305-300 TEST SAMPLE QUESTIONS & RELIABLE 305-300 EXAM SAMPLE

305-300 Test Sample Questions & Reliable 305-300 Exam Sample

305-300 Test Sample Questions & Reliable 305-300 Exam Sample

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To prepare for the LPIC-3 Exam 305: Virtualization and Containerization, candidates should have a solid understanding of Linux-based operating systems and virtualization technologies. They should also have experience with containerization tools such as Docker and be familiar with the principles of virtualization security and management. There are many resources available to help candidates prepare for this certification exam, including study guides, practice tests, and online training courses.

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305-300 Test Sample Questions | Lpi Reliable 305-300 Exam Sample: LPIC-3 Exam 305: Virtualization and Containerization Pass for Sure

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The Lpi 305-300 Exam is designed to test candidates on their ability to manage and deploy virtualization and containerization technologies in an enterprise environment. The Lpi 305-300 exam primarily focuses on virtualization technologies such as KVM, Xen, and VirtualBox, and containerization technologies such as Docker and Kubernetes. Additionally, the exam also tests candidates on their knowledge of various administrative tasks, including storage management, network configuration, and troubleshooting.

Lpi LPIC-3 Exam 305: Virtualization and Containerization Sample Questions (Q46-Q51):

NEW QUESTION # 46
Which of the following services can QEMU provide in a user network? (Choose three.)

  • A. TFTP
  • B. CIFS
  • C. BGP
  • D. DHCP
  • E. AppleTalk

Answer: A,D

Explanation:
Explanation
QEMU can provide some network services in a user network, which is a mode of networking that does not require any administrator privilege to run. The user network uses the SLIRP TCP/IP emulator to create a virtual NAT'ted subnet, with a DHCP server started by QEMU that gives out IP addresses to the guest machines and puts the host on 10.0.2.21. QEMU can also provide a TFTP server in the user network, which can be used to boot the guest machines from a network image. The TFTP server can be configured with the
-tftp option2. QEMU does not provide BGP, CIFS, or AppleTalk services in the user network. BGP is a routing protocol that is used to exchange routing information between autonomous systems on the Internet3. CIFS is a file-sharing protocol that is used to access files and printers on a network4. AppleTalk is a deprecated network protocol suite that was used by Apple devices5. These services require more advanced networking features than the user network can offer, such as bridging, routing, or tunneling.
References:
* Documentation/Networking - QEMU
* QEMU/Networking - Wikibooks, open books for an open world
* Border Gateway Protocol - Wikipedia
* Common Internet File System - Wikipedia
* AppleTalk - Wikipedia


NEW QUESTION # 47
Which of the following mechanisms are used by LXC and Docker to create containers? (Choose three.)

  • A. Control Groups
  • B. POSIXACLs
  • C. File System Permissions
  • D. Linux Capabilities
  • E. Kernel Namespaces

Answer: A,D,E

Explanation:
Explanation
LXC and Docker are both container technologies that use Linux kernel features to create isolated environments for running applications. The main mechanisms that they use are:
* Linux Capabilities: These are a set of privileges that can be assigned to processes to limit their access to certain system resources or operations. For example, a process with the CAP_NET_ADMIN capability can perform network administration tasks, such as creating or deleting network interfaces. Linux
* capabilities allow containers to run with reduced privileges, enhancing their security and isolation.
* Kernel Namespaces: These are a way of creating separate views of the system resources for different processes. For example, a process in a mount namespace can have a different file system layout than the host or other namespaces. Kernel namespaces allow containers to have their own network interfaces, process IDs, user IDs, and other resources, without interfering with the host or other containers.
* Control Groups: These are a way of grouping processes and applying resource limits and accounting to them. For example, a control group can limit the amount of CPU, memory, disk I/O, or network bandwidth that a process or a group of processes can use. Control groups allow containers to have a fair share of the system resources and prevent them from exhausting the host resources.
POSIX ACLs and file system permissions are not mechanisms used by LXC and Docker to create containers.
They are methods of controlling the access to files and directories on a file system, which can be applied to any process, not just containers.
References:
* LXC vs Docker: Which Container Platform Is Right for You?
* LXC vs Docker: Why Docker is Better in 2023 | UpGuard
* What is the Difference Between LXC, LXD and Docker Containers
* lxc - Which container implementation docker is using - Unix & Linux Stack Exchange


NEW QUESTION # 48
Which of the following tasks are part of a hypervisor's responsibility? (Choose two.)

  • A. Map the resources of virtual machines to the resources of the host system.
  • B. Isolate the virtual machines and prevent unauthorized access to resources of other virtual machines.
  • C. Create filesystems during the installation of new virtual machine quest operating systems.
  • D. Manage authentication to network services running inside a virtual machine.
  • E. Provide host-wide unique PIDs to the processes running inside the virtual machines in order to ease inter-process communication between virtual machines.

Answer: A,B


NEW QUESTION # 49
Which of the following network interface types are valid in an LXD container configuration? (Choose three.)

  • A. bridged
  • B. wifi
  • C. macvlan
  • D. physical
  • E. ipsec

Answer: A,C,D

Explanation:
Explanation
LXD supports the following network interface types in an LXD container configuration1:
* macvlan: Creates a virtual interface on the host with a unique MAC address and attaches it to an existing physical interface. This allows the container to have direct access to the physical network, but prevents communication with the host and other containers on the same host2.
* bridged: Connects the container to an existing bridge interface on the host. This allows the container to communicate with the host and other containers on the same bridge, as well as the external network if the bridge is connected to a physical interface3.
* physical: Passes an existing physical interface on the host to the container. This allows the container to have exclusive access to the physical network, but removes the interface from the host4.
The other network interface types, ipsec and wifi, are not valid in an LXD container configuration. Ipsec is a protocol for secure communication over IP networks, not a network interface type. Wifi is a wireless technology for connecting devices to a network, not a network interface type. References:
* About networking - Canonical LXD documentation
* Macvlan network - Canonical LXD documentation
* Bridge network - Canonical LXD documentation
* Physical network - Canonical LXD documentation


NEW QUESTION # 50
Which of the following statements about the commandlxc-checkpointis correct?

  • A. It creates a container image based on an existing container.
  • B. It only works on stopped containers.
  • C. It writes the status of the container to a file.
  • D. It creates a clone of a container.
  • E. It doubles the memory consumption of the container.

Answer: C

Explanation:
Explanation
The command lxc-checkpoint is used to checkpoint and restore containers. Checkpointing a container means saving the state of the container, including its memory, processes, file descriptors, and network connections, to a file or a directory. Restoring a container means resuming the container from the saved state, as if it was never stopped. Checkpointing and restoring containers can be useful for various purposes, such as live migration, backup, debugging, or snapshotting. The command lxc-checkpoint has the following syntax:
lxc-checkpoint {-n name} {-D path} [-r] [-s] [-v] [-d] [-F]
The options are:
* -n name: Specify the name of the container to checkpoint or restore.
* -D path: Specify the path to the file or directory where the checkpoint data is dumped or restored.
* -r, --restore: Restore the checkpoint for the container, instead of dumping it. This option is incompatible with -s.
* -s, --stop: Optionally stop the container after dumping. This option is incompatible with -r.
* -v, --verbose: Enable verbose criu logging. Only available when providing -r.
* -d, --daemon: Restore the container in the background (this is the default). Only available when providing -r.
* -F, --foreground: Restore the container in the foreground. Only available when providing -r.
The command lxc-checkpoint uses the CRIU (Checkpoint/Restore In Userspace) tool to perform the checkpoint and restore operations. CRIU is a software that can freeze a running application (or part of it) and checkpoint it to a hard drive as a collection of files. It can then use the files to restore and run the application from the point it was frozen at1.
The other statements about the command lxc-checkpoint are not correct. It does not create a clone or an image of a container, nor does it double the memory consumptionof the container. It can work on both running and stopped containers, depending on the options provided. References:
* Linux Containers - LXC - Manpages - lxc-checkpoint.12
* lxc-checkpoint(1) - Linux manual page - man7.org3
* CRIU4


NEW QUESTION # 51
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