Which of the following statements about configuring a virtual switch is incorrect?

• A.The virtual switch uses the vNer0 port of the virtual switch, and the port is configured with VLAN 100. Then the physical switch port connected to the virtual switch must allow VLAN 100 to pass through, otherwise the virtual machine cannot communicate with the external network.
• B.The uplink port of the virtual switch allows all VLANs to pass
• C.The storage virtual switch must be configured with an IP address, otherwise the CVK host cannot mount the IP SAN storage through the storage virtual switch.
• D.When adding a virtual switch, you must bind a physical interface, and when binding multiple physical interfaces, you must configure link aggregation mode and responsibility sharing mode.

Comment: *

Name: *

Email: *

Verification: *

The unit for allocating computing resources is

• A.Host
• B.Cluster
• C.Virtual Machine
• D.Host pool

Comment: *

Name: *

Email: *

Verification: *

When the virtual machine is started, it prompts that the disk does not exist, but it exists in the CAS front-end interface and the disk capacity is also displayed. What may be the reason?

• A.The backing-file of the virtual machine disk has been deleted
• B.Disk capacity is too small
• C.There is a problem with the front-end interface display
• D.The virtual machine disk's backing-file has been moved to another directory

Comment: *

Name: *

Email: *

Verification: *

The following description of virtual machine startup is incorrect

• A.After a virtual machine fails to start, the startup failure information will be recorded in the "/var/log/libvirtd.log" log
• B.If the CVK host does not have hardware-assisted virtualization enabled, the virtual machine will not be able to start normally.
• C.When a suspended virtual machine is restarted after hibernation, the virtual machine remains in the suspended state.
• D.When the CPU of the CVK host reaches 87%, the virtual machine can still be started with less virtual CPU allocated

Comment: *

Name: *

Email: *

Verification: *

Which of the following is correct about the common maintenance commands of CAS?

• A.virsh list can view all running virtual machines on the host.
• B.qemu-img info command can view virtual machine disk information
• C.After executing the service apache restart command, all tasks running in the foreground will be interrupted.
• D.virsh pool-list -all can view the storage information mounted on this cvk host.

Comment: *

Name: *

Email: *

Verification: *