【单选题】
线路截断阀维护过程中，为防止阀门误动作，应（）___
A. 投用旁路
B. 进行可燃气体检测
C. 阀腔放空
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A
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相关试题
【单选题】
阀门维护前应确认阀门已退出运行，悬挂禁止操作牌，带执行机构的阀门应将阀门（ ）___
A. 切换至就地STOP状态并切断动力电源
B. 上锁
C. 切换至远控状态并切断动力电源
D. 切换至就地STOP状态
【单选题】
发电机检修前，依次关闭的顺序为（ ）；___
A. 蓄电池充电器、断开充电器与蓄电池连接、断开蓄电池与发电机连接
B. 蓄电池充电器、断开蓄电池与发电机连接、断开充电器与蓄电池连接
C. 断开蓄电池与发电机连接、蓄电池充电器、断开充电器与蓄电池连接
D. 断开充电器与蓄电池连接、蓄电池充电器、断开蓄电池与发电机连接
【单选题】
发电机检修完成后，依次恢复的顺序为（）；___
A. 开启蓄电池充电器、充电器与蓄电池连接、蓄电池与发电机连接
B. 蓄电池与发电机连接、充电器与蓄电池连接、开启蓄电池充电器
C. 开启蓄电池充电器、蓄电池与发电机连接、充电器与蓄电池连接
D. 蓄电池与发电机连接、开启蓄电池充电器、充电器与蓄电池连接
【单选题】
变压器检修前应启动（）供电，确认发电机运行平稳、正常带载后再断开变压器（）开关。___
A. UPS 低压侧
B. UPS 高压侧
C. 发电机 低压侧
D. 发电机 高压侧
【单选题】
高压电气试验中，高压设备与其他设备断点符合安全距离要求，试验区范围内向外装设警示围栏，悬挂“（ ）”标示牌。___
A. 止步，高压危险
B. 禁止合闸，有人工作
C. 禁止操作，有人工作
D. 前方检修，请勿靠近
【单选题】
带压仪表设备或仪表管线拆装作业前，应关闭（ ）并通过泄压孔泄压至零，拆装作业时作业人员应侧身站位，不得正面面对泄压口、仪表管线连接处等危险部位。___
A. 一次取压阀
B. 二次取压阀
C. 放空阀
D. 排污阀
【单选题】
高压电气试验中下列说法错误的是：（ ）___
A. 在同一电气连接部分进行高压试验前，必须暂停其他检修工作，试验结束、设备未充分放电前不得许可其他工作
B. 被试设备两端不在同一地点的，试验时两端必须有人监护并采取防范措施
C. 试验设备应在检验合格有效期内，采用专用的试验仪器和设备
D. 试验中断、变更接线或试验结束时应观察15分钟后断开试验电源，将被试设备放电并短路接地
【单选题】
中控系统维护检修时，下列说法错误的是：（ ）___
A. 中控系统的所有操作系统或设备宜采用强密码方案进行管理
B. 经站长允许，可在中控系统的服务器、工程师站、操作员站、交换机上进行软件安装、文件修改、文件复制转移等操作
C. 除维护和特殊检修作业外，服务器、工程师站、操作员站应屏蔽软盘、U盘等外部接口
D. 存储介质使用前应定使用专用杀毒工具进行病毒查杀
【单选题】
站控系统检修维护中，下列说法正确的是（ ）。___
A. 经站长许可，就可在站控操作员站上进行软件安装、文件修改、文件复制转移等操作
B. 站控电脑外部接口可供值班人员日常手机充电使用
C. 维护作业前，应将全站电动执行机构切换至远控状态
D. 维护作业前，应关闭站内电动ESD紧急放空阀前手动球阀
【单选题】
支路切换、计量比对等操作时严格执行 （ ）的原则，待备用支路投运并稳定运行后在运支路方可退出运行或关闭原在运阀门___
A. 先开后关
B. 先关后开
C. 边开边关
D. 不开不关
【单选题】
挖掘作业施工现场应根据需要设置护栏、盖板和警告、（ ） ，夜间应悬挂红灯警示；施工结束后要及时回填，并恢复地面设施。___
A. 警示标志
B. 管道标识
C. 彩旗
D. 应急工具
【单选题】
巡线员应定期对线路进行巡护，日常巡线，每日（ ）次；徒步巡线每两周（ ）次；台风、暴雨等恶劣天气取消当日巡线，恶劣天气次日重点巡查山区线路是否存在冲沟、露管、悬空等现象；___
A. 1,1
B. 1,2
C. 2,1
D. 2,2
【单选题】
巡线员巡线时宜沿管道路由走向到达所设置的必到点，在每一个巡线必到点至少停留（ ），巡查管道周边环境是否存在异常变化；___
A. 5分钟
B. 2分钟
C. 20秒
D. 30秒
【单选题】
巡线员在山区和草木茂盛地段徒步巡线时，应穿高邦鞋，穿着长衣长裤和佩戴帽子，扣紧衣领袖口裤口，必要时在裸露部位涂抹防虫药剂，并控制好步行速度，防止（ ）和被蛇虫咬伤。___
A. 滑倒
B. 擦伤
C. 滑倒摔伤
D. 头部损伤
【单选题】
巡线员在河流、水塘、湿地等水网地段巡线时，应注意行走路况，如需涉水巡查时，应先探明水深，防止滑倒、扭伤、淹溺；穿越公路、铁路时，应遵守交通规则，防止（ ）。___
A. 人员受伤
B. 人员伤害
C. 车辆损伤
D. 车辆伤害
【单选题】
在高山峻岭、临水临崖等危险路段巡线时，原则上应安排（ ）人巡线，当人员调配有困难时，应与单人巡线员建立定时通话联络机制，定时联络频率不应大于（ ）次/半小时。___
A. 1,2
B. 2,1
C. 2,2
D. 1,1
【单选题】
汛前应重点检查穿跨越河流管道有无裸露、（ ）、（ ） 、剥蚀损坏等情况，水工保护有无裂纹、倾斜、塌方、沉降、镂空等现象；___
A. 悬空、冲刷
B. 上浮、冲刷
C. 悬空、上浮
D. 上浮、防腐层破损
【单选题】
台风、暴雨、洪水等灾害性天气过后，应重点检查（ ）是否存在失稳、裸露、悬空、移位、冲刷、剥蚀损坏等情况，水工保护有无淘蚀、冲沟、坍塌等现象。___
A. 直埋管道
B. 隧道管道
C. 穿越管道
D. 架空管道
【单选题】
发现管道保护范围内的第三方施工时，立即制止施工，测量管道、光缆走向及埋深，设立临时警示标示，发放（ ），开展安全交底等，制止施工无效时可以拨打公安110报警。___
A. 施工作业告知单
B. 安全施工告知单
C. 安全告知单
D. 告知单
【单选题】
发现管道保护范围内的第三方施工时，应了解并查明施工影响区域、施工进度、施工期限、建设相关方等信息，核对管道及光缆位置及埋深、（ ）、与管道及光缆的垂直间距和水平间距等。___
A. 管道敷设方式
B. 管道材质
C. 管道周边信息
D. 管道直径
【单选题】
当一级地区旱地管道埋深小于（ ）米以及二级、三级、四级地区旱地管道埋深小于0.8米、水田地区管道埋深小于（ ）米时，必须对该段管道采用盖板、箱涵等保护措施。___
A. 0.8,0.8
B. 0.8,0.6
C. 0.6,0.6
D. 0.6,0.8
推荐试题
【单选题】
Assuming a mirrored (RAID-1) object configuration, how many hosts must contribute storage in a non-stretched VMware vSAN cluster to satisfy the “Number of failures to tolerate” policy option?“n” is the desired “Number of failures to tolerate” value for all options.___
A. 2n+2
B. 2n
C. 2n+1
D. 3n
【单选题】
An administrator must change the statistics level for short-term performance monitoring and wants to collect metrics for all counters, excluding minimum and maximum rollup values. What would be the statistics level?___
A. Level 3
B. Level 1
C. Level 2
D. Level 4
【单选题】
In a vSphere environment, two resource pools are created as shown in the Exhibit. Each VM is configured with 1 GB of memory. When the administrator tried to power on VM3, the operation failed. What action in the resource pool settings will allow VM3 to power on successfully?___
A. Deselect Expandable Memory Reservation
B. Increase Memory Reservation
C. Deselect Expandable CPU Reservation
D. Increase the CPU Reservation
【单选题】
Which network is used by vSphere HA when VMware vSAN is enabled?___
A. Management network
B. vSphere Replication network
C. vMotion network
D. VSAN network
【单选题】
Which statement is correct when migrating from a Windows vCenter Server to the vCenter Server Appliance 6.5?___
A. Migration deployments do not migrate local OS users from the source vCenter Server.
B. Migration deployments support DHCP on the source vCenter Server.
C. Migration deployments allow the source vCenter Server to remain powered on afterwards.
D. Migration deployments support custom ports for all services on the source vCenter Server.
【单选题】
How can failback of a recovered virtual machine in vSphere Replication be performed?___
A. No action required, because failback is automatically performed to the source site.
B. Configure a new replication in the reverse direction at the target site.
C. Disable or Stop the virtual machine replication on the source site.
D. Power off and unregister the virtual machine on the target site.
【单选题】
After upgrading the vSphere infrastructure and VMware Tools to version 6.5, the “Upgrade VM Compatibility” option is grayed out in the vSphere Web Client. (See Exhibit.) What must the administrator do to enable the VM compatibility upgrade?___
A. VMware Tools should be upgraded last.
B. Restart the ESXi server.
C. Uninstall VMware Tools.
D. Power off the virtual machine.
【单选题】
What availability mode does vCenter HA provide?___
A. Active-Passive
B. Active-Standby
C. Active-Active
D. Load-balanced
【单选题】
In which scenario will vSphere DRS balance resources when set to Fully Automated?___
A. Hosts with only shared storage
B. Hosts are part of a vSphere HA cluster
C. Power Management is set to Balanced on hosts
D. Hosts with shared or non-shared storage
【单选题】
What VMware technology can be used to move physical servers to the vSphere infrastructure?___
A. VMware vMotion
B. VMware Converter
C. VMware vCenter Server
D. OVF transport
【单选题】
Upgrading vCenter Server with Microsoft SQL database fails with the following error message: The DB User entered does not have the required permissions needed to install and configure vCenter Server with the selected DB. Please correct the following error(s): %sWhat could cause this error?___
A. incorrect ports open on SQL Server
B. incorrect database on the SQL server
C. incorrect compatibility mode on the SQL server
D. incorrect permission on SQL Server database
【单选题】
What is a potential downside of having more than four paths per datastore?___
A. limits the storage protocols
B. increases storage latency for VM
C. limits the path selection policies
D. limits the number of LUNs per host
【单选题】
Which feature facilitates the sharing of templates via vCenter Server?___
A. Content Library
B. OVF
C. folders
D. vApp
【单选题】
A vSphere Administrator is in the process of configuring replication for a virtual machine, but is not able to select the Recovery Point Objective (RPO) value of 5 minutes. Which statement could explain why the RPO value cannot be lower than 15 minutes?___
A. The OS quiescing option is selected for Replication options.
B. The virtual machine hardware version is not compatible.
C. The target and source sites use different types of datastores.
D. The target and source sites are not using VMFS 6.0 datastore.
【单选题】
What advanced parameter defines a custom isolation IP address for a vSphere HA cluster?___
A. das.usedefaultisolationaddress
B. das.isolationshutdowntimeout
C. fdm.isolationpolicydelaysec
D. das.isolationaddress
【单选题】
Which method is supported for backing up the virtual machine that contains vCenter Server?___
A. differential
B. incremental
C. full image
D. individual disks
【单选题】
A vSphere Administrator must ensure that a user is able to view and manage the system configuration in vSphere Web Client. In the vCenter Single Sign-On domain, which group should the user be a part of?___
A. SystemConfiguration.BashShellAdministrators
B. ComponentManager. Administrators
C. Administrators
D. SystemConfiguration.Administrators
【单选题】
What is the minimum number of hosts that must contribute capacity to a non-ROBO single site VMware vSAN cluster?___
A. 1
B. 64
C. 3
D. 2
【单选题】
Which guest operating system supports PVRDMA?___
A. Windows (32-Bit)
B. Linux (32-Bit)
C. Windows (64-Bit)
D. Linux (64-Bit)
【单选题】
What is the correct way to replace the certificate on an existing vCenter Server that is part of a vCenter HA configuration?___
A. Put the vCenter HA in Maintenance mode, replace the certificate, exit Maintenance mode.
B. Shut down Passive and Witness nodes and replace the certificate on the Active node.
C. Remove the Passive and Witness nodes, replace the certificate, reconfigure the cluster.
D. Replace the certificate while all nodes are participating in the cluster.
【单选题】
The vSphere Data Protection performance analysis results in the “Conditionally Passed” status. What can cause this condition?___
A. The results did not meet the minimum performance expectations.
B. The read, write, and seek tests were successful.
C. The read and write tests were successful but the seek test failed.
D. The read and write tests were successful but the seek test skipped.
【单选题】
A vSphere Administrator wants to reserve 0.5 Gbps for virtual machines on each uplink on a disturbed switch that has 10 uplinks. What is the quota that should be reserved for the network resource pool?___
A. 10 Gbps
B. 5 Gbps
C. 100 Gbps
D. 0.5 Gbps
【单选题】
A vSphere administrator manages a cluster which includes critical and non-critical virtual machines. The cluster requires different permissions for contractors and non-contractors. How can the administrator exclude the contractor group from some of the critical VMs?___
A. Apply permission for both contractors and non-contractors on the cluster level.
B. Apply permission for both contractors and non-contractors on the cluster level. Remove permission on the critical VMs for contractors.
C. Remove permission for contractors on the cluster level. Apply permission on the critical VMs for noncontractors.
D. Apply permission for both contractors and non-contractors on the VMs. Remove permission on the critical VMs for contractors.
【单选题】
In an ESXi 6.5 cluster only "NFS datastore has running or registered virtual machines" returns. A vSphere HA cluster with four hosts has admission control configured to tolerate one host failure. Which statement is true if a fifth host is added?___
A. CPU and Memory capacity will be set to 50%.
B. CPU and Memory capacity will be set to 30%.
C. CPU and Memory capacity will be set to 25%.
D. CPU and Memory capacity will be set to 20%.
【单选题】
Which command can be run to troubleshoot connectivity problems with vmkernal network interfaces?___
A. esxcli network
B. vmkping
C. net-status
D. vicfg-vmknic
【单选题】
What counter should an administrator check to determine if a virtual machine is ballooning?___
A. swapinRate
B. vmmemctltarget
C. swapped
D. vmmemctl
【单选题】
By default, how often is the vCenter vpx user password automatically changed?___
A. 15 days
B. 60 days
C. 30 days
D. 45 days
【单选题】
Which metric in the Exhibit would identify high latency for a virtual machine operating system?___
A. QAVG/cmd
B. KAVG/cmd
C. DAVG/cmd
D. GAVG/cmd
【单选题】
What VM Monitoring setting would ensure that the failure interval for a virtual machine is defined as 120 seconds?___
A. High
B. Normal
C. Low
D. Medium
【单选题】
The business managers have asked the IT administrator to ensure configuration compliance in the vSphere infrastructure. The IT administrator wants to use Host Profiles to accomplish this, but is unable to do so. Why is the administrator unable to use Host Profiles?___
A. The infrastructure uses a vSphere Standard license.
B. The infrastructure has servers with various CPU families.
C. The user has only the “Administrator” role.
D. Host Profiles apply only to storage settings.
【单选题】
What is the result of a “Consolidate” action on a virtual machine?___
A. All snapshots on the virtual machines will be deleted.
B. The virtual machine will be reverted to its last snapshot.
C. Redundant delta disks will be combined and deleted.
D. A new snapshot with memory state will be created.
【单选题】
A Telco customer is implementing NFV using vSphere as the virtualization platform. Which feature can help achieve a high packet rate with lower CPU consumption?___
A. Network I/O Control
B. SplitRX
C. ERSPAN
D. LACP
【单选题】
What is the VMware-recommended best practice for Fibre Channel zoning?___
A. soft zoning
B. single-initiator-multiple-target zoning
C. single-initiator zoning
D. single-initiator-single-target zoning
【单选题】
How can a vSphere administrator ensure that a set of virtual machines run on different hosts in a DRS cluster?___
A. Use a VM-Host affinity rule.
B. Add the VMs to a vApp.
C. Use a VM-VM affinity rule.
D. Place the VMs in different folders.
【单选题】
vCenter Server Appliance Instance can be backed up using which Client Interface?___
A. vSphere Client Interface
B. vSphere Web Client Interface
C. VMware Host Client Interface
D. Virtual Appliance Management Interface
【单选题】
What tool can capture network traffic at the uplinks, or vSwitch, or virtual port levels?___
A. tcpdump-uw
B. wireshark
C. pktcap-uw
D. pcap
【单选题】
Which storage feature always requires the use of third-party software on ESXi?___
A. Hardware Acceleration for NAS devices
B. VVOL
C. Hardware Acceleration for Block
D. evices
【单选题】
An ESXi host's VMCA-Signed certificate has expired. How can the certificate be renewed?___
A. In the vSphere Web Client, browse to the host in question. Click the Manage tab and select settings. Select System and click Certificate, then click the Renew button.
B. In the vSphere Web Client, browse to the host in question. Click the Manage tab and select settings. Select System and click Certificate, then click the Refresh CA Certificates button.
C. Run the command /sbin/generate-certificates on the affected host.
D. Disconnect the host from vCenter Server and reconnect it.
【单选题】
Which is the correct order for upgrading vSphere components?___
A. vCenter Server, ESXi hosts, VMware Tools, Virtual Machine hardware
B. VMware Tools, Virtual Machine hardware, ESXi hosts, vCenter Server
C. vCenter Server, Virtual Machine hardware, VMware tools, ESXi hosts
D. ESXi hosts, vCenter Server, Virtual Machine hardware, VMware Tools
【单选题】
Which iSCSI initiator type can be used with any network interface card?___
A. Software iSCSI initiator
B. Software FCoE adapter
C. Hardware Independent iSCSI initiator
D. Hardware Dependent iSCSI initiator
