1100 Ch09: Cloud-Based Applications Overview
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Questions and Answers

What does Software as a Service (SaaS) primarily provide to users?

  • Access to spreadsheet and word processing tools over the Internet (correct)
  • Network management tools for cloud hosting
  • Infrastructure for building applications
  • Storage solutions for data management

    • What technology allows organizations to deploy entire desktop environments from a server?

  • Software as a Service (SaaS)
  • Cloud File Storage
  • Virtual Private Network (VPN)
  • Virtual Desktop Infrastructure (VDI) (correct)

    • Which of the following is NOT an example of cloud-based email applications?

  • Outlook
  • iCloud Mail
  • Salesforce (correct)
  • Gmail

    • What is the main characteristic of a persistent Virtual Desktop Infrastructure (VDI)?

    <p>It provides a customizable image saved for future use</p> Signup and view all the answers

    Which of the following represents a benefit of using SaaS applications?

    <p>Minimal upfront costs and immediate application availability</p> Signup and view all the answers

    How do cloud storage solutions typically work?

    <p>They allow users to synchronize files across different devices</p> Signup and view all the answers

    Which cloud computing service category is primarily focused on allowing users to build and manage applications?

    <p>Platform as a Service (PaaS)</p> Signup and view all the answers

    What is the main function of the SDN controller?

    <p>To control the application and infrastructure layers</p> Signup and view all the answers

    Which API is responsible for communication between the SDN controller and the application layer?

    <p>Northbound API</p> Signup and view all the answers

    How does SD-WAN benefit organizational network architecture?

    <p>By simplifying it to a single orchestrated layer</p> Signup and view all the answers

    What is the primary advantage of virtualization over dedicated servers?

    <p>Better resource usage and reduced costs</p> Signup and view all the answers

    What distinguishes cloud computing from virtualization?

    <p>Cloud computing separates applications from hardware</p> Signup and view all the answers

    Which security features are commonly included in SD-WAN solutions?

    <p>Integrated security features such as encryption and sandboxing</p> Signup and view all the answers

    What is a limitation of traditional dedicated servers?

    <p>They can remain idle and are a single point of failure</p> Signup and view all the answers

    What is one of the key benefits of cloud computing for users?

    <p>On-demand delivery of computer services</p> Signup and view all the answers

    How do automated processes benefit organizations using SD-WAN?

    <p>They help in monitoring and maintaining the network more effectively</p> Signup and view all the answers

    What type of service model provides access to operating systems and development tools for developers?

    <p>Platform as a Service (PaaS)</p> Signup and view all the answers

    Which of the following is typically used by end users for applications delivered over the network?

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

    Which characteristic describes Infrastructure as a Service (IaaS)?

    <p>Gives access to virtualized computing resources and storage.</p> Signup and view all the answers

    What is a primary benefit of using IT as a Service (ITaaS)?

    <p>Reduces the need for capital investment in IT.</p> Signup and view all the answers

    In the Software-defined Networking (SDN) model, what is located at the top layer?

    <p>Application layer</p> Signup and view all the answers

    What purpose does the control layer serve in the SDN model?

    <p>Decides how to switch traffic.</p> Signup and view all the answers

    Which of the following describes the management role of IaaS providers?

    <p>They manage the underlying infrastructure and network.</p> Signup and view all the answers

    Which of the following is NOT a feature of Platform as a Service (PaaS)?

    <p>Direct user-facing applications.</p> Signup and view all the answers

    What advantage does IaaS offer to organizations in terms of resource management?

    <p>Eliminates single points of failure through redundancy.</p> Signup and view all the answers

    Study Notes

    Cloud-Based Applications

    • Organizations use cloud-based applications to provide on-demand software delivery.
    • Examples include Microsoft Office 365 for online versions of Word, Excel, and PowerPoint.
    • Minimal application code is sent initially, with additional code pulled from the cloud as needed.
    • Applications can be saved locally for offline use.

    Cloud-Based Email

    • Cloud-based solutions are employed for corporate email.
    • Examples include Office 365, Gmail, iCloud Mail, Outlook, Yahoo, and Exchange Online.

    Cloud File Storage Solutions

    • Cloud-based storage is used for corporate data.
    • Examples include Google Drive, OneDrive, iCloud Drive, Box, and Dropbox.
    • Synchronization applications are often used for data consistency.

    Virtual Desktop Infrastructure (VDI)

    • Allows organizations to deploy entire desktop environments from a data center to clients.
    • Virtual desktops are created using a virtual machine (VM) managed by a hypervisor.
    • All computing for VDI happens on servers.
    • VDI can be persistent, retaining user customizations, or non-persistent, reverting to the initial state upon logout.

    Windows Virtual Desktop

    • A virtual desktop edition of Windows 10 that runs on computers or remotely on Azure virtual machines.
    • Provides a virtualized Windows 10 experience that is always up-to-date and accessible across devices.

    Cloud Computing Service Categories (NIST)

    • Software as a Service (SaaS): Cloud provider offers services like email, calendar, communication, and office tools over the internet on a subscription basis.
    • Platform as a Service (PaaS): Cloud provider provides operating systems, development tools, programming languages, and libraries for application development and delivery.
    • Infrastructure as a Service (IaaS): Cloud provider manages the network and offers access to network equipment, virtualized services, storage, software, and supporting infrastructure.

    IT as a Service (ITaaS)

    • An extension of IaaS, offering IT capabilities on-demand without infrastructure investment, personnel training, or licensing.

    Elasticity in the Cloud

    • Services must be provisioned and deprovisioned rapidly, using scripting for efficiency.
    • Software-defined networking (SDN) is frequently employed in this process.

    SDN Model

    • Application layer: Manages traffic prioritization and routing decisions.
    • Control layer: The SDN controller, centralizing control over application and infrastructure layers.
    • Infrastructure layer: Physical and virtual devices handling traffic routing and switching.

    SDN Components

    • The northbound API connects the SDN controller to the application layer.
    • The southbound API connects the SDN controller to the infrastructure layer.

    SD-WAN

    • Simplifies network architecture by orchestrating a single layer instead of multiple physical solutions.
    • Enables better network monitoring and maintenance through virtualization.
    • Offloads work through automation.
    • Includes built-in security features like firewalls, AI-driven solutions, encryption, sandboxing, and IPS.
    • Reduces costs for businesses operating outside traditional locations.
    • Improves consistency and reliability.

    Virtualization vs. Cloud Computing

    • Virtualization: A technology enabling multiple virtual computers to share host hardware.
    • Cloud Computing: A technology that separates applications from hardware.
    • Virtualization is the foundation for cloud computing.

    Traditional Dedicated Servers

    • Inefficient, unreliable, and not scalable.
    • Waste resources by sitting idle.
    • Single points of failure.
    • Can lead to server sprawl.

    Server Virtualization

    • Consolidates virtual servers onto physical servers.
    • Takes advantage of idle resources.
    • Reduces the number of servers needed.
    • Uses a hypervisor to manage computer resources and VMs.
    • Allows each VM to run a separate operating system.
    • Increases resource efficiency, reduces space requirements, lowers costs, and enhances uptime.

    Cloud Computing with Virtualization

    • Provides on-demand delivery of computer services over the internet.
    • Utilizes managed cloud infrastructure (servers, storage, networking) often housed in data centers.
    • Virtualization enables dynamic provisioning of virtual servers.
    • Cloud computing, as widely implemented, would not be possible without virtualization.

    Traditional Server Deployment Challenges

    • Wasted resources: Idle servers waste energy.
    • Single-point of failure: Lack of backup servers for server failures.
    • Server sprawl: Physical space constraints due to underutilized servers.

    Server Virtualization Benefits

    • Resource efficiency: Reduces the number of physical servers needed.
    • Space reduction: Lower physical space requirements.
    • Cost savings: Decreases hardware and energy consumption costs.
    • Increased uptime: Reduces single points of failure.

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    Related Documents

    Virtualization and Cloud Computing PDF

    Description

    This quiz covers various aspects of cloud-based applications, including on-demand software delivery, cloud-based email solutions, and file storage options. Explore how organizations utilize services like Office 365 and Google Drive, and learn about Virtual Desktop Infrastructure (VDI) for seamless desktop environments.

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