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Lpi 305-300 Exam Syllabus Topics:

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

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Lpi LPIC-3 Exam 305: Virtualization and Containerization Sample Questions (Q29-Q34):

NEW QUESTION # 29
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 # 30
How does Packer interact with system images?

Answer: E

Explanation:
Packer is a tool that automates the creation of identical machine images for multiple platforms from a single source configuration. Packer works by creating an instance based on a source image, which is a pre-existing image that serves as a starting point. Packer then connects to the instance through a network connection, such as SSH or WinRM, and runs various commands and scripts to install and configure software within the instance. Packer then shuts down the instance and creates a new system image from it, which can be used to launch new instances. Packer supports many platforms, such as AWS, Azure, VMware, Docker, and others.
Packer does not install any software or run any daemon within the target image, nor does it periodically connect to the running instances to re-apply the template. Packer also does not modify the source image directly, but creates a new image from the modified instance. References:
* Packer by HashiCorp
* HashiCorp Packer - Build Automated Machine Images
* Introduction | Packer | HashiCorp Developer


NEW QUESTION # 31
Which of the following statements are true regarding VirtualBox?

Answer: E


NEW QUESTION # 32
Which file in acgroupdirectory contains the list of processes belonging to thiscgroup?

Answer: E


NEW QUESTION # 33
What is the purpose ofcloud-init?

Answer: B

Explanation:
Cloud-init is a tool that processes configurations and runs through five stages during the initial boot of Linux VMs in a cloud. It allows users to customize a Linux VM as it boots for the first time, by applying user data to the instance. User data can include scripts, commands, packages, files, users, groups, SSH keys, and more.
Cloud-init can also interact with various cloud platforms and services, such as Azure, AWS, OpenStack, and others. The purpose of cloud-init is to prepare the generic image of an laaS instance to fit a specific instance's configuration, such as hostname, network, security, and application settings. References:
* Cloud-init - The standard for customising cloud instances
* Understanding cloud-init - Azure Virtual Machines
* Tutorial - Customize a Linux VM with cloud-init in Azure - Azure Virtual Machines


NEW QUESTION # 34
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