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305-300 Exam Format | 305-300 Course Contents | 305-300 Course Outline | 305-300 Exam Syllabus | 305-300 Exam Objectives

- virtualization terminology

- pros and cons of virtualization

- various variations of Hypervisors and Virtual Machine Monitors

- major aspects of migrating physical to virtual machines

- major aspects of migrating virtual machines between host systems

- features and implications of virtualization for a virtual machine, such as snapshotting, pausing, cloning and resource limits

- oVirt, Proxmox, systemd-machined and VirtualBox

- Open vSwitch



- Hypervisor

- Hardware Virtual Machine (HVM)

- Paravirtualization (PV)

- Emulation and Simulation

- CPU flags

- /proc/cpuinfo

- Migration (P2V, V2V)





- architecture of Xen, including networking and storage

- Basic configuration of Xen nodes and domains

- Basic management of Xen nodes and domains

- Basic troubleshooting of Xen installations

- XAPI

- XenStore

- Xen Boot Parameters

- xm utility



- Domain0 (Dom0), DomainU (DomU)

- PV-DomU, HVM-DomU

- /etc/xen/

- xl

- xl.cfg

- xl.conf

- xentop



- architecture of QEMU, including KVM, networking and storage

- Start QEMU instances from the command line

- Manage snapshots using the QEMU monitor

- Install the QEMU Guest Agent and VirtIO device drivers

- Troubleshoot QEMU installations, including networking and storage

- important QEMU configuration parameters



- Kernel modules: kvm, kvm-intel and kvm-amd

- /dev/kvm

- QEMU monitor

- qemu

- qemu-system-x86_64

- ip

- brctl

- tunctl





- architecture of libvirt

- Manage libvirt connections and nodes

- Create and manage QEMU and Xen domains, including snapshots

- Manage and analyze resource consumption of domains

- Create and manage storage pools and volumes

- Create and manage virtual networks

- Migrate domains between nodes

- how libvirt interacts with Xen and QEMU

- how libvirt interacts with network services such as dnsmasq and radvd

- libvirt XML configuration files

- virtlogd and virtlockd



- libvirtd

- /etc/libvirt/

- virsh (including relevant subcommands)



- Understand features of various virtual disk image formats, such as raw images, qcow2 and VMDK

- Manage virtual machine disk images using qemu-img

- Mount partitions and access files contained in virtual machine disk images using libguestfish

- Copy physical disk content to a virtual machine disk image

- Migrate disk content between various virtual machine disk image formats

- Awareness of Open Virtualization Format (OVF)



- qemu-img

- guestfish (including relevant subcommands)

- guestmount

- guestumount

- virt-cat

- virt-copy-in

- virt-copy-out

- virt-diff

- virt-inspector

- virt-filesystems

- virt-rescue

- virt-df

- virt-resize

- virt-sparsify

- virt-p2v

- virt-p2v-make-disk

- virt-v2v

- virt-sysprep





- concepts of system and application container

- analyze kernel namespaces

- analyze control groups

- analyze capabilities

- role of seccomp, SELinux and AppArmor for container virtualization

- LXC and Docker leverage namespaces, cgroups, capabilities, seccomp and MAC



- principle of runc

- principle of CRI-O and containerd

- OCI runtime and image specifications

- Kubernetes Container Runtime Interface (CRI)

- podman, buildah and skopeo

- other container virtualization approaches in Linux and other free operating systems, such as rkt, OpenVZ, systemd-nspawn or BSD Jails



- nsenter

- unshare

- ip (including relevant subcommands)

- capsh

- /sys/fs/cgroups

- /proc/[0-9]+/ns

- /proc/[0-9]+/status



- architecture of LXC and LXD

- Manage LXC containers based on existing images using LXD, including networking and storage

- Configure LXC container properties

- Limit LXC container resource usage

- Use LXD profiles

- LXC images

- Awareness of traditional LXC tools

- lxd

- lxc (including relevant subcommands)





- architecture and components of Docker

- Manage Docker containers by using images from a Docker registry

- images and volumes for Docker containers

- logging for Docker containers

- networking for Docker

- Use Dockerfiles to create container images

- Run a Docker registry using the registry Docker image



- dockerd

- /etc/docker/daemon.json

- /var/lib/docker/

- docker

- Dockerfile



- relevance of container orchestration

- key concepts of Docker Compose and Docker Swarm

- key concepts of Kubernetes and Helm

- Awareness of OpenShift, Rancher and Mesosphere DC/OS



- Understand common offerings in public clouds

- Basic feature knowledge of OpenStack

- Basic feature knowledge of Terraform

- Awareness of CloudStack, Eucalyptus and OpenNebula

- IaaS, PaaS, SaaS

- OpenStack

- Terraform



- Understand the functionality and features of Packer

- Create and maintain template files

- Build images from template files using different builders

- packer



- features and concepts of cloud-init, including user-data, initializing and configuring cloud-init

- Use cloud-init to create

- resize and mount file systems

- configure user accounts

- including login credentials such as SSH keys and install software packages from the distributions repository

- Integrate cloud-init into system images

- Use config drive datasource for testing

- cloud-init

- user-data

- /var/lib/cloud/



- Vagrant architecture and concepts, including storage and networking

- Retrieve and use boxes from Atlas

- Create and run Vagrantfiles

- Access Vagrant virtual machines

- Share and synchronize folder between a Vagrant virtual machine and the host system

- Vagrant provisioning, i.e. File and Shell provisioners

- multi-machine setup

- vagrant

- Vagrantfile

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