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Lpi 305-300 Exam Syllabus Topics:

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

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Lpi LPIC-3 Exam 305: Virtualization and Containerization Sample Questions (Q79-Q84):

NEW QUESTION # 79
Which of the following tasks are part of a hypervisor's responsibility? (Choose two.)

Answer: A,D

Explanation:
Explanation
A hypervisor is a software that creates and runs virtual machines (VMs) by separating the operating system and resources from the physical hardware. One of the main tasks of a hypervisor is to map the resources of VMs to the resources of the host system, such as CPU, memory, disk, and network. This allows the hypervisor to allocate and manage the resources among multiple VMs and ensure that they run efficiently and independently123. Another important task of a hypervisor is to isolate the VMs and prevent unauthorized access to resources of other VMs. This ensures the security and privacy of the VMs and their data, as well as the stability and performance of the host system. The hypervisor can use various techniques to isolate the VMs, such as virtual LANs, firewalls, encryption, and access control145.
The other tasks listed are not part of a hypervisor's responsibility, but rather of the guest operating system or the application running inside the VM. A hypervisor does not create filesystems during the installation of new VMs, as this is done by the installer of the guest operating system6. A hypervisor does not provide host-wide unique PIDs to the processes running inside the VMs, as this is done by the kernel of the guest operating system7. A hypervisor does not manage authentication to network services running inside a VM, as this is done by the network service itself or by a directory service such as LDAP or Active Directory8. References: 1 (search for "What is a hypervisor?"), 2 (search for "How does a hypervisor work?"), 3 (search for "The hypervisor gives each virtual machine the resources that have been allocated"), 4 (search for "Benefits ofhypervisors"), 5 (search for "Isolate the virtual machines and prevent unauthorized access"), 6 (search for "Create filesystems during the installation of new virtual machine quest operating systems"), 7 (search for "Provide host-wide unique PIDs to the processes running inside the virtual machines"), 8 (search for "Manage authentication to network services running inside a virtual machine").


NEW QUESTION # 80
What is Docker Hub?

Answer: D

Explanation:
Docker Hub is acloud-based container image registryused to store, manage, and distribute Docker container images. According to container documentation, it hosts bothofficial imagesand user-contributed images.
Docker Hub is not a Linux distribution, orchestration platform, or runtime. Therefore, the correct answer isB.


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

Answer: D,E

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.
:
libvirt: Domain XML format
CPU Allocation
Memory Allocation
Hard drives, floppy disks, CDROMs


NEW QUESTION # 82
Which of the following commands moves the libvirt domainweb1from the current host system to the host systemhost2?

Answer: A

Explanation:
Explanation
The correct command to move the libvirt domain web1 from the current host system to the host system host2 is virsh migrate web1 qemu+ssh://host2/system. This command uses the virsh migrate command, which initiates the live migration of a domain to another host1. The first argument is the name of the domain to migrate, which in this case is web1. The second argument is the destination URI, which specifies the connection to the remote host and the hypervisor to use2. In this case, the destination URI is qemu+ssh://host2/system, which means to use the QEMU driver and connect to host2 via SSH, and use the system instance of libvirtd3. The other options are incorrect because they either use invalid commands or arguments, such as node-update, pool-add, patch, or cp, or they do not specify the destination URI correctly.
References:
https://balamuruhans.github.io/2019/01/09/kvm-migration-with-libvirt.html
http://libvirt.org/migration.html


NEW QUESTION # 83
What is the purpose of the commandvagrant init?

Answer: E

Explanation:
The command vagrant init is used to initialize the current directory to be a Vagrant environment by creating an initial Vagrantfile if one does not already exist1. The Vagrantfile contains the configuration settings for the Vagrant box, such as the box name, box URL, network settings, synced folders, provisioners, etc. The command vagrant init does not execute any provisioning tool, start any box, install Vagrant on a Linux host, or download any box. Those actions are performed by other Vagrant commands, such as vagrant provision, vagrant up, vagrant install, and vagrant box add, respectively. References:
* 1: vagrant init - Command-Line Interface | Vagrant | HashiCorp Developer


NEW QUESTION # 84
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