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【单选题】
按《国家电网公司业扩供电方案编制导则》规定,负荷电流为【】以上时,宜采用经电流互感器接入式的接线方式。___
A. 40A
B. 50A
C. 60A
D. 80A
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答案
C
解析
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一般来说.电击比电伤的伤害度【】。___
A. 轻
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C. KONG
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电路由【】和开关四部分组成。___
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B. 发电机、电动机、母线
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D. 电动机、灯泡、连接导线
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对升降板进行检验,试验时将其系于混凝土杆上,离地【】m左右。___
A. 0.8
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【单选题】
链条葫芦在使用时,【】。___
A. 可以超负荷使用,但不得增人强拉
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配电装置中,代表U相相位色为【】。___
A. 红色
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【单选题】
当负载持续率大于【】时,应选用连续定额的电动机。___
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【单选题】
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在测量电气设备绝缘电阻时,测试前应对被测设备进行充分接地放电。大容量设备停电后,对地放电至少【】。避免残余电荷,影响试验结果的准确性。___
A. 1min
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【单选题】
《国家电网公司业扩供电方案编制导则》规定,二级重要电力客户应采用双电源或【】供电。___
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高压断路器的额定电压表示断路器在运行中能长期承受的【】。___
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【单选题】
避雷器是是一种保护电器设备等免受【】损害的装置。___
A. KONG
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可按【】倍电动机的额定电流来选择单台电动机熔丝或熔体的额定电流。___
A. 0.5~0.6
B. 0.6~1.0
C. 1.5~2.5
D. 2.5~3.5
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私自迁移供电企业的电能计量装置者,属于居民用户的,应承担【】/次的违约使用电费。___
A. 300元
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运动导体切割磁力线而产生最大电动势时,导体与磁力线间的夹角应为【】度。___
A. 0
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A. KONG
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【单选题】
计量二次回路可以采用的线型有【】。___
A. 单股铜芯绝缘线
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C. 单股铝芯绝缘线
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国家电网公司承诺:受理客户计费电能表校验申请后,【】个工作日内出具检测结果。___
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下列哪项不是对压接钳的要求:【】。___
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在熔管的上端,还有一个【】,放置一低熔点熔片。___
A. 释放压力帽
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售电量是指供电企业通过【】测定并记录的各类电力用户消耗使用的电能量的总和。___
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根据国家电网公司业扩供电方案编制导则要求,建筑面积在50平方米及以下的住宅用电每户容量宜不小于【】。___
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人体触电伴随的高空坠落应该【】。___
A. 不属于触电事故
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D. 属于人为事故
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水平拉线跨越道路时,对路面中心的垂直距离不应小于【】米。___
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C. 6
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额定二次电流为5A的电流互感器,其下限负荷不得低于【】VA。___
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非晶合金变压器空载损耗可比同容量的S9系列配电变压器平均下降【】左右。___
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三元件电能表用于【】供电系统测量和记录电能。___
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当单相电能表相线和零线互换接线时,用户采用一相一地的方法用电,电能表将【】。___
A. 正确计量
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测量低压线路和配电变压器低压侧的电流时,若不允许断开线路时,可使用【】,应注意不触及其他带电部分,防止相间短路。___
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钳工用的台虎钳应固定在工作台或支架上使用,不能有摇晃现象,夹持工件时,只允许使用钳口最大行程的【】。___
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用一个恒定电动势E和一个内阻Ro串联组合来表示一个电源,Ro=【】Ω时我们称之为理想电压源。___
A. 0
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绝缘导线连接后必须用绝缘自黏带进行绝缘恢复,方法是从完整的绝缘层开始,每圈压叠【】带宽。___
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万用表的使用,根据被测量的【】,将功能和量程转换开关旋转到相应的档位。___
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所谓的电压质量就是指客户端电压【】的程度。___
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用电信息采集系统是对电力用户的【】进行采集、处理和实时监控的系统。___
A. 用电量
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考虑导线初伸长对弧垂的影响,10kV及以下架线时应将钢芯铝绞线设计弧垂减少【】。___
A. 8%
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电力电缆额定电压UO/U中UO是指设计时采用的电缆任一导体与【】之间的额定工频电压。___
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避雷器保护间隙的放电电压应低于电气设备的【】。___
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防止雷电侵入波引起过电压的措施有【】。___
A. 装设避雷针
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非晶合金铁芯配电变压器适合用于峰谷差【】的用电负荷。___
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10kV配电设备接地,接地体顶面埋没深度不应小于【】,角钢及钢管接地体应垂直配置。___
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Which esxcli namespace can a vSphere Administrator use to adjust the queue depth?___
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【单选题】
Which statement regarding datastore clusters meets VMware’s recommended best practices?___
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What VM Monitoring setting would ensure that the maximum reset window for a virtual machine is 24 hours?___
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What is the default space threshold for vSphere Storage DRS?___
A. 80%
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Which is the correct sequence to upgrade a vSphere infrastructure?___
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【单选题】
An administrator has a large boot from SAN cluster and wants to ensure consistent configuration by using host profiles. What special considerations are required for boot from SAN hosts?___
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C. The boot from SAN device must report as a local device.
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When using VMware Converter to import a Windows server and improve the consistency of the destination virtual machine, which optional step can be performed immediately prior to powering down the source server?___
A. Perform a final synchronization task.
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Restoration of the vCenter Server Appliance is accomplished using which interface?___
A. vSphere Web Client
B. vSphere Client
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When attempting to migrate a virtual machine to another host in the same cluster, the error message, “Select a valid compute resource” returns. What could cause this error?___
A. Both hosts run different versions of ESXi.
B. Both hosts are not sharing the same datastore.
C. VMware Tools is not installed.
D. Virtual machine has an ISO attached.
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When will vSphere Data Protection delete the expired backup image of a Platform Service Controller?___
A. Immediately after the retention period has expired.
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【单选题】
Group A has permission to download files in Content Library. Group B does not have permission to download files in Content Library. If a user is a member of both groups, what will be the result?___
A. The user cannot download file from Content Library.
B. The user can download file from Content Library.
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【单选题】
An administrator is trying to set up Host Partial Failure Response, but the Automated option is grayed out. What can the administrator change to enable the Automated option?___
A. Change the vSphere DRS Automation level to Partially Automated.
B. Change the vSphere DRS Automation level to Fully Automated.
C. Enable vSphere HA Host Monitoring.
D. Change the vSphere DPM Automation level to Automatic.
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When you attempt to open a virtual machine console from the vSphere Web Client, the console does not connect. The following error message appears:<HTTP ERROR 404> <Problem accessin/.Reason: Not Found>. Why did not connect?___
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What new feature was introduced to the Content Library in vSphere 6.5?___
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How can an administrator exclude Encryption rights from a support engineer?___
A. Clone the role Virtual machine power user, remove Cryptographic operations privileges.
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The administrator must back up a vCenter HA deployment. Which component must be backed up?___
A. Passive node
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What is the supported protocol to perform remote L3 traffic monitoring in vSphere 6.5?___
A. VXLAN
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What are the minimum hardware requirements for a Windows vCenter Server with embedded PSC that manages a “Small” environment?___
A. 2vCPUs, 16 GB RAM
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A. 80
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What can prevent Storage DRS from functioning on a datastore?___
A. The datastore is configured for Virtual Machine Swapfile location.
B. The datastore is shared across multiple datacenters.
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D. Storage DRS advanced option IgnoreAffinityRulesForMaintenance is set to 1.
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When troubleshooting VMware vCenter Server issues, when logging level provides maximum detail?___
A. Verbose
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What new feature is introduced in NFS 4.1 on ESXi 6.5?___
A. IPv6
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What configuration option would ensure that a virtual NUMA topology is defined on VMs having more than eight virtual CPUs?___
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What is the minimum disk space required to deploy vSphere Data Protection (VDP) with 8 TB configuration?___
A. 4 TB
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What advanced option for vSphere HA defines a maximum number of reset attempts by VMCP for a virtual machine?___
A. das.maxterminates
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What vSphere technology enables the administrator to ensure consistent configuration at scale?___
A. PowerCLI
B. Host Profiles
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【单选题】
Which port is used for vSphere HA agent-to-agent communication?___
A. 443
B. 8182
C. 22
D. 902
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Which log file would assist in identifying an issue that occurred during the database export phase of a vCenter Server upgrade process?___
A. vcdb_import.out
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Bidirectional CHAP is support by which storage initiator?___
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What is a pool of raw storage capacity that a storage system can provide to Virtual Volumes?___
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vSphere 6.5 DRS is now Network-Aware. Based on network utilization, when will DRS balance VMs?___
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A scripted upgrade of ESXi fails due to an incorrect parameter in the upgrade script. What file must the administrator modify to correct the problem?___
A. vmreconfig.pl
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C. ks.cfg
D. boot.cfg
【单选题】
A VM folder contains VM1 and VM2. Group A has permission to power on virtual machines, defined on the VM folder and its children. Group B has permission to power off virtual machine VM2. If a user is a member of group A and B, what action can the user perform?___
A. Suspend VM2.
B. Power off VM1.
C. Power on and power off VM1.
D. Power on and power off VM2.
【单选题】
The networking team has requested to have a dedicated network for iSCSI traffic. This task has been assigned to the vSphere Administrator. What is the VMware-recommended way to accomplish this?___
A. Configure Static Routes on each ESXi Server.
B. Configure the right subnet.
C. Create a custom IP Stack.
D. Define a dedicated gateway for the iSCSI vmkernel.
【单选题】
To prevent possible failures or issues during a vSphere upgrade, which component should be upgraded first?___
A. ESXi Hosts
B. virtual machines
C. datastores
D. vCenter Server
【单选题】
What is the command for updating an ESXi host?___
A. esxcli software vib update –d /vmfs/volumes/Datastore/DirectoryName/PatchName.zip
B. esxupdate software update –d”/vmfs/volumes/Datastore/DirectoryName/PatchName.zip”
C. esxcli software update –d “/vmfs/volumes/Datastore/DirectoryName/PatchName.zip”
D. esxupdate software vib update –d /vmfs/volumes/Datastore/DirectoryName/PatchName.zip
【单选题】
A vSphere Administrator would like to identify which physical NUMA node their virtual machine is currently residing on. What esxtop metric would provide this information?___
A. GST_ND[x]
B. OVD_ND[x]
C. NRMEM
D. NHN
【单选题】
How can a vSphere administrator ensure that two virtual machines never run on the same datastore in a datastore cluster, while permitting the VMs to be load-balanced?___
A. Use an Intra-VM Anti-Affinity Rule.
B. Configure a storage DRS VM override.
C. Disable storage
D. RS for the VMs.
【单选题】
What is the VMware-recommended way to move a physical adapter out of Network I/O Control’s scope?___
A. Set the teaming policy to “Route Based on Physical NIC Load.”
B. Add the vmnic to the Net.NetNiocAllowOverCommit parameter in Advanced System Settings.
C. Add the vmnic to the Net.IOControlPnicOptOut parameter in Advanced System Settings.
D. Move the vmnic to a different vmUplink port on the Distributed Switch.
【单选题】
A VM folder contains VM1 and VM2. Group A has permission to power on virtual machines, defined on the VM folder and its children. Group B has permission to power off virtual machines, defined on the VM folder and its children. If a user is a member of Groups A and B, what will be the user’s effective permission on VM1 and VM2?___
A. Power on
B. Power off.
C. Power on and Power off.
D. Reset.
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