6.4.8 Practice Questions
Match each virtualization component on the left with the appropriate description on the right. Each type of component may be used once, more than once, or not at all.
Provides the hardware necessary to create a virtualized environment. >Host machine A thin layer of software that resides between the virtual machine and hardware. >Hypervisor A software implementation of a computer. >Virtual machine A file created to store data. >Virtual hard disk Allows virtual machines to interact with hardware. >Hypervisor Explanation: The following are descriptions of the virtualization components: A host machine provides the hardware necessary to create a viable, virtualized environment. A hypervisor is a thin layer of software that resides between the virtual operating system and the hardware. A hypervisor allows virtual machines to interact with the hardware without going through the host operating system. A virtual machine is a software implementation of a computer that execute programs like a physical machine. A virtual hard disk is a file created within the host operating system that simulates a hard disk for storing data.
Which of the following accurately describes a hypervisor? (Select two.)
Allows virtual machines to interact directly with the hardware. A layer of software that resides between the virtual operating system and the hardware. Explanation: A hypervisor is a thin layer of software that resides between the virtual operating system and the hardware. A hypervisor allows virtual machines to interact with the hardware without going through the host operating system. The hypervisor does not allocate the storage space for a virtual machine, control the number of virtual machines a host can accommodate, or manage access to software programs on the host.
Listen to exam instructions You have been tasked with designing a workstation to run over 20 applications virtually that all use the same operating system. You want to: Minimize the amount of space required for each virtual application. Make sure each application starts quickly (within a few seconds). What virtualization type will BEST meet your application computing requirements?
Container virtualization Explanation: Container virtualization is focused on providing a virtual environment for a single application. A container might only occupy a few megabytes, whereas a virtual machine might take up several gigabytes. That means a single server can host many more containers than virtual machines. Also, a virtual machine may take several minutes to boot, while a containerized application only takes a few seconds to initialize. These meet the requirements for your application workstation. A VDI (virtualization desktop infrastructure) is designed to be the end user's main computer system, which can be accessed from something like a tablet or thin client. In addition, a VDI can be hosted by a cloud service provider. However, it is not the best solution to meet your application needs. A hypervisor is a virtualization component that allows virtual machines to interact with hardware on the host machine. Type 1 runs directly on the host machine's hardware to manage the guest VM. Type 2 runs on an operating system to manage the guest VM. These virtualization types do not determine whether software boots immediately (within seconds) and do not minimize the amount of space required by each application.
What is another name for virtual machines?
Guest operating systems Explanation: With virtualization, you can pool multiple operating systems on the same physical hardware. Each OS runs independently and runs its own set of applications. These independent operating systems are called virtual machines, or VMs. You will also hear them called guest operating systems. A host machine has the hardware necessary to run a virtualized environment with virtual machines. A host machine is not the virtual machine itself. A hypervisor is a thin layer of software that resides between the virtual machine and the hardware. A hypervisor allows virtual machines to interact with the hardware without going through the host operating system. A hypervisor is not the virtual machine itself. Sandboxing is a benefit of using a virtual machine to run tests without impacting the production environment. Sandboxing is not the virtual machine itself.
What are the benefits of installing integration services (IS) on a Hyper-V Windows virtual machine? (Select two.)
Lets you cut and paste between the virtual machine and host. Dramatically improves performance by installing Hyper-V aware drivers. Explanation The following are benefits of installing IS on a Hyper-V Windows virtual machine: >Dramatically improves VM performance by installing (in the VM) modified disk, network, and mouse drivers that are Hyper-V aware. >Lets you cut and paste between the host and guest Windows operating systems installed within VMs. The ability to increase the amount of RAM used by the virtual machine is a fundamental feature of a Hyper-V virtual machine. It is not a feature of IS. Virtual Switch Manager is the Hyper-V utility that allows you to select a NIC if you are configuring an external virtual network. Virtual machine storage space is almost impossible to decrease without destroying the virtual machine. Installing IS does not change that limitation.
You want to create a virtual machine environment in which you can develop and test new software. Which virtualization benefit BEST describes the testing environment that you want to implement?
Sandbox Explanation: Because a virtual machine is easy to delete or create, you can run tests without permanent impact, giving you a playground (or sandbox) to create and test new software. Virtualization can provide access to software running on a different OS from the host machine. This is known as cross-virtualization, but does not describe the advantage of having a testing (or sandbox) environment. Hardware virtualization describes the ability to use your physical hardware efficiently, but does not describe the advantage of having a testing (or sandbox) environment. A hypervisor is a thin layer of software that resides between the virtual operating system (VM) and the hardware (think of it as a type of OS for the host machine). A hypervisor is a component of the virtualization environment, not a benefit of virtualization.
While creating a virtual machine, you decide to set it up to use an external network. What else do you need to do to enable the eternal network configuration?
Select a NIC using the virtual switch manager. Explanation: If you choose an external network configuration, you need to use the virtual switch manager to select a NIC. Matching the RAM on the host and configuring the virtual machine to use RDP are not requirements for enabling an external network configuration. A Type 1 hypervisor acts as an OS on a physical host machine. The type of hypervisor (Type 1 or Type 2) does not impact the external virtual network configuration.
Which of the following factors significantly determine the number of virtual machines that a host can accommodate? (Select two.)
The components installed on host machine. What has been allocated by the network manager. Explanation: The number of virtual machines a host can accommodate depends on the components installed on the host machine and what has already been allocated by the network manager. The number of software applications installed on the host machine, the VHD file you want to use, and the installation of IS have little or no impact on determining the number of virtual machines that a host can accommodate.
You want to create a virtualization environment that runs directly on the host machine's hardware to manage the virtual machines. Which of the following virtualization types should you use?
Type 1 hypervisor Explanation: A hypervisor is a virtualization component that allows virtual machines to interact with hardware on the host machine. Type 1 runs directly on the host machine's hardware to manage the guest VMs. Type 2 runs on an operating system to manage the guest VM(s) and does not run directly on the host machine's hardware. A VDI (virtualization desktop infrastructure) is designed to be the end user's main computer system, which can be accessed from something like a tablet or thin client. In addition, a VDI can be hosted by a cloud service provider. A VDI does not run directly on the host machine's hardware. Container virtualization is focused on providing a virtual environment for a single application and requires a host machine operating system to run.
As the network engineer for a large financial institution, you have been given the responsibility to provide a new financial desktop to the financial advisors in all company branch offices. The requirements for the software desktop include: It must be a virtualization solution. It must be hosted in the cloud by a third party. It must run on a tablet. Which of the following virtualization types BEST meets your desktop software requirements?
VDI Explanation: A VDI (virtualization desktop infrastructure) is designed to be the end user's main computer system, which can be accessed from something like a tablet or thin client. In addition, a VDI can be hosted by a cloud service provider. A hypervisor is a virtualization component that allows virtual machines to interact with hardware on the host machine. Type 1 runs directly on the host machine's hardware to manage the guest VM(s). Type 2 runs on an operating system to manage the guest VM(s). These virtualization types do not determine whether a virtualized software desktop must run on a desktop or be hosted in the cloud. Container virtualization is focused on providing a virtual environment for a single application. In this scenario, you need to have multiple application tools running on a single desktop.
