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Lpi LPIC-3 Exam 305: Virtualization and Containerization Sample Questions (Q55-Q60):

NEW QUESTION # 55
Which of the following statements are true regarding a Pod in Kubernetes? (Choose two.)

A. Pods are always created automatically and cannot be explicitly configured.
B. A Pod is the smallest unit of workload Kubernetes can run.
C. All containers of a Pod run on the same node.
D. systemd is used to manage individual Pods on the Kubernetes nodes.
E. When a Pod fails, Kubernetes restarts the Pod on another node by default.

Answer: B,C

NEW QUESTION # 56
Which of the following kinds of data cancloud-initprocess directly from user-data? (Choose three.)

A. ISO images to boot from
B. Shell scripts to execute
C. Lists of URLs to import
D. cloud-config declarations in YAML
E. Base64-encoded binary files to execute

Answer: B,C,D

NEW QUESTION # 57
Which statement is true regarding the Linux kernel module that must be loaded in order to use QEMU with hardware virtualization extensions?

A. It must be loaded into the Kernel of the host system in order to use the visualization extensions of the host system's CPU
B. It must be loaded into the kernel of each virtual machine that will access files and directories from the host system's file system.
C. It must be loaded into the kernel of each virtual machine to provide Para virtualization which is required by QEMU.
D. It must be loaded into the kernel of the first virtual machine as it interacts with the QEMU bare metal hypervisor and is required to trigger the start of additional virtual machines
E. It must be loaded into the kernel of the host system only if the console of a virtual machine will be connected to a physical console of the host system

Answer: A

Explanation:
Explanation
The Linux kernel module that must be loaded in order to use QEMU with hardware virtualization extensions is KVM (Kernel-based Virtual Machine). KVM is a full virtualization solution that allows a user space program (such as QEMU) to utilize the hardware virtualization features of various processors (such as Intel VT or AMD-V). KVM consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko or kvm-amd.ko. KVM must be loaded into the kernel of the host system in order to use the virtualization extensions of the host system's CPU. This enables QEMU to run multiple virtual machines with unmodified Linux or Windows images, each with private virtualized hardware. KVM is integrated with QEMU, so there is no need to load it into the kernel of each virtual machine or the first virtual machine. KVM also does not require paravirtualization, which is a technique that modifies the guest operating system to communicate directly with the hypervisor, bypassing the emulation layer. References:
* Features/KVM - QEMU
* Kernel-based Virtual Machine
* KVM virtualization on Red Hat Enterprise Linux 8 (2023)

NEW QUESTION # 58
Which of the following tasks are part of a hypervisor's responsibility? (Choose two.)

A. Map the resources of virtual machines to the resources of the host system.
B. Create filesystems during the installation of new virtual machine quest operating systems.
C. Isolate the virtual machines and prevent unauthorized access to resources of other virtual machines.
D. Manage authentication to network services running inside a virtual machine.
E. Provide host-wide unique PIDs to the processes running inside the virtual machines in order to ease inter-process communication between virtual machines.

Answer: A,C

Explanation:
Explanation
A hypervisor is a software that creates and runs virtual machines (VMs) by separating the operating system and resources from the physical hardware. One of the main tasks of a hypervisor is to map the resources of VMs to the resources of the host system, such as CPU, memory, disk, and network. This allows the hypervisor to allocate and manage the resources among multiple VMs and ensure that they run efficiently and independently123. Another important task of a hypervisor is to isolate the VMs and prevent unauthorized access to resources of other VMs. This ensures the security and privacy of the VMs and their data, as well as the stability and performance of the host system. The hypervisor can use various techniques to isolate the VMs, such as virtual LANs, firewalls, encryption, and access control145.
The other tasks listed are not part of a hypervisor's responsibility, but rather of the guest operating system or the application running inside the VM. A hypervisor does not create filesystems during the installation of new VMs, as this is done by the installer of the guest operating system6. A hypervisor does not provide host-wide unique PIDs to the processes running inside the VMs, as this is done by the kernel of the guest operating system7. A hypervisor does not manage authentication to network services running inside a VM, as this is done by the network service itself or by a directory service such as LDAP or Active Directory8. References: 1 (search for "What is a hypervisor?"), 2 (search for "How does a hypervisor work?"), 3 (search for "The hypervisor gives each virtual machine the resources that have been allocated"), 4 (search for "Benefits ofhypervisors"), 5 (search for "Isolate the virtual machines and prevent unauthorized access"), 6 (search for "Create filesystems during the installation of new virtual machine quest operating systems"), 7 (search for "Provide host-wide unique PIDs to the processes running inside the virtual machines"), 8 (search for "Manage authentication to network services running inside a virtual machine").

NEW QUESTION # 59
Which of the following statements are true about container-based virtualization? (Choose two.)

A. Container-based virtualization relies on hardware support from the host system's CPU.
B. Different containers may use different distributions of the same operating system.
C. All containers run within the operating system kernel of the host system.
D. Linux does not support container-based virtualization because of missingkernel APIs.
E. Each container runs its own operating system kernel.

Answer: B,C

NEW QUESTION # 60
......

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