相关试题
【单选题】
对于二次回路的标号,按线的性质用途进行编号叫___。
A. 相对编号法
B. 绝对编号法
C. 回路编号法
【单选题】
流过导体单位截面积的电流叫电流密度,其单位为___。
A. 安培
B. 安培/平方米
C. 安培/平方毫米
【单选题】
临时遮栏设置在可能发生人体接近带电体的巡视通道和检修设备的周围。___
【单选题】
对于接线方式较为简单的小容量变电所,操作电源常常采用___。
A. 直流操作电源
B. 交流操作电源
C. 逆变操作电源
【单选题】
作为电气工作者,员工必须熟知本工种的()和施工现场的安全生产制度,不违章作业。___
A. 生产安排
B. 安全操作规程
C. 工作时间
【单选题】
电气设备有三种工作状态,即运行备用___。
【单选题】
单选题电压质量包含()电压允许波动与闪变三相电压允许不平衡度等内容。___
A. 电流允许偏差
B. 电压允许偏差
C. 电阻允许偏差
【单选题】
判断题电气设备发生火灾时,严禁使用能导电的灭火剂进行带电灭火。___
【单选题】
单选题用型万用表的档测量/的电压互感器二次绕组电压时,指针盘摆度约为满刻度的/,由此可知此高压设备电压约为___。
【单选题】
单选题交流高压真空接触器适用于交流系统中___的场合。
A. 需要频繁操作
B. 不需要频繁操作
C. 操作机率很低
【单选题】
判断题因真空断路器的触头设置在真空灭弧室内,所以对触头材料的含气量高低没有要求。___
【单选题】
6.单选题电气设备有三种工作状态,即运行___检修状态。
【单选题】
判断题倒闸操作每一项操作结束后,操作人应认真检查被操作的设备状态,被操作的设备状态应与操作项目的要求相符合,并处于良好状态。___
【单选题】
判断题在防雷装置中用以接受雷云放电的金属导体称为接闪器。___
【单选题】
判断题电力线路的作用是输送和分配电能。___
【单选题】
判断题由于检修工作需要,可将六氟化硫()断路器打开后,将六氟化硫()气体排入大气中。___
【单选题】
判断题操作票中,一项操作任务需要书写多页时,须注明转接页号,且页号相连。___
【单选题】
判断题电力系统过电压分成两大类:外部过电压和内部过电压。___
【单选题】
判断题导体处于变化的磁场中时,导体内会产生感应电动势。___
【单选题】
判断题电弧电流的本质是离子导电。___
【单选题】
判断题变压器是根据电磁感应原理工作的。11.判断题操作票中,一项操作任务需要书写多页时,须注明转接页号,且页号相连。___
【单选题】
判断题真空灭弧室中的动静触头断开过程中,产生电弧的主要因素是依靠触头产生的金属蒸气使触头间产生电弧。___
【单选题】
单选题继电保护的()是指保护快速切除故障的性能。___
【单选题】
判断题弹簧储能操动机构的合闸弹簧可采用电动机或人力使合闸弹簧储能。___
【单选题】
单选题避雷线的作用原理与避雷针相同,保护范围___。
【单选题】
判断题在电路中,电能的单位常用单位是？,并且,？的电能俗称为度电。___
【单选题】
单选题验电时应在检修设备___各相分别验电。
【单选题】
判断题在室内高压设备上工作,应在工作地点两旁及对面运行设备间隔的遮栏(围栏)上和禁止通行的过道遮栏(围栏)上悬挂“止步,高压危险!”的标示牌。___
【单选题】
判断题在电路中,将两个及以上的电阻,一个接一个的顺序联接起来,称为电阻的串联。___
【单选题】
判断题电能质量包括电流频率和波形的质量。___
【单选题】
判断题当人体同时接触带电设备或线路中的两相导体时,电流从一相导体经人体流入另一相导体,构成闭合回路的触电事故称为两相触电。___
【单选题】
判断题部分停电的工作,安全距离小于规定距离以内的未停电设备,应装设临时遮栏。___
【单选题】
判断题二次线圈有无开路,接地线是否良好,有无松动和断裂现象,是电流互感器巡视检查项目之一。___
【单选题】
判断题电流互感器运行前检查外壳及二次侧应接地正确良好,接地线连接应坚固可靠。___
【单选题】
判断题新安装或大修后的断路器,投入运行前必须验收合格才能施加运行电压。___
【单选题】
单选题从区域变电所到用户变电所或城乡电力变压器之间的线路,是用于分配电能的,称为___。
【单选题】
判断题在电阻串联的电路中,电路的总功率等于各串联电阻的功率之和。___
【单选题】
判断题触头断开后,触头之间如果电弧已熄灭,则电路实际上没有被切断。___
【单选题】
单选题运行过程中易发生过负荷和需要防止起动或自起动时间过长的电动机应装设___。
A. 过负荷保护
B. 低电压保护
C. 失步保护
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用经纬仪和平行光管测量机床转台分度误差时，应用专用心轴配装在转台中心孔中将经纬仪和心轴紧固联接在一起
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【判断题】
若自准直仪上读数鼓轮每格角值分度值为1"，则其线值分度值可用0.05mm/m表示
【判断题】
所有的紫色酒精，在 1 米内不准点有明火，不准放在暖气片上
【判断题】
固定式装配适用于单件和小批量模具的装配，以及装配精度要求较高，需要调整的部位较多的装配
【判断题】
我国对企业发生的事故，坚持“四不放过”原则进行处理
【判断题】
在机械设备中，凸轮表面误差将会引起扭转振动
【单选题】
What happens to the status of users already logged into ESXi Shell when a vSphere administrator enables lockdown mode?___
A. Users remain logged in and can run commands, except to disable lockdown mode.
B. Users remain logged in and can run commands, including disabling lockdown mode.
C. Users are immediately logged out of ESXi Shell.
D. Users are logged out after a timeout specified by the vSphere administrator.
【单选题】
What is the effective vSphere licensing level during the 60 day evaluation period?___
A. vSphere Foundation Essentials Plus
B. vSphere Standard
C. vSphere Enterprise
D. vSphere
E. nterprise Plus
【单选题】
To comply with security requirements, an administrator with a vCenter Server Appliance needs to force logoff of the vSphere web client after 10 minutes of inactivity.What should the administrator do to meet the requirement?___
A. Edit: /var/lib/vmware/vsphere-client/webclient.properties, modify session.timeout=10
B. Edit: /opt/vmware/vsphere-client/webclient.properties, modify session.timeout=600
C. Edit: /var/lib/vmware/vsphere-client/webclient.properties modify session.timeout=600
D. Edit: /opt/vmware/vsphere-client/webclient.properties, modify session.timeout=10
【单选题】
An administrator enables High Availability (HA) on a Virtual SAN cluster.Which network is used for HA Network Heatbeat configuration?___
A. The Management network.
B. The vMotion network.
C. The Virtual SAN network.
D. The Provisioning Traffic network.
【单选题】
A user wants to monitor a business-critical virtual machine to ensure that it doesn't run out of resources. What metric could be monitored in vRealize Operations to address this concern?___
A. Time Remaining badge
B. Compliance badge
C. Reclaimable Waste badge
D. Density badge
【单选题】
An administrator has recently installed a new ESXi 6.x Host, and during the configuration notices sporadic network problems. To check whether the issue occurred sometime during the configuration, the administrator would like to reset the system.How can this be accomplished in the shortest amount of time?___
A. Run the ESXi installer again and reinstall the host.
B. Select the Reset System Configuration option from the vSphere Client when connected directly to the host.
C. From the
D. irect Console User Interface, select Reset System Configuration.
【单选题】
A vApp is running out of compute resources when overall activity is high within the resource pool. At other times, everything is fine.What should be done to resolve this issue?___
A. Increase the size of the resource pool Shares.
B. Set the vApp's CPU and Memory Reservation Type to Expandable.
C. Set the vApp's CPU and Memory Limit to Unlimited.
D. Create a new resource pool with the existing hardware configuration.
【单选题】
A virtual machine has been renamed and an administrator is unable to find files with the new virtual machine name in the datastore.What is the reason for this?___
A. The names of the files on the datastore do not change.
B. The names of the files on the datastore have been corrupted.
C. The virtual machine needs to be re-added to the inventory.
D. The Distributed Resource Scheduler moved the virtual machine to another host.
【单选题】
An administrator has configured network connectivity for a new virtual machine, as shown in the Exhibit.What will occur with the network traffic of this virtual machine when communicating externally from vSwitch1?___
A. The virtual machine will communicate on both uplinks
B. The virtual machine will only communicate on vmnic1
C. The virtual machine will only communicate on vmnic2
D. The virtual machine will fail to communicate externally
【单选题】
An administrator is unable to create the first group in a new vRealize Operations environment. What is the likely cause of the problem?___
A. There are no group types defined.
B. The group is not defined in SSO.
C. There are more than 32 group types defined.
D. The description for the group is not provided.
【单选题】
A new vApp was built and tested in the corporate headquarters datacenter running vSphere 6.x. What condition would explain why the virtual machine is failing to boot in an offsite datacenter running on vSphere 5.5?___
A. The virtual machine was built with the default hardware version.
B. The VMFS 5 datastore is not compatible with virtual machines configured with vSphere 6.x.
C. a
D. RS 5.5 cluster cannot run virtual machines configured with vSphere 6.x.
【单选题】
An administrator is evaluating whether to deploy vCenter Server on a Windows server or on a vCenter Server appliance. The administrator has the following requirements: <A web browser will be utilized to manage the vSphere environment.> <16 ESXi hosts will be deployed.> <Licenses must be shared with a vCenter Server at another site.> <An external Oracle 10g database server will be used to host the vCenter Server database.> Why will the administrator need to deploy vCenter Server on a Windows server?___
A. Linked Mode is a requirement for the solution.
B. Oracle 10g is a requirement for the solution.
C. The vSphere web client is a requirement for the solution.
D. Management of more than 5 hosts is a requirement for the solution.
【单选题】
What is a benefit of using VMware Data Protection ?___
A. Provides support for guest-level backups and restores of Microsoft SQL Servers, Exchange Servers, and Share Point Servers.
B. Provides support for advanced storage services including replication, encryption, deduplication, and compression.
C. Provides direct access to VDP configuration integrated into the vSphere Client.
D. Reduces disk space consumed by virtual machine data using deduplication.
【单选题】
An administrator enables vSphere High Availability (HA) on an existing cluster with a large number of hosts and virtual machines. The administrator notices that the setup of vSphere HA on some of the hosts is failing. What step, if taken, might resolve this issue?___
A. Increase the value of the config.vpxd.das.electionWaitTimeSec setting.
B. Set the value of vpxd.das.aamMemoryLimit to 256.
C. Set the value of the das.useDefaultIsolationAddress setting to False.
D. Increase the value of the das.iostatsinterval setting.
【单选题】
An ESXi 6.x host consists of 24 logical cores. Hyperthreading is enabled on the host. What is the maximum number of vCPUs that can be assigned to a virtual machine on this host?___
【单选题】
By default, each ESXi 6.x host is provisioned with a certificate from which root certificate authority?___
A. RedHat Certificate Authority
B. VMware Certificate Authority
C. DigiCert Certificate Authority
D. Verisign Certificate Authority
【单选题】
An administrator is adding an NFS datastore as shown in the Exhibit. What is the purpose of the Servers to be added list?___
A. It contains the IP addresses of the NFS Storage Server to provide multipathing capability.
B. It contains the IP addresses of the ESXi hosts that mount the datastore.
C. It contains the IP addresses used for
D. ynamic Discovery of targets.
【单选题】
An administrator reports that the System Event log data is only available for 24 hours when reviewing the Hardware Status tab. Which condition could be responsible for the loss of data?___
A. A Reset event log was executed.
B. The statistical collection level was set to a value of 1.
C. The boot disk of the host is corrupt.
D. Syslog has been configured at the vCenter Server level.
【单选题】
During an upgrade, the ESXi 6.x installer finds an existing version of ESXi and a VMFS3 volume. No virtual machines exist on the host or VMFS3 volume. The requirement is to upgrade to VMFS5. Which option should be chosen to meet this requirement?___
A. Upgrade ESXi and preserve the VMFS datastore
B. Install ESXi and preserve the VMFS datastore
C. Install ESXi and overwrite the VMFS datastore
D. Upgrade
E. SXi and overwrite the VMFS datastore
【单选题】
A vSphere 6.x Standard Switch is configured with 4 virtual machine portgroups, as shown in the exhibit. Which portgroup would be utilized by default when creating a new virtual machine?___
A. Access Network
B. DMZ Network
C. VM Network
D. Virtual Machine Network
【单选题】
Which vSphere 6.x feature will allow an organization to utilize native snapshots?___
A. Virtual Volumes
B. Virtual SAN
C. VMFS3
D. VMFS5
【单选题】
An administrator is creating a new vSphere Distributed Switch that will be utilized with a specific vSphere Cluster. The cluster itself contains a mix of ESXi 5.x and 6.x Hosts. Which Distributed Switch version should be created to support this configuration?___
A. Distributed Switch: 6.0.0
B. Distributed Switch: 5.0.0
C. Distributed Switch: 5.1.0
D. Distributed Switch: 5.5.0
