H13-531_V2.0 Questions and Answers

hostVBSprocess withOSDProcess communication exception

GlanceProvides query, upload and download of virtual machine images

MDCProcess exception

hostVBSinternal error

The port used by the destination virtual machine to communicate with the source virtual machine

The number of disks of the destination virtual machine

The disk capacity of the destination virtual machine

destination virtual machineIPaddress

TRUE

FLASE

Unable to meet requirements

Virtual Machine Live Migration Changes Datastore

Virtual machine live migration changes hosts and datastores

Virtual Machine Live Migration Change Host

Truel

False

VDCadministrator andVDCThe salesperson can define the approval process.

The approval process supports real-time modification of wells to take effect in the release state.

Each level of approval process can specify one or more approvers, as long as any approver approves, the approval of this level is passed.

The approval process can set up multi-level approval, up to5class correct.

icon

sheet

report

data

On the same physical host, allGuest Physical Memorycan be larger than the physical host'sHost Physical Memory

On the same physical host, allGuest Physical MemoryMust be less than or equal to the physical host'sHost Physical Memory

In a virtual machine, all applications correspond toGuest virtual memorycan be larger than the virtual machine'sGuest Physical Memory

Already in a virtual machine, all applications correspond toGuest Virtual MemoryMust be less than or equal to the virtual machine's Guest Physical Memory

Disaster Recovery Capability Level2level correspondenceRTOfortwenty fourhours or more,RPOfor1day to day7sky.

Disaster Recovery Capability Level1level correspondenceRTOfor2days or more,RPOfor1day to day7sky

Disaster Recovery Capability Level Up CorrespondenceRTOfor12hours or more,RPOhours to1sky.

Disaster Recovery Capability Level4level correspondenceRTOhours to2sky,RPOhours to2skycorrect

MemoryQoSTechnology works just as well with physical machines.

open memoryQoSAfter that, the memory space that the virtual machine can use can exceed the memory size set by the virtual machine

through memoryQosIt can solve the problem of resource preemption during memory reuse

MemoryQoSThe technique mainly achieves the answer by setting memory reservation and memory share

VLB

ITA

HDC

WI

The administrator adjusted the port group of one of them

The administrator adjusted one of theVMdescription of

One of the administrator's adjustmentsVMmemory size

The administrator adjusted the disk capacity of one of them

Check all hosts when initializing storage resources

When the shared storage type is IP SAN, ensure that the storage network of the host and the business interface of the storage are connected. C. Check the corresponding host when adding data storage

Check all hosts when associating storage devices

port group

uplink

virtual network card

storage interface

wrong

right

External OM

External_Base

Internal_Base

Extermal_API

TowardsVRMorvcenterIssue a backup task

received fromCANSnapshot of the virtual machine sent by the host

Distribute backup tasks to production storage

Receive backup data from production storage

vCPUUtilization

vCPUreservation rate

remaining memory resources

vCPUremaining resources

raw

vhd

iso

qcow2

CNAshost offline

CNAThe host is in maintenance mode

CNAThe host management network port is abnormal

CNAhost process exception

Each user can apply for multiplevPC.

By default, in differentVPCmiddleECScannot access each other.

VPCIt can realize the isolation of computing resources at the network level.

eachVPCOnly one subnet can be created below.

temporary changeiptablesRules result in restricted access to virtual machines

The network where the virtual machine is locatedIPconflict

The host where the virtual machine is located is faulty

The file system of the virtual machine is corrupted

Data consistency check is enabled on the storage resource

storage interfaceVLAN IDwrong setting

LUNbad block

Configure a separate network plane to host virtualizationSANStore heartbeat traffic

CSDR

VBS

VHA

CSBS

There are four types of NAT gateways: small, medium, large and extra large

To create a NAT gateway, you must specify the VPC, subnet, and NAT gateway specifications where the NAT gateway is located

The specifications of the NAT gateway will affect the maximum number of connections and the number of new connections per second of the SNAT function, and the data throughput

The amount is determined by the bandwidth of the Elastic IP

The set composed of five elements: destination IP address, destination port, and transport layer protocol is regarded as a DNAT connect

2-4-3-1-5

3-4-2-1-5

C 3-2-4-1-5

4-2-3-1-5

SR-OV realizes the distribution of PCI functions to multiple virtual interfaces to share a PCI in a virtualized environment

device resources

SR-IOV reduces the V/O overhead in the software simulation layer to improve the network forwarding performance of the virtual machine

SR-IOV can only assign a physical NIC device to one virtual machine

The port group created in the distributed switch that selects the SRIOV pass-through mode, the port type can only be used "ordinary"

The host where the virtual machine is located has completed the huge page configuration and takes effect

The cluster where the virtual machine is located has been set to a high-performance cluster

Turn on the IMC mode of the cluster where the virtual machine is located

A distributed switch of the user-mode switching mode type has been created

The GPU hardware virtualization technology virtualizes the graphics card into several VCPUs, and each VGPU is bound to a virtual machine.

The virtual machine directly accesses the VGPU as it accesses the GPU

GPU hardware virtualization supports up to 64 users sharing one GPU card

Through the management of graphical workstations, the graphical workstation can be imported into the desktop cloud solution, and sent to the desktop cloud solution.

End users provide the HDP protocol to access the graphics red workstation to obtain the 3D acceleration capability of the GPU

GPU pass-through technology binds each physical GPU to a small number of virtual machines, and the virtual machines directly access to GPU

The copy task in the recovery process can be completed by the remote copy software WinSCP

It can be verified whether the ITA service is restored by checking whether the ITA alarm is eliminated and whether the desktop can be issued normally.

no success

There is no need to uninstall and then reinstall the ITA during the recovery process

After the ITA data is restored, the data from the backup time to the restore time will be lost

The license needs to be reactivated after Windows migration

Disk drives may change after migration

The network card MAC and IP address will change

Windows dynamic disk will become a shared disk after migration

True

False

FTP

NFS

CIFS

HTTPS

True

Fault

The device is bound to the user

Access time control

TC is bound to the computer

Access site control

True

False

HBA card is required when connecting to FC--SAN. In this scenario, cinder-volume can be deployed in virtual In the virtual host

There is no need to deploy the image-cache partition when deploying the cinder-volume host

C A set of cinder-volume (at least one node) connected to only one storage pool

cinder-volume can only be deployed on the control node

The network cable connected to the host network port is loose

The VRM clock synchronization process is abnormal

The network cable of the switch connected to the host is loose or damaged

The host is restarting

There is no virtual machine in the security group. If there is a virtual machine in the security group, you need to move the virtual machine out of the security group

The authorization behavior between the security group to be deleted and other security groups does not affect the removal operation

Except for a security group to which the virtual machine belongs, other security groups are not affected by the virtual machine

After the security group is deleted, all security group rules in the group are deleted at the same time

Swift is a scalable redundant storage system. Adopt a fully symmetric, resource-oriented distributed system framework

Structure design, all components are scalable, avoid spreading due to single point of failure and affecting the operation of the entire system

Heat can orchestrate complex cloud applications and implement metering and monitoring of assets by calling OpenStack APIs according to the defined templates

Ironic provides a series of AP interfaces for managing physical machines, which can

From the installation of the operating system on the physical machine to the removal of the physical machine for maintenance

Cinder provides a unified interface, on-demand allocation, and persistent block storage service for the cloud platform.

Access different types of back-end storage in a dynamic way

True

False

True

False

nova - compute

nova - conductor

nova-scheduler

nova-api

The prerequisite for deleting a security group is that there are no virtual machines in the security group.

Changes to security group rules need to be manually applied to virtual machines within the security group

You must create a security group before adding rules.

Before adding rules, the security group will deny all by default

When the virtual machine template is a full copy template, the configuration mode must be normal delay zero

When the virtual machine template is a full copy template, the configuration mode is recommended to be normal delay zero.

When the virtual machine template is a linked clone template, the configuration mode is recommended to be thin

When the virtual machine template is a linked-clone template, the configuration mode must be condensed Correct

Configure the correct virtual machineIPaddress

Configure the correct configuration for this virtual machineMA, Caddress

Configure pinning for this virtual machineIPaddress

Configure the gateway address for this virtual machine

desktop standardization

mobile office

Terminal and data isolation

automated scheduling

Different services can use different forward proxy addresses.

The system defaults to the forward proxy rules of the External APl network plane that serves the students.

The system enforces that different services must use the same forward proxy rules.

The forward proxy rules configured by default in the system cannot be modified.

VDC roles include operation administrator, VDC administrator, maintenance administrator, VDC salesperson,

VDC read-only administrators and custom roles

The VDC administrator has the highest authority for operation management

In the

VDC tenant model, project resources are isolated from each other. One VDC can contain multiple projects, and one project

You can also own multiple VDCs

For multinational or trans-provincial companies, subsidiaries or provincial companies can be divided into first-level VDCs, and special-level VDCs.

Divisions into secondary VDCs

VPC can realize the isolation of computing resources at the network level.

Only one subnet can be created under each VPC.

Each user can apply for multiple VPCs.

By default, ECSs in different VPCs cannot communicate with each other.

VNC login may touch end user data and should be used with caution.

through VNC, the administrator can connect and view the interface of the virtual machine, which is convenient for the management of the virtual machine

And maintenance.

After VNC logs in to the Linux virtual machine, the administrator cannot log in to the virtual machine via SSH.

The virtual machine without Tools installed cannot log in with VNC.

BCManager eReplication: Only supports online upgrade, and does not need to be restarted during the upgrade process

Operating system, after the upgrade is completed, the protection group or recovery plan can be executed after the automatic refresh of resources under the site is completed.

eBackup: Back up by means of always full backup

ManageOne SC. After the upgrade, the backup console cannot be logged in, and the cloud backup service is interrupted

Fusion Sphere OpenStack: During the completion of the upgrade, the host OS will automatically restart, during the restart

Some services cannot access the subnormal phenomenon

File metadata corruption

Super block corruption

The access control module is damaged

The auxiliary distribution module is damaged

TRUE

FALSE

Large page memory is not configured

Affinity settings exist for the virtual machine

The MongoDB service of the management node is abnormal

There are no idle computing resources on the host

TRUE

FALSE

The VDC administrator can view the task execution status and task execution status of the VDC and its subordinate VDCs in the task list.

The creator of the task, the start time of the task, the end time, etc.

The operation administrator can view the task execution status and task creation status of all operation administrators in the task list. Builder, task start time, end time, etc.

The agent administrator can view the task execution status of its agent VDC and its subordinate VDCs in the task list,

The creator of the task, the start time of the task, the end time and other information

The VDC salesperson can view the task execution status and task execution status of this VDC salesperson and its subordinate VDC salespersons.

The creator of the task, the start time of the task, the end time, etc.

True

False

True

False

virtual machineHApolicy is enabled

Virtual machines run on shared storage mounted to all hosts in the cluster

Binding the virtual machine to the host

The virtual machine is created in a specificCNAsAnswer on the host's local disk

business type

OS type

Migration method

Web environment

When running functions such as virus scanning and killing, it only takes up very little computing resources of the user virtual machine, which is used to run antivirus functions

FusionComputeThe virtualized antivirus function consumes a lot of user virtual machine network resources due to its dependence on the network.

FusionComputeVirtualized antivirus eliminates the need to install full antivirus software on user virtual machines

FusionComputeThe virtualized antivirus function performs virus scanning and real-time monitoring through the exchange of host physical memory, with high efficiency and

high speed

After the cloud service data center is built, customers can apply for cloud server disaster recovery services to ensure the business continuity of the cloud server. The whole process does not require administrators to operate in the background

Storage layer replication disaster recovery technology used by server disaster recovery service

In order to provide cloud server disaster recovery services, the back-end storage needs to enable the remote replication function

In order to provide cloud server disaster recovery services, the storage used by the protected cloud server can beAdvancedSAN

virtual machineIPConfiguration error

Physical router failure

Virtual machine firewall configuration error

DVSworking abnormally

Another virtual machine on the current host is taking a memory snapshot

The host "host memory multiplexing" of the cluster where the virtual machine is located is disabled

The guest operating system does not support creating memory snapshots

The virtual machine is bound to a shared disk

purpose of planningVMThe disk space size is expanded or reduced relative to the source end

The partition structure needs to be consistent with the source side

Hosts with lots of small files

Hosts with high disk usage

in dockingFusionComputein the scene,HA,DRS, thermal migration and other advanced features areVRMto fulfill

The creation methods of virtual machine cloud disks are different in two scenarios

nova-computepasslibvirtinterface to completeKVMCreation of virtual machines

in dockingFusionComputeIn the scene, thenova- schedulerto schedule to decide which one to chooseCANHost

True

False

nova-scheduler

nova-conductor

nova-api

nova-compute

Hosts in the cluster are associated with the sameDVS

All hosts are associated with the sameDVS

Hosts in the cluster are connected to the same physical switch

All hosts are connected to the same physical switch

Install Migration Tool --- Create PurposeVM---Data Migration---Data Synchronization

create purposeVM---Install Migration Tool---Data Synchronization---Data Migration

create purposeVM---Install Migration Tool---Data Migration---Data Synchronization

Install Migration Tool --- Create PurposeVM---Data Synchronization---Data Migration

Virtual Group (Full Replication) - Desktop Group Type (Dynamic Pool)

Virtual Group (Linked Clones) - Desktop Group Type (Static Pool)

Virtual Group (Full Copy) - Desktop Group Type (Proprietary)

Virtual Groups (Linked Clones) - Desktop Group Type (Proprietary)

bearFC-SANofFCnetwork

bearer in the production networkIPnetwork

bearIP-SANofIPnetwork

bearFusionStorageofIBInternet

A virtual machine can create multiple snapshots. When a virtual machine is restored using a snapshot, the subsequent snapshots will be lost effect.

All virtual machines on a host can only create one memory snapshot at the same time.

Snapshots can be saved within the virtual machine existing condition.

Snapshots can save both virtual machine settings and data on virtual machine disks.

Create snapshots to protect snapshot point-in-time data

Rollback snapshot restores the data at the snapshot point in time to the original disk

Delete the snapshot, delete the snapshot completely, cancel the data protection at this point in time

Snapshot sharing, share snapshots to specified tenants

Change the status of the disk from available to unavailable

Change the mode of the disk from slave to independent-persistent

C Change the capacity of the disk from 80G to 8G

D Change the configuration mode of the disk from thin to normal

Support heterogeneous servers

CPU resource over-allocation

QOS

Support Windows and Linux virtual machines to increase CPU online

True

False

Backup protocol supports local, via FTP/SFTP to third-party server and OBS

In order to ensure the stable operation of the system, backup and recovery of management data can ensure that the impact on the business is reduced to

lowest

For the business recovery of CloudOpera, the same business can choose multiple backups to restore the actual file information

The system supports both automatic backup and manual backup of data

The school's teaching desktop

HD mapping desktop

Office desks in the library

call center desktop

RAID5 4D+1P

RAID6 4D+2P

RAID10

RAID5 8D+1P

downlink

Uplink

port group

VLAN Pool and Subnet Alarm Definition Rules

Drop disaster recovery configuration.

Modify current disaster recovery configuration.

Add disaster recovery configuration.

Delete current disaster recovery configuration.

A service fails at 7:05, the service is restored at 7:30, the restored service data is the data at 7:00, and the RTO is 30 minutes

A service fails at 7:05, the service is restored at 7:30, the restored service data is the data at 7:00, RPO for 30 minute

A service fails at 7:05, the service is restored at 7:30, the restored service data is the data at 7:00, and the RPO is 5 minutes

A service fails at 705, the service is restored at 7:30, the restored service data is the data at 7-00, and the RTO is 25 minutes answer

If there is only disaster recovery, the production side has wrong operations, or the system upgrade fails, etc., it will be Synchronizing to the disaster recovery side will also cause data or business interruption.

The backup is generally performed periodically. Once the data is damaged, the data will be restored from the recovery time to the last backup time. data in between will be lost.

If there is only backup, the business cannot be recovered quickly, and data recovery takes time. During this time, the business cannot be used. For a certain industry, such business interruption cannot be tolerated.

If there is only disaster recovery, business can be quickly recovered and data can be protected.

No need to install agent on VRM

No need to install the agent on the backup storage

No agent needs to be installed on the protected virtual machine

No need to install an agent on the CNA

TRUE

FLASE

If the scope of management objects for multiple roles is exactly the same, plan the scope of management objects for each role separately.

Plan users with exactly the same responsibilities into the same role, and assign users with different responsibilities from other users

Plan for different roles.

If the application operations required by multiple roles are exactly the same, plan the application operation set separately for each role or not.

Plan the application action set.

If the management scope and application operations of multiple roles are exactly the same, plan common applications for these roles

The operation set but the scope of management objects is planned separately for each role.

TRUE

FALSE

Whether the template virtual machine is configured with an administrator password.

Whether AD and HDC are double-clicked abnormally.

Whether other users have logged in to the virtual machine.

Whether the virtual machine cloudClient client is deleted by mistake.

Resource type: Divide different resource pools according to device model, manufacturer, performance, etc.

Application type: According to the needs of the application, divide different resource pools based on the SLA capability requirements, such as according to the enterprise

Core business applications and general applications are divided into different resource pools

Virtualization type: Divide different resource pools according to different virtualization systems used, or combine virtualization and

Divide non-virtualized resources into different resource pools

Geographical location: Different resource pools can be divided based on latitudes such as DC, site or branch structure

Force shutdown of the virtual machine

Modify the startup mode of the virtual machine

Restore the system disk of the virtual machine

Delete the files in the Tools installation directory

Whether multiple hosts belong to the same cluster depends on whether they use the same shared storage

A cluster is composed of storage and network resources associated with multiple host machines.

Virtual machines can be migrated across clusters

Hosts can be moved between different clusters

Address ticket

Virtual Machine IP and Port

Token

Login ticket

TRUE

FLASE

Routine backup

Before the server replaces the hard disk

Before upgrading the service instance

Before major business adjustments

When creating a Windows destination virtual machine, if it is created through VRM, the disk mode type must be "Subordinate"

If the system disk of the Linux source is in MBR format, the first disk of the destination virtual machine cannot be smaller than 2047GB

It is recommended that the CPU and memory of the destination virtual machine be greater than or equal to the source specifications

When creating the destination virtual machine, you must add a description containing the "Rainbow" field for the destination virtual machine