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Lpi 305-300 Exam Syllabus Topics:

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

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Lpi LPIC-3 Exam 305: Virtualization and Containerization Sample Questions (Q91-Q96):

NEW QUESTION # 91
Which of the following statements about the commandlxc-checkpointis correct?

Answer: D

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 # 92
Which of the following commands deletes all volumes which are not associated with a container?

Answer: E

Explanation:
Explanation
The command that deletes all volumes which are not associated with a container is docker volume prune. This command removes all unused local volumes, which are those that are not referenced by any containers. By default, it only removes anonymous volumes, which are those that are not given a specific name when they are created. To remove both unused anonymous and named volumes, the --all or -a flag can be added to the command. The command will prompt for confirmation before deleting the volumes, unless the --force or -f flag is used to bypass the prompt. The command will also show the total reclaimed space after deleting the volumes12.
The other commands listed in the question are not valid or do not have the same functionality as docker volume prune. They are either made up, misspelled, or have a different purpose. These commands are:
* docker volume cleanup: This command does not exist in Docker. There is no cleanup subcommand for docker volume.
* docker volume orphan -d: This command does not exist in Docker. There is no orphan subcommand for docker volume, and the -d flag is not a valid option for any docker volume command.
* docker volume vacuum: This command does not exist in Docker. There is no vacuum subcommand for docker volume.
* docker volume garbage-collect: This command does not exist in Docker. There is no garbage-collect subcommand for docker volume.
References:
* docker volume prune | Docker Docs
* How to Remove all Docker Volumes - YallaLabs.


NEW QUESTION # 93
Which of the following KVM parameters is identical to the KVM parameter -hdb file.img?

Answer: D

Explanation:
In QEMU/KVM, the legacy parameter -hdb file.img attaches a disk image as theprimary IDE slave device.
According to QEMU documentation, this corresponds to an IDE device withindex 1, media typedisk, and interfaceIDE.
The modern equivalent using the -drive syntax is:
-drive file=file.img,index=1,media=disk,if=ide
OptionDmatches this mapping precisely. The other options use invalid or unsupported parameter combinations and do not correctly represent the IDE device mapping.
Therefore, the correct answer isD.


NEW QUESTION # 94
Which of the following kinds of data cancloud-initprocess directly from user-data? (Choose three.)

Answer: B,D,E


NEW QUESTION # 95
Which of the following statements is true regarding the following output ofxl list:

Answer: D

Explanation:
The output of xl list shows the state of the domains. The domain with ID 6, Ubuntu, has a state of "b-". This means that the domain is blocked, which means it is idle or waiting for I/O.
https://xenbits.xen.org/docs/unstable/man/xl.1.html


NEW QUESTION # 96
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