Sandboxing and Virtualization in Application Development
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Questions and Answers

What is a key benefit of virtualization technology mentioned in the text?

  • Using different CPUs for each operating system
  • Having each operating system believe it has exclusive hardware resources (correct)
  • Running only one operating system at a time
  • Running virtual machines on separate physical servers

    • Where can some virtualization software run according to the text?

  • On IBM mainframes
  • Exclusively on macOS desktops
  • On a standalone server (correct)
  • Only in the cloud

    • What is an example of using virtualization for running legacy software mentioned in the text?

  • Using separate CPUs for each operating system
  • Running the latest operating system on a desktop
  • Running Windows 10 and Windows 11 on separate virtual machines (correct)
  • Running macOS and Windows 11 simultaneously

    • Where is virtualization technology not new according to the text?

    <p>IBM mainframes in the '60s</p> Signup and view all the answers

    What is the recommended approach when it comes to virtual machines?

    <p>Building your own rather than using VMs from third-party sources</p> Signup and view all the answers

    What does a shared network address do for a virtual machine?

    <p>Gives it the same IP address as the physical host</p> Signup and view all the answers

    How does a bridged network address differ from a shared network address?

    <p>It provides a unique IP address for each VM</p> Signup and view all the answers

    What happens when you configure a private address for a virtual machine?

    <p>Remains isolated within the local virtualized environment</p> Signup and view all the answers

    How does obtaining an IP address for a virtual machine in a bridged network setting compare to a physical device?

    <p>Virtual machines receive unique IPs, just like physical devices on the network</p> Signup and view all the answers

    What is a reason given in the text for avoiding using third-party virtual machines?

    <p>They may contain malware</p> Signup and view all the answers

    What is a hypervisor in the context of virtualization?

    <p>A software that manages memory, storage, CPU, and networking between virtual machines</p> Signup and view all the answers

    What role does a hypervisor play in running multiple operating systems on a single desktop?

    <p>It allows for seamless movement between different operating systems without rebooting</p> Signup and view all the answers

    Which feature of CPUs is utilized by hypervisor software?

    <p>Hardware-based virtualization technology</p> Signup and view all the answers

    What is a common requirement for CPUs to be compatible with hypervisor software?

    <p>Hardware-based virtualization support</p> Signup and view all the answers

    How does virtualization help in running different operating systems on a single desktop?

    <p>By allowing operating systems to share the same hardware resources</p> Signup and view all the answers

    Which component manages memory, storage, and CPU resources across different virtual machines?

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

    Why is having sufficient RAM important when planning to run multiple virtual machines?

    <p>To accommodate the memory requirements of each operating system</p> Signup and view all the answers

    Which technology in Intel CPUs is crucial for enabling efficient virtualization?

    <p>'Virtualization Technology' (VT)</p> Signup and view all the answers

    What is one advantage of using a hypervisor to run multiple operating systems compared to separate physical devices?

    <p>Reduced cost and space requirements</p> Signup and view all the answers

    What is the primary purpose of a hypervisor software in the context of virtualization?

    <p>To manage resources and communication between different virtual machines</p> Signup and view all the answers

    How does a hypervisor help in utilizing a single desktop for multiple operating systems?

    <p>By enabling seamless navigation between different OSs without rebooting</p> Signup and view all the answers

    What role does the hypervisor play in ensuring compatibility with different CPU types?

    <p>It leverages hardware-based virtualization features present in CPUs</p> Signup and view all the answers

    What is the main benefit of using virtual machines in application development, as discussed in the text?

    <p>Allows developers to test code without affecting production systems</p> Signup and view all the answers

    How does utilizing a virtual machine during coding help developers?

    <p>Allows developers to experiment safely with code changes</p> Signup and view all the answers

    What is a major concern related to running multiple virtual environments on a single physical device?

    <p>Potential corruption of the hypervisor by malware</p> Signup and view all the answers

    Why do IT security professionals need to be cautious about VM escaping?

    <p>To avoid unauthorized access to multiple virtualized systems</p> Signup and view all the answers

    What could happen if malware successfully performs a VM escape?

    <p>The malware can spread to other virtual systems on the same hypervisor</p> Signup and view all the answers

    Study Notes

    • Virtualization technology enables running multiple operating systems on a single desktop at once, sharing the same hardware.
    • This technology was first used with IBM mainframes in the 1960s and has been adapted for PC environments.
    • Runs on desktops (macOS with virtualized operating systems) or in data centers (each virtual machine having its own CPU, memory, and storage).
    • Useful for running legacy software on older operating systems while having the latest OS on the desktop.
    • Helps save time, resources, and money by using a single physical device for multiple operating systems.
    • Hypervisor is the software managing resources between multiple virtual machines, often utilizing hardware-based virtualization capabilities in CPUs.
    • Virtualization supports running multiple versions of operating systems simultaneously on a single desktop, such as macOS, Windows 10 Pro, and Windows 11 Pro.
    • VM snapshots enable taking a snapshot of one VM configuration and returning to the original configuration if needed.
    • Sandboxing in virtualization provides an isolated testing environment for developers, allowing them to test without affecting production systems.
    • Concerns in virtualization include VM escaping, where malware gains access to the hypervisor and potentially other virtualized systems.
    • Provide the same security controls for virtual machines as for traditional physical devices, such as installing firewalls, antivirus software, etc.
    • Be cautious when downloading virtual machines from third-party sources to avoid potential malware.
    • Networking configuration varies between virtual machines, with options such as shared network addresses and private IP addresses with network address translation.

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    Description

    Explore the concept of sandboxing and virtualization within the context of application development. Learn how developers can benefit from isolated testing environments using virtual machines (VMs) for building applications.

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