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Lpi 305-300 Exam Syllabus Topics:

Section	Weight	Objectives
Container Virtualization	25%	- Container Orchestration Platforms 1. Kubernetes key concepts 2. Docker Swarm key concepts 3. Docker Compose 4. Understanding container orchestration importance - LXC 1. Resource limits configuration 2. LXC/LXD profiles and images 3. Use system containers using LXC and LXD 4. LXC version 3.0 or higher - Docker 1. Manage Docker nodes and Docker containers 2. How Docker interacts with the node's Linux system 3. Managing volumes and networks 4. Building images with Dockerfiles 5. Deploying applications with Docker 6. Docker architecture - Container Virtualization Concepts 1. Concept of container virtualization 2. Linux capabilities 3. Troubleshooting container components using standard Linux tools 4. Differences between system containers and application containers 5. Linux kernel components: namespaces and cgroups
Full Virtualization	25%	- Virtualization Concepts and Theory 1. Device emulation vs paravirtual drivers 2. Xen, QEMU and libvirt terminology 3. General concepts, theory and terminology of virtualization 4. Hypervisor architectures 5. Hardware virtualization extensions (VT-x/AMD-V) - Virtual Machine Disk Image Management 1. Accessing data stored within an image 2. qemu-img info, convert, resize operations 3. qcow2 vs raw formats 4. Manage virtual machines disk images 5. Backing file chains and snapshot handling 6. Converting disk images between formats and hypervisors - QEMU 1. QEMU networking 2. QEMU machine types 3. QEMU command line tools 4. Install, configure, maintain, migrate and troubleshoot QEMU installations - Libvirt Virtual Machine Management 1. Snapshots and migrations 2. Manage virtualization hosts and VMs (libvirt domains) using libvirt and related tools 3. Virtual networking and storage management 4. Domain XML configuration 5. virsh command usage (list, define, undefine, start, stop) 6. virt-install options - Xen 1. Domain configuration 2. Install, configure, maintain, migrate and troubleshoot Xen installations 3. Xen management tools 4. Xen version 4.x
VM Deployment and Provisioning	10%	- Vagrant 1. Vagrantfiles and providers 2. Use Vagrant to manage virtual machines 3. Provisioning of virtual machines with Vagrant - Cloud Init 1. Using cloud-init for instance initialization 2. Cloud-init configuration and modules - Packer 1. Using Packer for automated image building 2. Packer templates and builders - Cloud Management Tools 1. Basic feature knowledge of commonly available cloud management tools 2. Common offerings in public clouds

Section

Weight

Objectives

Container Virtualization

25%

- Container Orchestration Platforms

1. Kubernetes key concepts
2. Docker Swarm key concepts
3. Docker Compose
4. Understanding container orchestration importance

- LXC

1. Resource limits configuration
2. LXC/LXD profiles and images
3. Use system containers using LXC and LXD
4. LXC version 3.0 or higher

- Docker

1. Manage Docker nodes and Docker containers
2. How Docker interacts with the node's Linux system
3. Managing volumes and networks
4. Building images with Dockerfiles
5. Deploying applications with Docker
6. Docker architecture

- Container Virtualization Concepts

1. Concept of container virtualization
2. Linux capabilities
3. Troubleshooting container components using standard Linux tools
4. Differences between system containers and application containers
5. Linux kernel components: namespaces and cgroups

Full Virtualization

25%

- Virtualization Concepts and Theory

1. Device emulation vs paravirtual drivers
2. Xen, QEMU and libvirt terminology
3. General concepts, theory and terminology of virtualization
4. Hypervisor architectures
5. Hardware virtualization extensions (VT-x/AMD-V)

- Virtual Machine Disk Image Management

1. Accessing data stored within an image
2. qemu-img info, convert, resize operations
3. qcow2 vs raw formats
4. Manage virtual machines disk images
5. Backing file chains and snapshot handling
6. Converting disk images between formats and hypervisors

- QEMU

1. QEMU networking
2. QEMU machine types
3. QEMU command line tools
4. Install, configure, maintain, migrate and troubleshoot QEMU installations

- Libvirt Virtual Machine Management

1. Snapshots and migrations
2. Manage virtualization hosts and VMs (libvirt domains) using libvirt and related tools
3. Virtual networking and storage management
4. Domain XML configuration
5. virsh command usage (list, define, undefine, start, stop)
6. virt-install options

- Xen

1. Domain configuration
2. Install, configure, maintain, migrate and troubleshoot Xen installations
3. Xen management tools
4. Xen version 4.x

VM Deployment and Provisioning

10%

- Vagrant

1. Vagrantfiles and providers
2. Use Vagrant to manage virtual machines
3. Provisioning of virtual machines with Vagrant

- Cloud Init

1. Using cloud-init for instance initialization
2. Cloud-init configuration and modules

- Packer

1. Using Packer for automated image building
2. Packer templates and builders

- Cloud Management Tools

1. Basic feature knowledge of commonly available cloud management tools
2. Common offerings in public clouds

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Lpi LPIC-3 Exam 305: Virtualization and Containerization 305-300 Prüfungsfragen mit Lösungen (Q40-Q45):

40. Frage
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 --volume-backend datastore -v /data --name service debian bash
C. docker run --share-with datastore --name service debian bash
D. docker run -v datastore:/data --name service debian bash
E. docker run --volumes-from datastore --name service debian bash

Antwort: E

41. Frage
After creating a new Docker network using the following command:
docker network create --driver bridge isolated_nw
which parameter must be added todocker createin order to attach a container to the network?

A. --ethernet=isolated_nw
B. --eth0=isolated_nw
C. --network=isolated_nw
D. --attach=isolated_nw
E. --alias=isolated_nw

Antwort: C

42. Frage
Which directory is used bycloud-initto store status information and configuration information retrieved from external sources?

A. /var/lib/cloud/
B. /proc/sys/cloud/
C. /opt/cloud/var/
D. /etc/cloud-init/cache/
E. /tmp/.cloud/

Antwort: A

Begründung:
Explanation
cloud-init uses the /var/lib/cloud/ directory to store status information and configuration information retrieved from external sources, such as the cloud platform'smetadata service or user data files. The directory contains subdirectories for different types of data, such as instance, data, handlers, scripts, and sem. The instance subdirectory contains information specific to the current instance, such as the instance ID, the user data, and the cloud-init configuration. The data subdirectory contains information about the data sources that cloud-init detected and used. The handlers subdirectory contains information about the handlers that cloud-init executed.
The scripts subdirectory contains scripts that cloud-init runs at different stages of the boot process, such as per-instance, per-boot, per-once, and vendor. The sem subdirectory contains semaphore files that cloud-init uses to track the execution status of different modules and stages. References:
* Configuring and managing cloud-init for RHEL 8 - Red Hat Customer Portal
* vsphere - what is the linux file location where the cloud-init user ...

43. Frage
Which of the following kinds of data cancloud-initprocess directly from user-data? (Choose three.)

A. Base64-encoded binary files to execute
B. cloud-config declarations in YAML
C. ISO images to boot from
D. Shell scripts to execute
E. Lists of URLs to import

Antwort: B,D,E

Begründung:
Cloud-init is a tool that allows users to customize the configuration and behavior of cloud instances during the boot process. Cloud-init can process different kinds of data that are passed to the instance via user-data, which is a mechanism provided by various cloud providers to inject data into the instance. Among the kinds of data that cloud-init can process directly from user-data are:
* Shell scripts to execute: Cloud-init can execute user-data that is formatted as a shell script, starting with the #!/bin/sh or #!/bin/bash shebang. The script can contain any commands that are valid in the shell environment of the instance. The script is executed as the root user during the boot process12.
* Lists of URLs to import: Cloud-init can import user-data that is formatted as a list of URLs, separated by newlines. The URLs can point to any valid data source that cloud-init supports, such as shell scripts, cloud-config files, or include files. The URLs are fetched and processed by cloud-init in the order they appear in the list13.
* cloud-config declarations in YAML: Cloud-init can process user-data that is formatted as a cloud- config file, which is a YAML document that contains declarations for various cloud-init modules. The cloud-config file can specify various aspects of the instance configuration, such as hostname, users, packages, commands, services, and more. The cloud-config file must start with the #cloud- config header14.
The other kinds of data listed in the question are not directly processed by cloud-init from user-data. They are either not supported, not recommended, or require additional steps to be processed. These kinds of data are:
* ISO images to boot from: Cloud-init does not support booting from ISO images that are passed as user- data. ISO images are typically used to install an operating system on a physical or virtual machine, not to customize an existing cloud instance. To boot from an ISO image, the user would need to attach it as a secondary disk to the instance and configure the boot order accordingly5.
* Base64-encoded binary files to execute: Cloud-init does not recommend passing binary files as user- data, as they may not be compatible with the instance's architecture or operating system. Base64- encoding does not change this fact, as it only converts the binary data into ASCII characters. To execute a binary file, the user would need to decode it and make it executable on the instance6.
:
User-Data Formats - cloud-init 22.1 documentation
User-Data Scripts
Include File
Cloud Config
How to Boot From ISO Image File Directly in Windows
How to run a binary file as a command in the terminal?.

44. Frage
Which of the following statements is true regarding networking with libvirt?

A. Libvirt supports exactly one virtual network and connects all virtual machines to it.
B. Libvirt's network functionality is limited to connectingvirtual machines to a physical network interface of the host system.
C. Libvirt assiqns the same MAC address to all virtual machines and isolates their network interfaces at the link layer.
D. Libvirt networks appear, by default, as standard Linux bridges in the host system.
E. Libvirt requires a dedicated network interface that may not be used by the host system.

Antwort: D

45. Frage
......

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