  • The company owning the applications and data (correct)
  • The general public
  • A third-party security service

    • What is the primary characteristic of a public cloud infrastructure?

  • It is used exclusively by a specific group of organizations
  • It is a combination of two or more deployment models
  • It is owned and managed by a single organization
  • It is open to use by the general public (correct)

    • What is a common feature of a hybrid cloud infrastructure?

  • It is used exclusively by a specific group of organizations
  • It is open to use by the general public
  • It is owned and managed by a single organization
  • It enables data and application portability (correct)

    • What is the primary characteristic of a private cloud infrastructure?

    <p>It is used exclusively by a single organization</p> Signup and view all the answers

    What is the primary characteristic of a community cloud infrastructure?

    <p>It is used exclusively by a specific group of organizations</p> Signup and view all the answers

    What determines the ownership and management of a private cloud infrastructure?

    <p>The organization or a third party (or a combination of both)</p> Signup and view all the answers

    What is the primary function of the Domain Name System (DNS)?

    <p>To provide a distributed lookup table of hostname to IP address</p> Signup and view all the answers

    What is the main difference between Virtualization and Dual Boot?

    <p>Virtualization runs multiple OS at the same time, while Dual Boot runs only one OS at a time</p> Signup and view all the answers

    What is a benefit of Virtualization in terms of hardware?

    <p>Legacy hardware is still supported</p> Signup and view all the answers

    What is the value of cloud computing in terms of scalability?

    <p>It is elastic enough to scale with the needs of your organization</p> Signup and view all the answers

    What is an example of Software as a Service (SaaS) in cloud computing?

    <p>A customer using an application running on a cloud infrastructure</p> Signup and view all the answers

    What is the key difference between Platform as a Service (PaaS) and Infrastructure as a Service (IaaS)?

    <p>PaaS provides access to applications, while IaaS provides access to infrastructure</p> Signup and view all the answers

    Who is responsible for the security of applications and data in Infrastructure as a Service (IaaS)?

    <p>The customer</p> Signup and view all the answers

    What is a key benefit of cloud computing in terms of cost?

    <p>Cost savings due to economies of scale and reduced infrastructure needs</p> Signup and view all the answers

    Study Notes

    Domain Name System (DNS)

    • A distributed lookup table of hostname to IP address
    • Used by large-scale systems like Facebook and Google
    • Characteristics:
      • Massive scale
      • Fast enough
      • Very reliable
    • Used in email servers (SMTP)

    Virtualization

    • A technology that runs multiple same or different operating systems on a single machine
    • Each operating system is completely isolated from others
    • Example: running both Windows and Linux on the same machine
    • Benefits:
      • Consolidation
      • Redundancy
      • Legacy hardware
      • Migration
      • Centralized management
    • Difference from Dual Boot: Virtualization runs multiple OS at the same time, while Dual Boot runs only one OS at a time

    Cloud Computing

    • A pool of resources that can be rapidly provisioned in an automated, on-demand manner
    • Values:
      • Economies of scale
      • Elastic enough to scale with the needs of an organization
      • Cost and operational benefits
      • Easily accessed by users regardless of location
    • Service models:
      • Software as a Service (SaaS): customers provided access to an application running on a cloud infrastructure
      • Platform as a Service (PaaS): customers can deploy supported applications onto the provider’s cloud infrastructure
      • Infrastructure as a Service (IaaS): customers can provision processing, storage, networks, and other computing resources

    Cloud Deployment Models

    • Public: open to use by the general public, owned, managed, and operated by a third party
    • Community: used exclusively by a specific group of organizations
    • Private: used exclusively by a single organization, may be owned, managed, and operated by the organization or a third party
    • Hybrid: comprises two or more of the aforementioned deployment models, bound by standardized or proprietary technology that enables data and application portability

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    This quiz covers the basics of DNS, a distributed system that maps hostnames to IP addresses, and virtualization, a technology that allows running multiple operating systems on a single machine.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser