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Lpi 305-300 Exam Syllabus Topics:

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

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Lpi LPIC-3 Exam 305: Virtualization and Containerization Sample Questions (Q78-Q83):

NEW QUESTION # 78
What is the purpose ofcloud-init?

Answer: B

Explanation:
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 # 79
Which of the following are true regarding the CPU of a QEMU virtual machine? (Choose two.)

Answer: A,E

Explanation:
Explanation
The CPU architecture of a QEMU virtual machine is independent of the host system's architecture. QEMU can emulate many CPU architectures, including x86, ARM, Alpha, and SPARC, regardless of the host system's architecture1. This allows QEMU to run guest operating systems that are not compatible with the host system's hardware. Therefore, option A is correct. QEMU virtual machines support multiple virtual CPUs in order to run SMP systems. QEMU uses the concept of virtual CPUs (vCPUs) to map the virtual machines to physical CPUs. Each vCPU is a thread that runs on a physical CPU core. QEMU allows the user to specify the number of vCPUs and the CPU model for each virtual machine. QEMU can run SMP systems with multiple vCPUs, as well as single-processor systems with one vCPU2. Therefore, option E is also correct. The other options are incorrect because they do not describe the CPU of a QEMU virtual machine. Option B is wrong because QEMU virtual machines can have more than one CPU with more than one core. Option C is wrong because QEMU does not require a dedicated physical CPU core for each virtual machine. QEMU can share the physical CPU cores among multiple virtual machines, depending on the load and the scheduling policy.
Option D is wrong because QEMU does not use the term CPU, but vCPU, to refer to the virtual machines' processors. References:
* QEMU vs VirtualBox: What's the difference? - LinuxConfig.org
* QEMU / KVM CPU model configuration - QEMU documentation
* Introduction - QEMU documentation
* Qemu/KVM Virtual Machines - Proxmox Virtual Environment


NEW QUESTION # 80
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?

Answer: E

Explanation:
To attach a container to a network when creating it, the --network flag must be used with the name of the network as the argument. The --network flag specifies the network mode for the container. By default, the network mode is bridge, which means the container is connected to the default bridge network. However, if a custom network is created, such as isolated_nw in this case, the container must be explicitly attached to it using the --network flag. For example, to create a container named web1 and attach it to the isolated_nw network, the command would be:
docker create --name web1 --network isolated_nw nginx
The other options are not valid parameters for docker create. The --eth0, --ethernet, and --attach flags do not exist. The --alias flag is used to specify an additional network alias for the container on a user-defined network, but it does not attach the container to the network. References:
* docker network create | Docker Documentation1
* docker create | Docker Documentation
* Networking overview | Docker Docs2


NEW QUESTION # 81
Which of the following resources can be limited by libvirt for a KVM domain? (Choose two.)

Answer: C,D

Explanation:
Explanation
Libvirt is a toolkit that provides a common API for managing different virtualization technologies, such as KVM, Xen, LXC, and others. Libvirt allows users to configure and control various aspects of a virtual machine (also called a domain), such as its CPU, memory, disk, network, and other resources. Among the resources that can be limited by libvirt for a KVM domain are:
* Amount of CPU time: Libvirt allows users to specify the number of virtual CPUs (vCPUs) that a domain can use, as well as the CPU mode, model, topology, and tuning parameters. Users can also set the CPU shares, quota, and period to control the relative or absolute amount of CPU time that a domain can consume. Additionally, users can pin vCPUs to physical CPUs or NUMA nodes to improve performance and isolation. These settings can be configured in the domain XML file under the <cpu> and <cputune> elements12.
* Size of available memory: Libvirt allows users to specify the amount of memory that a domain can use, as well as the memory backing, tuning, and NUMA node parameters. Users can also set the memory hard and soft limits, swap hard limit, and minimum guarantee to control the memory allocation and reclaim policies for a domain. These settings can be configured in the domain XML file under the <memory>, <memoryBacking>, and <memtune> elements13.
The other resources listed in the question are not directly limited by libvirt for a KVM domain. File systems allowed in the domain are determined by the disk and filesystem devices that are attached to the domain, which can be configured in the domain XML file under the <disk> and <filesystem> elements14. Number of running processes and number of available files are determined by the operating system and the file system of the domain, which are not controlled by libvirt.
References:
* libvirt: Domain XML format
* CPU Allocation
* Memory Allocation
* Hard drives, floppy disks, CDROMs


NEW QUESTION # 82
What kind of virtualization is implemented by LXC?

Answer: B


NEW QUESTION # 83
......

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