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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: VM Deployment and Provisioning | 12% | - cloud-init - Packer - Vagrant - Cloud Management Tools |
| Topic 2: Container Virtualization | 25% | - LXC - Container Virtualization Concepts - Container Orchestration Platforms - Docker |
| Topic 3: Full Virtualization | 25% | - Xen - Virtualization Concepts and Theory - QEMU - Virtual Machine Disk Image Management - Libvirt Virtual Machine Management |
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NEW QUESTION # 23
In order to determine if a virtualization host offers Intel VT-x support, which CPU flag must be searched for in the file /proc/cpuinfo?
Answer:
Explanation:
vmx
Explanation:
Intel VT-x is Intel's hardware-assisted virtualization technology and is required to run hypervisors such as KVMefficiently. According to Linux and KVM documentation, support for Intel VT-x can be verified by checking the CPU flags listed in the /proc/cpuinfo file.
The specific flag that indicates Intel VT-x support isvmx. This flag appears in the flags section for each processor core if VT-x is available and enabled in the system firmware (BIOS or UEFI). The presence of vmx confirms that the CPU supports hardware virtualization extensions required by KVM.
If the flag is absent, virtualization may either be unsupported by the CPU or disabled in the firmware settings.
For AMD processors, a different flag (svm) is used.
Virtualization documentation consistently references the vmx flag as the authoritative indicator for Intel VT-x support. Therefore, the correct and documented answer isvmx.
NEW QUESTION # 24
Which of the following statements in aDockerfileleads to a container which outputs hello world? (Choose two.)
Answer: C,E
NEW QUESTION # 25
Which sub-command of xl changes the media inside a virtual CD-ROM drive of a Xen guest domain?
(Specify ONLY the sub-command without any path or parameters.)
Solution:
block-attach - or - xl cd-insert - or - cd-eject - or - xl cd-eject - or - cd-insert - or - xl block-attach - or - block-detach - or - xl block-detach Determine whether the given solution is correct?
Answer: A
Explanation:
According to official Xen xl toolstack documentation, thecorrect sub-commandsused to change media in a virtual CD-ROM drive arecd-insertandcd-eject. These commands are specifically designed for inserting or ejecting ISO media from a Xen guest's virtual CD-ROM device.
While commands such as block-attach and block-detach are valid xl sub-commands, they are used for attaching and detaching block devices in general and arenot specific to CD-ROM media operations. The provided solution lists multiple commands, including incorrect and unrelated ones, rather than specifying the correct sub-command precisely.
Because the solution does not accurately and exclusively identify the correct xl sub-command, it is considered incorrect. Therefore, the correct determination isB.
NEW QUESTION # 26
Which of the following are container orchestration platforms?
Answer: B,D
Explanation:
Container orchestration platforms are responsible fordeploying, scaling, networking, and managing containerized applicationsacross multiple hosts. According to containerization documentation,Docker SwarmandKubernetesare recognized container orchestration platforms.
Docker Swarmis Docker's native orchestration solution, providing clustering, service discovery, load balancing, and rolling updates.Kubernetesis the industry-standard orchestration platform, offering advanced scheduling, self-healing, horizontal scaling, and declarative configuration.
Docker Composeis not considered a full orchestration platform; it is primarily designed fordefining and running multi-container applications on a single host, mainly for development and testing.LXCis a container runtime and system container technology, not an orchestration framework.
Container documentation clearly distinguishes orchestration platforms from runtimes and local development tools. Therefore, the correct answers areB and D.
NEW QUESTION # 27
Which of the following commands moves the libvirt domainweb1from the current host system to the host systemhost2?
Answer: C
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 # 28
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