Virtualization in IT Services
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Questions and Answers

What does traditional computing refer to?

The use of physical servers and datacenters to deliver computing and other IT services.

Which of the following are characteristics of traditional computing? (Select all that apply)

  • Multiple virtual machines running on one host
  • Use of an on-premise datacenter (correct)
  • Dedicated physical machine (correct)
  • Computer with a physical hardware (correct)

    • What is virtualization?

    Technology that creates virtual representations of servers/storage/networks and other physical resources.

    What are the properties of virtualization? (Select all that apply)

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

    What does cloud computing provide?

    <p>Delivery of computing resources through the internet.</p> Signup and view all the answers

    Which of the following defines server virtualization?

    <p>Enables multiple operating systems to run on a single physical server</p> Signup and view all the answers

    What is network virtualization?

    <p>Completely reproduces a physical network, allowing applications to run on a virtual network.</p> Signup and view all the answers

    What benefit does desktop virtualization offer to IT organizations?

    <p>Enables efficient and secure desktop management</p> Signup and view all the answers

    What does traditional computing refer to?

    <p>Use of physical servers and datacenters</p> Signup and view all the answers

    Virtualization allows multiple operating systems to run on a single physical server.

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

    What are virtual machines?

    <p>Self-contained, independent software containers with an operating system and applications.</p> Signup and view all the answers

    Virtualization provides ____ independence for the virtual machines.

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

    Which of the following is NOT a characteristic of virtualization?

    <p>Physical deployment of servers</p> Signup and view all the answers

    Cloud computing requires local hardware for scalability.

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

    What is server virtualization?

    <p>Enables multiple operating systems to run on a single physical server.</p> Signup and view all the answers

    Match the following types of virtualization with their descriptions:

    <p>Server Virtualization = Enables multiple OS on a single physical server Network Virtualization = Reproduces a physical network virtually Desktop Virtualization = Delivers managed desktop services Cloud Virtualization = Provides centralized resources via the Internet</p> Signup and view all the answers

    Study Notes

    Traditional Computing

    • Relied on physical servers and data centers for delivering IT services.
    • Used dedicated servers for each application, leading to resource allocation issues and scalability challenges.

    Virtualization

    • Creates virtual representations of physical resources like servers, storage, and networks.
    • Uses software to mimic physical hardware, enabling multiple virtual machines (VMs) to run simultaneously on a single physical machine.
    • Virtual machines are isolated and independent software containers with an OS and applications.

    Properties of Virtualization

    • Partitioning: Divides resources among virtual machines, allowing multiple OS or VMs on one physical machine.
    • Isolation: Isolates faults at the hardware level, reducing dependencies and conflicts.
    • Encapsulation: Enables VMs to be moved and copied as files, improving portability.
    • Hardware Independence: Allows VMs to be provisioned and migrated to any server without reconfigurations.

    Cloud Computing

    • Utilizes multiple servers to deliver computing resources through the internet.
    • Offers centralized access to resources and services via the internet.
    • Employs renting and using computer services, providing scalability and flexibility without the need for local hardware.

    Types of Virtualization

    Server Virtualization

    • Allows multiple OS to run on a single physical server.
    • Partitions a physical server into multiple virtual servers.
    • Benefits:
      • Greater IT efficiency
      • Reduced operating costs
      • Maximized resource utilization
      • Faster workload deployment
      • Increased application performance
      • Higher server availability
      • Elimination of server sprawl and complexity

    Network Virtualization

    • Creates a virtual replica of a physical network, allowing applications to operate as if on a physical network.
    • Provides hardware independence and operational benefits of virtualization.
    • Presents logical networking devices and services to connected workloads:
      • Logical ports
      • Switches
      • Routers
      • Firewalls
      • Load balancers
      • VPNs

    Desktop Virtualization

    • Delivers desktops as a managed service, enabling faster responses to changing workplace needs.
    • Allows virtualized desktops and applications to be delivered to remote locations, outsourced employees, and mobile workers.
    • Categories:
      • Local Desktop Virtualization
      • Remote Desktop Virtualization
    • Provides efficient, secure, and cost-effective desktop management.
    • Types:
      • Desktop as a Service (DaaS): Cloud service delivering virtualized desktops and applications with client-defined, vendor-defined, and managed DaaS options.
      • Virtual Desktop Infrastructure (VDI): Typically deployed on-premises, offering centralized desktop management.

    Traditional Computing

    • Relies on physical servers and data centers to deliver IT services
    • Characterized by dedicated physical servers with a single operating system (OS) installed directly on the hardware
    • Typically runs one or few applications per machine, leading to resource allocation issues and scaling difficulties

    Virtualization

    • Creates virtual representations of physical resources (servers, storage, networks)
    • Virtual software emulates physical hardware to run multiple virtual machines (VMs) simultaneously on a single physical machine
    • VMs are isolated software containers with their own OS and applications
    • Multiple VMs on a single physical server allow for multiple operating systems and applications to run on one machine
    • Key Properties:
      • Partitioning: Divides resources between VMs, enabling multiple OS or VMs on a single physical machine
      • Isolation: Provides fault isolation at the hardware level, minimizing dependencies and conflicts
      • Encapsulation: Allows VMs to be moved and copied as files, enhancing portability
      • Hardware Independence: Enables provisioning and migration to any server without reconfiguration

    Cloud Computing

    • Utilizes multiple servers to deliver computing resources via the internet
    • Offers centralized resource access and scalability, eliminating local hardware dependency

    Types of Virtualization

    • Server Virtualization:
      • Enables multiple operating systems to run on a single physical server
      • Partitions a physical server into multiple virtual servers
      • Benefits:
        • Increased IT efficiencies
        • Reduced operating costs
        • Enhanced resource utilization
        • Faster workload deployment
        • Improved application performance
        • Higher server availability
        • Elimination of server sprawl and complexity
    • Network Virtualization:
      • Replicates a physical network, allowing applications to operate on a virtual network as if they were on a physical network
      • Provides operational benefits and hardware independence by presenting virtual networking devices and services to connected workloads:
        • Logical ports
        • Switches
        • Routers
        • Firewalls
        • Load balancers
        • VPNs
    • Desktop Virtualization:
      • Delivers desktops as a managed service, allowing for faster responses to changing workplace demands
      • Enables quick and easy delivery of virtualized desktops and applications to remote locations, outsourced employees, and mobile workers
      • Categorized as Local Desktop Virtualization or Remote Desktop Virtualization
      • Offers efficient and secure desktop management while reducing desktop hardware costs
      • Types:
        • Desktop as a Service (DaaS): Cloud-based service delivering virtualized desktops and applications (client-defined, vendor-defined, and managed DaaS)
        • Virtual Desktop Infrastructure (VDI): On-premises deployment

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    Related Documents

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    Description

    Explore the fundamental concepts of virtualization and how it transforms traditional computing practices. This quiz covers partitioning, isolation, encapsulation, and the benefits of hardware independence in virtual environments.

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