相关试题
【多选题】
与复床相比，混合床的缺点是___。
A. 出水水质的稳定性差
B. 树脂交换容量利用率低
C. 树脂损耗率大
D. 再生操作复杂
【多选题】
在化学水处理再生系统中，再生剂输送可以采用___。
A. 喷射器
B. 压力法
C. 真空法
D. 泵
【多选题】
离子交换除盐的再生系统由___等几个部分组成。
【多选题】
化学水处理再生排放酸、碱液处理方法为___。
A. 利用石灰水的碱性中和
B. 酸碱中和
C. 强酸树脂处理
D. 弱酸树脂处理
【多选题】
对于除硅要求高的水，在一级复床除盐处理后增设___处理。
A. 二级强碱性阴离子交换
B. 二级强酸性阳离子交换
C. 一级强酸、强碱
D. 混合床
【多选题】
与阴树脂相比，阳树脂具有___的特点。
A. 酸性强
B. 交换容量大
C. 稳定性低
D. 价格低
【多选题】
离子交换除盐系统中设置除碳器的目的在于___。
A. 减轻阴离子交换器负担
B. 延长阴离子交换器工作时间
C. 为阴离子吸附硅酸根创造有利条件
D. 延长阳离子交换的工作时间
【多选题】
逆流再生离子交换器根据___定期进行大反洗。
A. 进出口压差
B. 出水水质
C. 进水水质
D. 运行周期
【多选题】
双层床在除盐水处理工艺上的缺点是___。
A. 强、弱型树脂的交界面相互混杂，弱型易黏结，影响交换能力
B. 周期制水量小
C. 排放废液多
D. 阻力大、反洗较麻烦
【多选题】
混合床阴、阳树脂再生方法有___。
A. 酸、碱分别流经阳、阴树脂层的两步法体内再生
B. 酸、碱同时流经阳、阴树脂层体内再生
C. 阴树脂移出体外再生
D. 阴、阳树脂外移体外再生
【多选题】
离子交换过程中树脂层的变化阶段有三个，下面叙述正确的是___。
A. 交换带的形成阶段；
B. 交换带的交换阶段；
C. 交换带的移动阶段；
D. 交换带的消失阶段。
【多选题】
移动床离子交换的特点是___。
A. 树脂利用率高
B. 再生剂用量高
C. 出水水质稳定
D. 投资少
【多选题】
提升床式浮动床离子交换器工作原理与浮动床基本相同，它的优点是___。
A. 再生简单
B. 体内反洗
C. 可经常启、停，不影响水质
D. 落床方便
【多选题】
运行式浮动床停运落床的方法有___等落床法。
【多选题】
浮动床离子交换器可分为___浮动床。
A. 运行式
B. 连续式
C. 再生式
D. 混合式
【多选题】
分流固定床由于改变进再生剂方式，故其具有___优点。
A. 提高出水水质
B. 提高周期制水量
C. 操作简便
D. 设备简单
【多选题】
原水经钠离子交换后，其出水中___。
A. 硬度大大降低或基本消除
B. 碱度基本不变
C. 碱度改变
D. 溶解固形物稍有增加
【多选题】
活性炭的再生方法为___。
A. 加热再生法
B. 化学再生法
C. 水蒸汽法
D. 生物再生法
【多选题】
水处理中，盐酸计量箱可采用___防腐。
A. 衬胶
B. 铬镍钢
C. 聚氯乙烯
D. 玻璃钢内衬
【多选题】
若再生剂中含有较大量杂质离子，将会造成___。
A. 树脂的再生程度下降
B. 再生后出水水质下降
C. 树脂全交换容量下降
D. 再生水平下降
【多选题】
强酸性阳离子交换树脂可选择___作为再生剂。
【多选题】
硫酸作为再生剂，其优点为___。
A. 价格便宜
B. 再生效果好
C. 易于采取防腐措施
D. 易于清除树脂的铁、污染
【多选题】
盐酸作为再生剂，其缺点是___。
A. 价格高
B. 再生效果差
C. 防腐要求高
D. 不易清除树脂的铁污染
【多选题】
新树脂在使用前经过预处理可达到___的目的。
A. 去除树脂中杂质
B. 提高树脂稳定性
C. 提高树脂工作交换容量
D. 活化树脂
【多选题】
新树脂常含有___等杂质。
A. 重金属离子
B. 低聚物
C. 悬浮物
D. 油脂
【多选题】
强酸型阳树脂在使用中常常会受到___等杂质的污染。
A. 悬浮物
B. 重金属
C. 油
D. 胶体硅
【多选题】
强碱型阴树脂在使用中常常会受到___等杂质的污染。
A. 悬浮物
B. 铁的化合物
C. 胶体硅
D. 有机物
【多选题】
若树脂受到污染，则其发生变化为___。
A. 树脂颜色变深
B. 出水水质下降
C. 树脂结构遭到破坏
D. 交换容量降低
【多选题】
若强碱性阴树脂发生氧化，则其发生变化为___。
A. 颜色变深
B. 强碱性基团降解
C. 对硅的交换容量下降
D. 骨架断链
【多选题】
若阳树脂发生氧化，则其发生变化为___。
A. 颜色变深
B. 体积增大
C. 易碎
D. 体积交换容量降低
【多选题】
与强碱性凝胶型树脂相比较，强酸性凝胶型树脂具有___的特点。
A. 机械强度高
B. 交换容量大
C. 抗有机物污染能力强
D. 耐热性好
【多选题】
离子交换树脂一般被制成球形，具有___等优点。
A. 阻力小
B. 水流均匀
C. 表面积大
D. 磨损小
【多选题】
在一定条件下，当离子交换器树脂层高度增加时，则其___。
A. 树脂工作交换容量增大
B. 树脂层阻力增大
C. 再生频繁
D. 树脂利用率降低
【多选题】
下列关于水泵吸水管路布置的要求中，正确的是___。
A. 所有水泵吸水管上都应设阀门
B. 每台水泵宜设置单独的吸水管
C. 吸水管应尽可能短
D. 吸水管可以上弯越过障碍物
【多选题】
除碳器内部常用的填料有___。
A. 瓷环
B. 多面孔心塑料球
C. 塑料波纹板
D. 钢球
【多选题】
当原水碱度较高（＞2mmol/L）时，则可经___处理，并经脱碳降低碱度。
A. 强酸性H－Na交换
B. 强酸性Na交换
C. 弱酸性H－Na交换
D. 弱酸性Na交换
【多选题】
混合离子交换器应选用___材料做中排支管包套。
【多选题】
当原水___时，做低压锅炉用水，可采用单级钠离子交换软化系统。
A. 含盐量＜500mg/L
B. 硬度＜5mmol/L
C. 碱度＜2mmol/L
D. pH＞7
【多选题】
新的离子交换树脂在保管保存的时候应该___。
A. 保持树脂的水分，防止风干脱水
B. 防止受热和受冻
C. 避免与铁器、氧化剂和油等物质直接接触，防止树脂污染或氧化剂降解
D. 保存在50℃的水中
推荐试题
【多选题】
Which are four attributes of the Active vCenter HA node? (Choose four)___
A. It uses the vCenter HA network to communicate with the Witness node.
B. It constantly replicates vPostgres data with the Witness node.
C. It uses a public IP address for the management interface.
D. It runs the active vCenter Server Appliance instance.
E. It uses the vCenter HA network for replication of data to the Passive node.
F. It provides a quorum to protect against split-brain situations.
【多选题】
Which are two vCenter Server two-factor authentication methods? (Choose two.)___
A. RSA SecurID
B. Smart Card
C. SAML
D. Symantec VIP
【多选题】
An administrator is creating VMkernel adapters on an ESXi 6.5 host and wants to create separate VMkernel adapters for every type of traffic in the default TCP/IP stack. Which three types of traffic can be explicitly enabled on a separate VMkernel adapter? (Choose three.)___
A. Virtual SAN traffic
B. NFS traffic
C. vMotion traffic
D. vSphere HA traffic
E. Fault Tolerance logging traffic
【多选题】
When migrating a Windows vCenter Server 6.0 to the vCenter Server Appliance 6.5, which two will be migrated by default? (Choose two.)___
A. Local Windows OS users and groups
B. Configuration
C. Custom ports
D. FQDN
E. Historical and Performance data
【多选题】
Which three types of Content Libraries exist within vSphere 6.5? (Choose three.)___
A. Remote Content Library
B. Published Content Library
C. Local Content Library
D. Shared Content Library
E. Subscribed Content Library
【多选题】
An administrator cannot enable multi-processor Fault Tolerance (SMP-FT) for a virtual machine. Which are two possible causes for this? (Choose two.)___
A. The virtual machine is running on a vSAN datastore.
B. The Fault Tolerance network is using a 10Gbit uplink.
C. The virtual machine has 6 vCPUs assigned.
D. The virtual machine has a 1TB VMDK attached.
E. The virtual machine has snapshots present.
【多选题】
Which two statements are true for Predictive DRS? (Choose two.)___
A. It balances resource utilization for virtual machines with unpredictable utilization patterns.
B. It integrates DRS with vRealize Operations Manager to balance workloads for virtual machines before resource utilization spikes occur.
C. It balances resource utilization based on a threshold's algorithm that runs each night.
D. It determines the best placement and balance of virtual machines based on a threshold's algorithm that runs each night in vCenter Server 6.5 Database.
【多选题】
Which two situations could cause a virtual machine to appear with (orphaned) appended to its name? (Choose two.)___
A. if a host failover is unsuccessful
B. if a virtual machine was removed from vCenter Server's inventory
C. if a virtual machine was deployed from template, and the template has been deleted
D. if a virtual machine is unregistered directly on the host
【多选题】
Which three requirements are needed to apply RAID 5 or RAID 6 erasure coding on a vSAN 6.2 or 6.5 object? (Choose three.)___
A. on Disk Format 3.0
B. Hybrid vSAN
C. All Flash vSAN
D. vSAN Advanced License
E. Stretched Cluster Configurations
【多选题】
An administrator sees the following error in the log files: Which two events could be the source of the error message? (Choose two.)___
A. vCenter Server failure
B. VXLAN failure
C. Disk array failure
D. Network failure
E. ESXi host failure
【多选题】
An administrator is attempting to access an ESXi host via the DCUI but is unable to do so. Which could be two possible causes? (Choose two.)___
A. The host in Qhas no out-of-band management capability (i.e. iLO/iDRAC).
B. The SSH service is disabled on the host.
C. Strict lockdown mode is enabled on the host.
D. Normal lockdown mode is enabled and the administrator is a member of the
E. xception User list.
【多选题】
Which two permissions are required to migrate a virtual machine with Storage vMotion? (Choose two.)___
A. Network > Move Network
B. Virtual Machine > Inventory > Move
C. Resource > Migrate powered on virtual machine
D. Datastore > Allocate Space
【多选题】
Which are three supported storage requirements for vCenter Server HA? (Choose three.)___
A. NFS
B. RDM
C. vSAN
D. VMFS
E. JBOD
【多选题】
Which are the two network requirements for a VMware vSAN 6.5 cluster? (Choose two.)___
A. Multicast must be enabled on the physical switches and routers that handle vSAN traffic.
B. vSAN requires IPv6 only.
C. All hosts must have a dedicated 40GbE NIC.
D. The vSAN network supported IPv4 or IPv6.
E. vSAN requires IPv4 only.
【多选题】
Which three prerequisites must be in place prior to enabling secure boot for a virtual machine? (Choose three.)___
A. VirtualMachine.Config.Settings privileges
B. an encrypted USB drive
C. Virtual Hardware version 13 or later
D. Virtual Hardware version 12 or later
E. EFI firmware
【多选题】
A user is given the "Virtual machine user (sample)" role in a vSphere 6.x environment. Which three permissions would the user be able to perform? (Choose three.)___
A. Reset a virtual machine.
B. Power on a virtual machine.
C. Move a host into a cluster.
D. Configure CD media.
E. Migrate a virtual machine with Storage vMotion.
【多选题】
Which three are supported upgrade processes for ESXi host? (Choose three.)___
A. using vSphere Auto Deploy
B. using a TFTP server
C. using Update Manager
D. using an
E. SXCLI command
【多选题】
When enabling Storage DRS on a datastore cluster, which three components are enabled as a result? (Choose three.)___
A. Space load balancing among datastore within the datastore cluster.
B. Initial placement for virtual disks based on space and I/O workload.
C. I/O load balancing among datastores within the datastore cluster.
D. Queue Depth alerting on disks within the datastore cluster.
E. Data de-duplication within the datastore cluster.
【多选题】
What are two features introduced in Network I/O Control version 3? (Choose two.)___
A. Bandwidth reservation per traffic type
B. Network resource pools
C. CoS tagging
D. Bandwidth guarantee to virtual machines
【多选题】
Which two correct virtual machine advanced configuration parameters will accomplish this? (Choose two.)___
A. isolation.device.edit.disable = “FALSE”
B. isolation.device.edit.disable = “TRUE”
C. isolation.device.connectable.disable = “FALSE”
D. isolation.device.connectable.disable = “TRUE”
【多选题】
Which three statements are correct regarding booting an ESXi Host from Fibre Channel SAN? (Choose three.)___
A. Direct connect topology is supported.
B. Each host must have its own boot LUN.
C. ESXi hosts do not require local storage.
D. Multipathing to a boot LUN on an active-passive array is supported.
E. Hosts can share one common boot LUN.
【多选题】
Which two tasks should a vSphere administrator perform if the vmkernel log reports VMFS metadata errors? (Choose two.)___
A. contact VMware technical support
B. reformat the datastore
C. check the device with VOMA
D. ignore the messages
【多选题】
Which two statements are true for a vCenterServer user account that is used for vSphere Data Protection (VDP)? (Choose two.)___
A. The user account must be assigned with Administrator role.
B. The password for the user account cannot contain spaces.
C. The user account should be created in the Single Sign-On domain
D. The user account cannot inherit required permissions from a group role.
【多选题】
Which three storage protocols are supported by Virtual Volumes? (Choose three.)___
A. FCIP
B. FCoE
C. iSCSI
D. NFS v3
E. NFS v4
【多选题】
A vSphere administrator observes a CPU spike on one of the web servers (view the Exhibit.) Which two statements can describe the cause of this activity? (Choose two.)___
A. The network packet size is too large.
B. VMware Tools is not installed.
C. Disk latency is present on the datastore.
D. The network packet size is too small.
【多选题】
Which three operations can cause VMFS metadata updates? (Choose three.)___
A. Restarting a VM using the guest OS.
B. Launching a VM console.
C. Migrating a VM with vMotion.
D. Powering a VM on or off.
E. Expanding a VMFS datastore.
【多选题】
*What two services run on all nodes in a vCenter Server HA cluster? (Choose two.)___
A. vmware-vmon
B. vmware-vpostgres
C. vmare-rbd-watchdog
D. vmware-vcha
【多选题】
Which two statements are true regarding Auto Deploy in version 6.5? (Choose two.)___
A. Auto Deploy can be configured and managed via PowerCLI.
B. Auto Deploy can be configured and managed via the vSphere Client.
C. Auto
D. eploy can be configured and managed via the vSphere Web Client.
【多选题】
What three options can improve network performance for a virtual machine? (Choose three.)___
A. MLD
B. TSO
C. NetFlow
D. LRO
E. SR-IOV
【多选题】
Which two storage technologies are supported for MSCS? (Choose two.)___
A. NFS
B. VAAI
C. iSCSI
D. FC
【多选题】
When upgrading a VMware vSAN cluster to version 6.5, which two tasks must be completed to comply with upgrade requirements and VMware-recommended best practices? (Choose two.)___
A. Use RVC to upgrade the hosts.
B. Use the latest available ESXi version.
C. Back up all VMs.
D. Use only the “Full data migration” maintenance mode option.
【多选题】
What two enhancements are in VMFS6 but not in VMFS5? (Choose two.)___
A. Support for 4k native disks
B. Support for 512e disks
C. GPT storage device partitioning
D. Automatic space reclamation
【多选题】
Which two statements describe why a vSphere DRS cluster would report load imbalance? (Choose two.)___
A. The configured migration threshold is too high.
B. The configured migration threshold is too low.
C. DRS is configured for Partially Automated.
D. Enhanced vMotion Compatibility (EVC) is enabled.
【多选题】
A vSphere Administrator must ensure that vCenter Server service is running in a domain user account rather than Local System Account. To accomplish this, the user account should have which two permissions? (Choose two.)___
A. Log on as a service.
B. Act as part of the operating system.
C. Log on as a batch job.
D. Log on locally.
【多选题】
A virtual machine fails to power on after being deployed from a template. What two remediation steps could correct this issue? (Choose two.)___
A. Increase CPU reservation
B. Decrease memory reservation
C. Increase memory reservation
D. Increase datastore capacity
E. Decrease CPU reservation
【多选题】
Which three directories are available under the vcsa-cli-installer folder of the vCenter Server Appliance installation media? (Choose three.)___
A. \mac
B. \ovftool
C. \migration-assistant
D. \win32
E. \lin64
【多选题】
What are three considerations when booting ESXihost from SAN software FCoE? (Choose three.)___
A. The VMware_FCoE_vSwitch that the installer automatically created cannot be changed.
B. Boot LUN cannot be shared with other hosts even on shared storage.
C. Multipathing is not supported at pre-boot.
D. Software FCoE boot configuration cannot be changed from within
E. SXi.
【多选题】
Which two choices are applicable to vSphere Availability? (Choose two.)___
A. Heartbeat Datastores
B. VM Startup/Shutdoown
C. Power Management
D. Admission Control
【多选题】
A user is a member of groups A and B. -VM10 and VM20 are in VM Folder. -Group A is assigned permission “Read-only” on VM Folder. What two configurations will allow the user to edit the settings for only VM10? (Choose two.)___
A. Assign group B permission “virtual machine power user” to VM10.
B. Assign group B permission “virtual machine console user” to VM10.
C. Assign group A permission “virtual machine console user” to VM10.
D. Assign group A permission “virtual machine power user” to VM10.
【多选题】
Which two new vSphere 6.5 features enable an Administrator to locate configuration options when creating or editing host profiles more easily than in previous versions? (Choose two.)___
A. Add the configuration option to favorites.
B. Navigate the option tree.
C. Search for the configuration option.
D. Copy the configuration option from a different profile.
