305-300模擬対策、305-300試験参考書私たちは、CertJukenのLpiの305-300問題集を使ったら、初めて認定試験を受ける君でも一回で試験に合格することができるということを保証します。もし認定試験に失敗したら、或いは学習教材は問題があれば、私たちは全額返金することを保証いたします。そして、CertJukenのLpiの305-300問題集を購入したら、私たちは一年間で無料更新サービスを提供することができます。 Lpi LPIC-3 Exam 305: Virtualization and Containerization 認定 305-300 試験問題 (Q70-Q75):質問 # 70
Which of the following commands lists all differences between the disk images vm1-snap.img and vm1.img?
A. virt-history -a vm1-snap.img -A vm1.img
B. virt-delta -a vm1-snap.img -A vm1.img
C. virt-cp-in -a vm1-snap.img -A vm1.img
D. virt-cmp -a vm1-snap.img -A vm1.img
E. virt-diff -a vm1-snap.img -A vm1.img
正解：E
質問 # 71
Which of the following statements are true of full virtualization? (Select THREE correct answers)
A. Full virtualization requires time and system resources for emulation
B. Full virtualization is faster than paravirtualization
C. Full virtualization works through CPU emulation
D. Full virtualization requires no modification to the Guest OS kernel
E. Full virtualization has superior I/O performance through emulated device drivers
正解：A、C、D
解説：
Full virtualization allowsunmodified guest operating systemsto run in virtual machines, making statementB correct. The hypervisor presents a complete hardware abstraction to the guest OS.
Historically and conceptually, full virtualization relies onCPU emulation or hardware-assisted virtualization, making statementCcorrect. Even with hardware extensions, some degree of emulation is involved.
Full virtualization alsorequires additional system resources and processing timeto emulate hardware and manage isolation, making statementEcorrect.
Statement A is incorrect because paravirtualization often offers better performance. Statement D is incorrect because emulated I/O devices generally perform worse than paravirtualized drivers.
Therefore, the correct answers areB, C, and E.
質問 # 72
After setting up a data container using the following command:
docker create -v /data --name datastore debian /bin/true
how is an additional new container started which shares the/datavolume with the datastore container?
A. docker run -v /data --name service debian bash
B. docker run --share-with datastore --name service debian bash
C. docker run --volumes-from datastore --name service debian bash
D. docker run --volume-backend datastore -v /data --name service debian bash
E. docker run -v datastore:/data --name service debian bash
正解：C
解説：
The correct way to start a new container that shares the /data volume with the datastore container is to use the
--volumes-from flag. This flag mounts all the defined volumes from the referenced containers. In this case, the datastore container has a volume named /data, which is mounted in the service container at the same path.
The other options are incorrect because they either use invalid flags, such as --share-with or --volume- backend, or they create new volumes instead of sharing the existing one, such as -v datastore:/data or -v /data.
References:
* Docker Docs - Volumes
* Stack Overflow - How to map volume paths using Docker's --volumes-from?
* Docker Docs - docker run
質問 # 73
Which of the following statements are true about sparse images in the context of virtual machine storage?
(Choose two.)
A. Sparse images can only be used in conjunction with paravirtualization.
B. Sparse images are automatically resized when their maximum capacity is about to be exceeded.
C. Sparse images allocate backend storage at the first usage of a block.
D. Sparse images are automatically shrunk when files within the image are deleted.
E. Sparse images may consume an amount of space different from their nominal size.
正解：C、E
解説：
Sparse images are a type of virtual disk images that grow in size as data is written to them, but do not shrink when data is deleted from them. Sparse images may consume an amount of space different from their nominal size, which is the maximum size that the image can grow to. For example, a sparse image with a nominal size of 100 GB may only take up 20 GB of physical storage if only 20 GB of data is written to it. Sparse images allocate backend storage at the first usage of a block, which means that the physical storage is only used when the virtual machine actually writes data to a block. This can save storage space and improve performance, as the image does not need to be pre-allocated or zeroed out.
Sparse images are not automatically shrunk when files within the image are deleted, because the virtual machine does not inform the host system about the freed blocks. To reclaim the unused space, a special tool such as virt-sparsify1 or qemu-img2 must be used to compact the image. Sparse images can be used with both full virtualization and paravirtualization, as the type of virtualization does not affect the format of the disk image. Sparse images are not automatically resized when their maximum capacity is about to be exceeded, because this would require changing the partition table and the filesystem of the image, which is not a trivial task. To resize a sparse image, a tool such as virt-resize3 or qemu-img2 must be used to increase the nominal size and the filesystem size of the image. References: 1 (search for "virt-sparsify"), 2 (search for "qemu- img"), 3 (search for "virt-resize").
質問 # 74
FILL BLANK
What command is used to run a process in a new Linux namespace? (Specify ONLY the command without any path or parameters.) 正解：
解説：
unshare
Explanation
The unshare command is used to run a process in a new Linux namespace12. It takes one or more flags to specify which namespaces to create or unshare from the parent process1. For example, to run a shell in a new mount, network, and PID namespace, one can use:
unshare -mnp /bin/bash
References:
* 1: unshare(1) - Linux manual page - man7.org
* 2: A gentle introduction to namespaces in Linux - Packagecloud
P.S.CertJukenがGoogle Driveで共有している無料の2026 Lpi 305-300ダンプ：https://drive.google.com/open?id=1jrasrEZCau_QuRUS1e0SOJe5eyaiAOz8 Author: maxtayl790 Time: yesterday 04:13
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