【判断题】
钢芯铝绞线损伤断股损伤截面积占铝股总面积的7%~15%,应用补修管或补修条处理
A. 对
B. 错
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答案
B
解析
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架空绝缘导线的绝缘层损伤后,绝缘层的损伤深度在绝缘层厚度的10%及以上时必须进行绝缘补强处理
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单杆式配电变压器台架是将配电变压器、高压跌落式熔断器和高压避雷器装在一根水泥杆上
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冷缩式电缆头套管用辐射交联热收缩材料制成
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如果施工临时电源是低压三相四线供电,可以采用三芯电缆另加一根导线当零线供电
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冬季施工,电缆敷设现场的温度如果低于要求要采取加热电缆的措施,否则不能敷设
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电缆穿管敷设时,一根电缆管只允许穿一根电力电缆
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倒闸操作应根据值班调控人员或运维人员的指令,受令人复诵无误后执行。发布指令应准确、清晰,使用规范的调度术语和线路名称、设备双重名称
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失压脱扣器是一种在无电后使断路器跳闸的电气装置
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电动机外壳漏电,一般可用验电笔检查
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接地装置是接地体与接地线的统称
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三相电容器只要其额定电压不低于电网的额定电压即可直接接入使用
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《农村低压电网剩余电流动作保护器配置导则》规定:用于保护单台电器设备(工器具)或局部共用供电插座回路的剩余电流动作保护器称家保
A. 对
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《农村电网剩余电流动作保护器安装运行规程》规定:临时用电的电气设备,应在临时线路的首端设置末级保护
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在测量电气设备绝缘电阻时,应采用电场屏蔽、连接表的屏蔽极等措施,克服感应电压的影响
A. 对
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故障巡视应始终认为线路带电,即使明知线路已停电,也应认为线路随时有恢复送电的可能
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断路器的额定工作电压大于或等于线路额定电压
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当电容器与电网断开后,能够通过放电电阻放电,一般情况下10min后电容器残压可降至75V以下
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钢丝绳在绞磨上使用时,磨芯的最小直径不得小于钢丝绳直径的10倍
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用万用表测交直流2500V高电压时,应将红表笔插入专用的2500V插孔中
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Which guest operating system supports PVRDMA?___
A. Windows (32-Bit)
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【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?___
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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.
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【单选题】
The vSphere Data Protection performance analysis results in the “Conditionally Passed” status. What can cause this condition?___
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【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?___
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【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?___
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【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?___
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Which command can be run to troubleshoot connectivity problems with vmkernal network interfaces?___
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What counter should an administrator check to determine if a virtual machine is ballooning?___
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By default, how often is the vCenter vpx user password automatically changed?___
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Which metric in the Exhibit would identify high latency for a virtual machine operating system?___
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What VM Monitoring setting would ensure that the failure interval for a virtual machine is defined as 120 seconds?___
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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?___
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What is the result of a “Consolidate” action on a virtual machine?___
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What is the VMware-recommended best practice for Fibre Channel zoning?___
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vCenter Server Appliance Instance can be backed up using which Client Interface?___
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Which storage feature always requires the use of third-party software on ESXi?___
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An ESXi host's VMCA-Signed certificate has expired. How can the certificate be renewed?___
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【单选题】
Which is the correct order for upgrading vSphere components?___
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Which iSCSI initiator type can be used with any network interface card?___
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【单选题】
An administrator is attempting to power on a virtual machine with 32GB of memory. The operation fails with the following error: <Could not power on VM: No space left on device> <Checking the space on the virtual machine's datastore, there is 30GB free.> Which action would allow the VM to power on?___
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C. Enable vSphere HD admission control on the cluster in which the VM resides.
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【单选题】
An administrator attempts to manually reclaim space on thin-provisioned VMFS6 volumes but finds that no additional space is being recovered. Which could be causing this?___
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An administrator has upgraded to vSphere 6.5 and also wants to use Kerberos authentication for NFS. Which can be done to the existing NFSv3 volumes to enable this feature?___
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C. Nothing. All NFSv3 mounted datastores are upgraded automatically during vSphere upgrades.
D. Perform a scan of new storage devices.
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An administrator wants to restore the vCenter Server Appliance 6.5 from backup. Where can this be accomplished?___
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D. from the vCenter Server Appliance Installer
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The administrator wants to power on VM-K2, which has a 2GHz CPU reservation. VM-M1, VM-M2, and VM-K1 are all powered on. VM-K2 is not powered on. The exhibit shows the parent and child resource reservations. If Resource Pool RP-KID is configured with an expandable reservation, which statement is true?___
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B. VM-K2 will be able to power on since resource pool RP-KID has 2GHz available.
C. VM-K2 will be unable to power on because only 2GHz are reserved for RP-KID.
D. VM-K2 will receive resource priority and will be able to power on this scenario.
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Which is the block size on the VMFS6 datastore?___
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B. All small and large file blocks are 1MB.
C. Small file blocks are 512KB. large file blocks are 64MB.
D. Small file blocks are 1MB, large file blocks are 512MB.
【单选题】
When installing vCenter Converter Standalone, why must an administrator perform a client-server installation instead of a local installation?___
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C. to allow installation of the Converter agent on remote source machines
D. to hot clone physical or virtual machines
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Which is required by vCenter Converter Standalone to convert a physical Red Hat Enterprise Linux 7 machine to a virtual machine?___
A. The Linux machine must be powered off.
B. The Linux machine must have the SSH daemon started.
C. The Linux machine must use a static IP address.
D. The Linux machine must have a fully-qualified domain name.
【单选题】
An administrator is troubleshooting network communications between a vCenter Server and an ESXi 6.5 host. Which log shows the related events between these components?___
A. /var/log/fdm.log
B. /var/log/vpxa.log
C. /var/log/hostd.log
D. /var/log/auth.log
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An administrator has recently upgraded from vSphere 6.0 to 6.5, and can no longer see the software iSCSI named vmhba33. Which could be the reason for this?___
A. The upgrade has changed the vmhba name.
B. vSphere 6.5 automates iSCSI configurations.
C. vSphere 6.5 no longer supports software iSCSI.
D. The upgrade has deleted the vmhba.
【单选题】
An administrator is trying to vMotion a VM from his datacenter to a recovery site. Which is the maximum allowed RTT (Round-Trip Time) latency between source and destination host?___
A. 100 milliseconds
B. 150 milliseconds
C. 15 milliseconds
D. 10 milliseconds
【单选题】
Which is required for configuring iSCSI Software Adapter network port binding?___
A. VMkernel of the iSCSI traffic must be load balanced using Route based on IP Hash algorithm.
B. VMkernel of the iSCSI traffic must be load balanced using Route based on Source Virtual Port ID algorithm.
C. VMkernel of the iSCSI traffic must be load balanced using Route based on Source MAC Hash algorithm.
D. VMkernel of the iSCSI traffic must be bound to only one active network adapter.
【单选题】
In vSphere Data Protection 6.1, which is the function of a Backup Verification job?___
A. None. Backup Verification job is not a feature of vSphere Data Protection
B. It is a manual task -Power it on -Verify the guest OS -Check started applications
C. It is an automatic process -Restore a virtual machine -Power it on -Verify that the guest OS is booted by communicating with the Backup Verification agent
D. It is an automatic process -Restore a virtual machine -Power it on -Verify that the guest OC is booted by detecting the VMware ToolsTM "heartbeats"
【单选题】
An administrator has enabled vSphere Distributed Switch Health Check. The hosts connected to that Distributed Switch all display an alert:< vSphere Distributed Switch MTU supported status > .The administrator has all of the VMkernel ports MTU sizes set to 1600. Which action will remedy this problem?___
A. Configure the Distributed Switch to MTU 9100.
B. Disconnect and reconnect the physical network cable.
C. Configure the physical switch to MTU 1600.
D. Disable the Distributed Switch MTU.
【单选题】
Which Host Profile Subprofile configuration is used to configure firewall settings for ESXi hosts?___
A. Advanced Configuration Settings
B. General System Settings
C. Security
D. Networking
【单选题】
Where would a vSphere administrator find general vCenter Server logs on a vCenter Server Appliance?___
A. /var/log/vmware/vpxd/
B. /var/log/messages
C. /etc/vmware-vpx/
D. /var/log/vmware/vsan-health/
【单选题】
An administrator wishes to enable network port mirroring based on source port. Which feature should be enabled?___
A. vSphere standard switch port
B. ERSPAN
C. NSX Virtual Wire
D. VLAN
【单选题】
Which CLI command shows the physical uplink status for a vmnic?___
A. esxcli network ip connection list
B. esxcli network ip neighbor list
C. esxcli network nic get
D. esxcli network nic list