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Questions and Answers
What does Software as a Service (SaaS) primarily provide to users?
What technology allows organizations to deploy entire desktop environments from a server?
Which of the following is NOT an example of cloud-based email applications?
What is the main characteristic of a persistent Virtual Desktop Infrastructure (VDI)?
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Which of the following represents a benefit of using SaaS applications?
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How do cloud storage solutions typically work?
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Which cloud computing service category is primarily focused on allowing users to build and manage applications?
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What is the main function of the SDN controller?
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Which API is responsible for communication between the SDN controller and the application layer?
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How does SD-WAN benefit organizational network architecture?
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What is the primary advantage of virtualization over dedicated servers?
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What distinguishes cloud computing from virtualization?
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Which security features are commonly included in SD-WAN solutions?
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What is a limitation of traditional dedicated servers?
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What is one of the key benefits of cloud computing for users?
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How do automated processes benefit organizations using SD-WAN?
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What type of service model provides access to operating systems and development tools for developers?
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Which of the following is typically used by end users for applications delivered over the network?
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Which characteristic describes Infrastructure as a Service (IaaS)?
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What is a primary benefit of using IT as a Service (ITaaS)?
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In the Software-defined Networking (SDN) model, what is located at the top layer?
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What purpose does the control layer serve in the SDN model?
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Which of the following describes the management role of IaaS providers?
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Which of the following is NOT a feature of Platform as a Service (PaaS)?
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What advantage does IaaS offer to organizations in terms of resource management?
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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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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.
