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Lpi 305-300 Exam Syllabus Topics:

SectionWeightObjectives
Container Virtualization25%- Container Virtualization Concepts
  • 1. Differences between system containers and application containers
  • 2. Troubleshooting container components using standard Linux tools
  • 3. Concept of container virtualization
  • 4. Linux kernel components: namespaces and cgroups
  • 5. Linux capabilities
- Container Orchestration Platforms
  • 1. Understanding container orchestration importance
  • 2. Kubernetes key concepts
  • 3. Docker Compose
  • 4. Docker Swarm key concepts
- Docker
  • 1. Docker architecture
  • 2. How Docker interacts with the node's Linux system
  • 3. Deploying applications with Docker
  • 4. Manage Docker nodes and Docker containers
  • 5. Managing volumes and networks
  • 6. Building images with Dockerfiles
- LXC
  • 1. LXC/LXD profiles and images
  • 2. Resource limits configuration
  • 3. LXC version 3.0 or higher
  • 4. Use system containers using LXC and LXD
Full Virtualization25%- Virtual Machine Disk Image Management
  • 1. qcow2 vs raw formats
  • 2. qemu-img info, convert, resize operations
  • 3. Manage virtual machines disk images
  • 4. Accessing data stored within an image
  • 5. Converting disk images between formats and hypervisors
  • 6. Backing file chains and snapshot handling
- Libvirt Virtual Machine Management
  • 1. Snapshots and migrations
  • 2. virsh command usage (list, define, undefine, start, stop)
  • 3. virt-install options
  • 4. Manage virtualization hosts and VMs (libvirt domains) using libvirt and related tools
  • 5. Domain XML configuration
  • 6. Virtual networking and storage management
- Xen
  • 1. Xen version 4.x
  • 2. Install, configure, maintain, migrate and troubleshoot Xen installations
  • 3. Domain configuration
  • 4. Xen management tools
- Virtualization Concepts and Theory
  • 1. Device emulation vs paravirtual drivers
  • 2. General concepts, theory and terminology of virtualization
  • 3. Hardware virtualization extensions (VT-x/AMD-V)
  • 4. Xen, QEMU and libvirt terminology
  • 5. Hypervisor architectures
- QEMU
  • 1. QEMU command line tools
  • 2. Install, configure, maintain, migrate and troubleshoot QEMU installations
  • 3. QEMU machine types
  • 4. QEMU networking
VM Deployment and Provisioning10%- Cloud Init
  • 1. Using cloud-init for instance initialization
  • 2. Cloud-init configuration and modules
- Vagrant
  • 1. Provisioning of virtual machines with Vagrant
  • 2. Use Vagrant to manage virtual machines
  • 3. Vagrantfiles and providers
- Cloud Management Tools
  • 1. Common offerings in public clouds
  • 2. Basic feature knowledge of commonly available cloud management tools
- Packer
  • 1. Packer templates and builders
  • 2. Using Packer for automated image building

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Lpi LPIC-3 Exam 305: Virtualization and Containerization Sample Questions (Q32-Q37):

NEW QUESTION # 32
Which of the following statements about the commandlxc-checkpointis correct?

Answer: A

Explanation:
The command lxc-checkpoint is used to checkpoint and restore containers. Checkpointing a container means saving the state of the container, including its memory, processes, file descriptors, and network connections, to a file or a directory. Restoring a container means resuming the container from the saved state, as if it was never stopped. Checkpointing and restoring containers can be useful for various purposes, such as live migration, backup, debugging, or snapshotting. The command lxc-checkpoint has the following syntax:
lxc-checkpoint {-n name} {-D path} [-r] [-s] [-v] [-d] [-F]
The options are:
* -n name: Specify the name of the container to checkpoint or restore.
* -D path: Specify the path to the file or directory where the checkpoint data is dumped or restored.
* -r, --restore: Restore the checkpoint for the container, instead of dumping it. This option is incompatible with -s.
* -s, --stop: Optionally stop the container after dumping. This option is incompatible with -r.
* -v, --verbose: Enable verbose criu logging. Only available when providing -r.
* -d, --daemon: Restore the container in the background (this is the default). Only available when providing -r.
* -F, --foreground: Restore the container in the foreground. Only available when providing -r.
The command lxc-checkpoint uses the CRIU (Checkpoint/Restore In Userspace) tool to perform the checkpoint and restore operations. CRIU is a software that can freeze a running application (or part of it) and checkpoint it to a hard drive as a collection of files. It can then use the files to restore and run the application from the point it was frozen at1.
The other statements about the command lxc-checkpoint are not correct. It does not create a clone or an image of a container, nor does it double the memory consumption of the container. It can work on both running and stopped containers, depending on the options provided. References:
* Linux Containers - LXC - Manpages - lxc-checkpoint.12
* lxc-checkpoint(1) - Linux manual page - man7.org3
* CRIU4


NEW QUESTION # 33
Which virsh subcommand is used to change the CD-ROM image file attached to a virtual machine?

Answer:

Explanation:
change-media
Explanation:
In libvirt-based virtualization environments, thevirsh change-mediasubcommand is used to change the media attached to removable devices such asCD-ROM drives. According to libvirt documentation, this command allows administrators to insert or eject ISO images from a running virtual machine without shutting it down.
This functionality is commonly used during operating system installations or software updates. The change- media command supports both live and persistent changes depending on the options used.
Therefore, the correct and documented answer ischange-media.


NEW QUESTION # 34
Which command was used in Xen 3.x as a predecessor of the xl command?

Answer:

Explanation:
xm
Explanation:
In Xen 3.x, the primary command-line tool used to manage virtual machines wasxm. According to Xen virtualization documentation, xm was part of the original Xen management stack and provided commands to create, start, stop, migrate, and monitor Xen domains.
As Xen evolved, the xm toolstack was deprecated and replaced by thexltoolstack. The xl command interfaces directly with the Xen hypervisor and offers better performance, improved maintainability, and reduced complexity. Modern Xen installations no longer support xm, but it remains historically significant as the predecessor to xl.
Therefore, the correct answer isxm.


NEW QUESTION # 35
Which of the following commands deletes all volumes which are not associated with a container?

Answer: C


NEW QUESTION # 36
FILL BLANK
What command is used to run a process in a new Linux namespace? (Specify ONLY the command without any path or parameters.)

Answer:

Explanation:
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


NEW QUESTION # 37
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