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| Certification Vendor: | Linux Professional Institute (LPI) |
|---|---|
| Exam Name: | LPIC-3 Exam 305: Virtualization and Containerization |
| Exam Number: | 305-300 |
| Certificate Validity Period: | 5 years |
| Exam Format: | Multiple choice, Fill-in-the-blank |
| Real Exam Qty: | 60 |
| Exam Duration: | 90 minutes |
| Passing Score: | 500 (scaled score, range 200-800) |
| Related Certifications: | LPIC-3 Mixed Environments LPIC-2 LPIC-3 Security LPIC-3 High Availability and Storage Clusters |
| Exam Price: | $200 USD |
| Available Languages: | Japanese, English |
| Recommended Training: | LPI Official Training Resources |
| Exam Registration: | LPI Official Registration Pearson VUE |
| Sample Questions: | Lpi 305-300 Sample Questions |
| Exam Way: | Online proctored (OnVUE) or at Pearson VUE test centers |
| Pre Condition: | Must hold an active LPIC-2 certification |
| Official Syllabus URL: | https://www.lpi.org/our-certifications/exam-305-objectives/ |
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질문 # 40
FILL BLANK
What is the default path to the Docker daemon configuration file on Linux? (Specify the full name of the file,Including path.)
정답：
설명：
/etc/docker/daemon.json
Explanation
The default path to the Docker daemon configuration file on Linux is /etc/docker/daemon.json. This file is a JSON file that contains the settings and options for the Docker daemon, which is the service that runs on the host operating system and manages the containers, images, networks, and other Docker resources. The
/etc/docker/daemon.json file does not exist by default, but it can be created by the user to customize the Docker daemon behavior. The file can also be specified by using the --config-file flag when starting the Docker daemon. The file must be a valid JSON object and follow the syntax and structure of the dockerd reference docs12. References:
* Docker daemon configuration file - Medium3
* Docker daemon configuration overview | Docker Docs4
* docker daemon | Docker Docs5
질문 # 41
Which of the following types of guest systems does Xen support? (Choose two.)
정답：D,E
설명：
Xen supports two types of guest systems: paravirtualized guests (PV) and fully virtualized guests (HVM).
* Paravirtualized guests (PV) are guests that have been modified to run on the Xen hypervisor. They use a special kernel that communicates with the hypervisor through hypercalls, and use paravirtualized drivers for I/O devices. PV guests can run faster and more efficiently than HVM guests, but they require the guest operating system to be ported to Xen and to support the Xen ABI12.
* Fully virtualized guests (HVM) are guests that run unmodified operating systems on the Xen hypervisor. They use hardware virtualization extensions, such as Intel VT-x or AMD-V, to create a virtual platform for the guest. HVM guests can run any operating system that supports the hardware architecture, but they incur more overhead and performance penalties than PV guests. HVM guests can also use paravirtualized drivers for I/O devices to improve their performance12.
The other options are not correct. Xen does not support foreign architecture guests (FA), emulated guests, or container virtualized guests.
* Foreign architecture guests (FA) are guests that run on a different hardware architecture than the host.
For example, running an ARM guest on an x86 host. Xen does not support this type of virtualization, as it would require emulation or binary translation, which are very complex and slow techniques3.
* Emulated guests are guests that run on a software emulator that mimics the hardware of the host or another platform. For example, running a Windows guest on a QEMU emulator. Xen does not support this type of virtualization, as it relies on the emulator to provide the virtual platform, not the hypervisor. Xen can use QEMU to emulate some devices for HVM guests, but not the entire platform14.
* Container virtualized guests are guests that run on a shared kernel with the host and other guests, using namespaces and cgroups to isolate them. For example, running a Linux guest on a Docker container. Xen does not support this type of virtualization, as it requires the guest operating system to be compatible with the host kernel, and does not provide the same level of isolation and security as hypervisor-based virtualization56.
:
Xen Project Software Overview - Xen
Xen ARM with Virtualization Extensions - Xen
Xen Project Beginners Guide - Xen
QEMU - Xen
Docker overview | Docker Documentation
What is a Container? | App Containerization | VMware
질문 # 42
What does LXC stand for?
정답：C
설명：
LXCstands forLinux Containers, a lightweight virtualization technology that enables multiple isolated Linux systems (containers) to run on a single Linux host. Virtualization and containerization documentation describes LXC as acontainer-based virtualization solutionthat uses Linux kernel features such as namespaces, control groups (cgroups), and capabilitiesto provide process isolation without requiring a full hypervisor.
Unlike traditional virtual machines, LXC containers share the host kernel, which significantly reduces overhead and improves performance. Each container behaves like an independent Linux system with its own process tree, network interfaces, and filesystem, while still relying on the host kernel for execution.
LXC is often referred to as"system containers", as it allows running full Linux distributions inside containers, unlike application-focused containers such as Docker. It serves as the foundation for higher-level container platforms, includingLXD, which provides enhanced management features and APIs.
The other options are incorrect because they do not align with established Linux container terminology.
Official Linux container documentation consistently defines LXC asLinux Containers, making optionBthe correct answer.
질문 # 43
Which command within virsh lists the virtual machines that are running on the current host?
정답：D
설명：
The command virsh list is used to list all running domains (VMs) on the current host. The command virsh list
--all can be used to list both active and inactive domains. The other options are not valid virsh commands. The command virsh list is a basic command that lists all running domains (VMs). You can also list all configured VMs by adding the --all option. This is useful if you want to see all VMs configured in the target hypervisor that you can use on subsequent commands1. References:
* 1: 8 Linux virsh subcommands for managing VMs on the command line | Enable Sysadmin.
질문 # 44
Which command within virsh lists the virtual machines that are running on the current host?
정답：D
설명：
Explanation
The command virsh list is used to list all running domains (VMs) on the current host. The command virsh list
--all can be used to list both active and inactive domains. The other options are not valid virsh commands. The command virsh list is a basic command that lists all running domains (VMs). You can also list all configured VMs by adding the --all option. This is useful if you want to see all VMs configured in the target hypervisor that you can use on subsequent commands1. References:
* 1: 8 Linux virsh subcommands for managing VMs on the command line | Enable Sysadmin.
질문 # 45
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