304-200 무료 덤프문제 온라인 액세스

Which of the following commands provides a detailed list of all image files contained in the libvirt storage pool vol1?

• A.virsh vol-list vol1 --details
• B.virsh volumes --source vol1-details
• C.virsh list --volumes --pool vol1 --details
• D.virsh --show-pool vol1 --details
• E.virsh vol-details vol1

Which of the following statements is true regarding networking with libvirt?

• A.Libvirt's network functionality is limited to connecting virtual machines to a physical network interface of the host system.
• B.Libvirt networks appear, by default, as standard Linux bridges in the host system.
• C.Libvirt supports exactly one virtual network and connects all virtual machines to it.
• D.Libvirt assigns the same MAC address to all virtual machines and isolates their network interfaces at the link layer.
• E.Libvirt requires a dedicated network interface that may not be used by the host system.

How can data in a computing instance in an IaaS cloud be permanently saved and accessed even after the recreation of the computing instance? (Choose TWO correct answers.)

• A.By saving the data on persistent block devices that must be explicitly connected to the computing instance.
• B.By saving the data to object stores provided by a separate service in the cloud.
• C.By saving the data anywhere in the computing instance's file system.
• D.By saving the data to the memory of the computing instance using tmpfs.
• E.By saving the data to /cloud/persistent/ which is provided in all common IaaS clouds.

How does high availability clustering relate to periodic storage backup? (Choose TWO correct answers.)

• A.Regular backups may be reduced to the cluster configuration and cluster state data as this information is sufficient to recover any state of the cluster, including data, at any time.
• B.Backup procedures may have to be adapted to the cluster to ensure complete and recoverable backups.
• C.Backups should be located only on the local storage of the cluster and should not be backed up in order to prevent bandwidth congestion.
• D.Regular backups remain vital as they allow restoration of data that was accidentally deleted or corrupted.
• E.Regular backups become generally unnecessary as any data loss or corruption is automatically recovered by the high availability cluster.

Which of the following tasks are parts of a hypervisor's responsibility? (Choose TWO correct answers.)

• A.Ensure isolation and eliminate any interference between virtual machines.
• B.Create filesystems during the installation of new VM guest operating systems.
• C.Map the resources of virtual machines to the resources of the host system.
• D.Manage authentication to network services running inside a virtual machine.
• E.Provide host-wide unique PIDs to the processes running inside the VMs in order to ease interprocess communication between virtual machines.