相关试题
【单选题】
10.9螺栓直径为___，适用于P60轨。
A. 24mm
B. 25mm
C. 26mm
D. 27mm
【单选题】
10.9螺栓直径为24mm，适用于___轨。
A. P60
B. P50
C. P43
D. P38
【单选题】
道床面应低于轨枕承轨面30~40mm，道床面横向排水坡度不宜小于___。
A. 0.03
B. 0.04
C. 0.05
D. 0.06
【单选题】
道床面应低于轨枕承轨面___，道床面横向排水坡度不宜小于3%。
A. 30~40mm
B. 35~45mm
C. 40~50mm
D. 50~55mm
【单选题】
轨底坡是否正确，可以从___位置判定。
A. 钢轨顶面上的光带
B. 钢轨下颚
C. 轨腰
D. 轨底
【单选题】
光带偏向内侧，说明___。
A. 轨底坡不足
B. 轨底坡过大
C. 轨底坡合适
D. 无轨底坡
【单选题】
光带偏向外侧，说明___。
A. 轨底坡过大
B. 轨底坡不足
C. 轨底坡合适
D. 无轨底坡
【单选题】
光带居中，说明___。
A. 轨底坡合适
B. 轨底坡不足
C. 轨底坡过大
D. 无轨底坡
【单选题】
道岔应设在直线地段，道岔端部至曲线端部的距离不宜小于___，车场线可以减少到3m。
【单选题】
道岔应设在直线地段，道岔端部至曲线端部的距离不宜小于5m，车场线可以减少到___。
【单选题】
正线与联络线上曲线半径小于___时，直线与圆曲线间要设缓和曲线。
A. 1500m
B. 1600m
C. 1700m
D. 1800m
【单选题】
直线段，两股钢轨接头相错量不得超过___。
A. 35mm
B. 40mm
C. 45mm
D. 50mm
【单选题】
曲线段，两股钢轨接头相错量不得超过___。
A. 30mm加所采用的缩短轨缩短量的一半
B. 40mm加所采用的缩短轨缩短量的一半
C. 50mm加所采用的缩短轨缩短量的一半
D. 60mm加所采用的缩短轨缩短量的一半
【单选题】
曲线内股，累计缩短量超过标准缩短轨缩短量一半的时候即布置___缩短轨。
【单选题】
我国规定，允许最大未被平衡欠超高，一般为75mm，特殊情况为___。
A. 80mm
B. 90mm
C. 100mm
D. 110mm
【单选题】
城市轨道交通的现有运营线，最大外轨超高为___。
A. 110mm
B. 120mm
C. 130mm
D. 140mm
【单选题】
使用燃油发动机，加油时必须___、严禁吸烟、避开明火。
【单选题】
进行锯轨和打磨时，非操作人员应离开作业区至少___以上。
【单选题】
进行绝缘接头拆卸作业时，需___配合，长柄工具应有绝缘套，作业中不得将两股钢轨搭接。
A. 供电人员
B. 通号人员
C. 工务人员
D. 车站人员
【单选题】
配比燃油、灌入捣固机油箱将汽油和二冲程小松汽油机专用润滑油以___的比例混合，并摇拌均匀。
A. 40:1
B. 50:1
C. 60:1
D. 100:1
【单选题】
扒开的道床要符合要求：长度自钢轨中心向两侧450mm；宽度距轨枕边不少于___，并与轨枕成45度角，便于镐头插入。
A. 70mm
B. 80mm
C. 90mm
D. 100mm
【单选题】
扒开的道床要符合要求：长度自钢轨中心向两侧450mm；宽度距轨枕边不少于80mm，并与轨枕成___，便于镐头插入。
A. 35度角
B. 45度角
C. 55度角
D. 65度角
【单选题】
扒开的道床要符合要求：长度自钢轨中心向两侧___；宽度距轨枕边不少于80mm，并与轨枕成45度角，便于镐头插入。
A. 430mm
B. 450mm
C. 470mm
D. 490mm
【单选题】
捣固机启动后，应使其怠速运转___，使汽油机各部润滑后方可工作。
A. 1-2分钟热机
B. 3-5分钟热机
C. 6-7分钟热机
D. 10分钟热机
【单选题】
内燃捣固机在距离钢轨边缘___处下镐，镐头与轨枕面成45度角。
A. 10～20mm
B. 20～30mm
C. 30～40mm
D. 40～50mm
【单选题】
曲线正矢测量作业周期为：___。
A. 二个月
B. 三个月
C. 四个月
D. 五个月
【单选题】
扒碴时扒开深度应底于轨枕底面___。
A. 10mm
B. 20mm
C. 30mm
D. 40mm
【单选题】
正线正矢测量时，使用弦长为___的弦线进行测量。
A. 10m
B. 20m
C. 30m
D. 40m
【单选题】
停车场正矢测量时，使用弦长为___的弦线进行测量。
A. 1m
B. 10m
C. 20m
D. 30m
【单选题】
每处捣固时间不少于___。
A. 25s
B. 30s
C. 35s
D. 40s
【单选题】
钢轨磨耗测量器是以钢轨工作边和非工作边轨颚部分为测量基准，在距工作边___轨头宽处读取钢轨垂直磨耗。
A. 1/2
B. 1/3
C. 1/4
D. 1/5
【单选题】
在线路上卸下扣件，修理钉孔或更换螺旋道钉时至少要___。
A. 相隔一根轨枕卸一根
B. 相隔两根轨枕卸一根
C. 相隔三根轨枕卸一根
D. 相隔四根轨枕卸一根
【单选题】
钢轨挡车器保养作业作业周期为：___。
A. 每月1次
B. 每年1次
C. 每天1次
D. 每周1次
【单选题】
钢轨涂油器保养作业作业周期为：___。
A. 每月1次
B. 每季度1次
C. 每周1次
D. 每年1次
【单选题】
捣固时将镐头冲击道碴插向枕底，待插入枕底50mm左右时，停留___后拔出，换位重复捣固。
A. 1～2秒
B. 3～4秒
C. 5～8秒
D. 9～10秒
【单选题】
___是指按周期所组织进行的成段成批全面更换线路部件及全面改进轨道线路纵横断面的修理。
【单选题】
线路大修分为两大类，即线路大修和___。
A. 整体大修
B. 单项大修
C. 组合大修
D. 多重大修
【单选题】
复曲线应在正矢递减范围内，从较大轨距加宽向较小轨距加宽均匀___。
A. 递增
B. 递减
C. +1mm
D. -1mm
【单选题】
使用新木枕应用直径12.5mm木钻钻道钉孔，孔深有铁垫板时为___，无铁垫板时为130mm。
A. 100mm
B. 110mm
C. 120mm
D. 130mm
推荐试题
【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?___
【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
【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?___
A. Set a 2GB memory reservation on the VM.
B. Mount the virtual disk from the affected VM on to another virtual machine and free up space from within the OS.
C. Enable vSphere HD admission control on the cluster in which the VM resides.
D. Set a 2GB memory limit on the VM.
【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?___
A. vSphere 6.5 does not support manual UNMAP.
B. The manual UNMAP operation has been moved to the vSphere web client.
C. The VASA version is use is incompatible.
D. UNMAP is automated for VMFS6.
【单选题】
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?___
A. Perform a storage rescan on VMFS volumes.
B. Unmount the NFSv3 datastore, and then mount as NFSv4.1 datastore.
C. Nothing. All NFSv3 mounted datastores are upgraded automatically during vSphere upgrades.
D. Perform a scan of new storage devices.
【单选题】
An administrator wants to restore the vCenter Server Appliance 6.5 from backup. Where can this be accomplished?___
A. from the ESXi Host Client
B. from the VMware vSphere Appliance Management Interface
C. from within the VMware vSphere Web Client
D. from the vCenter Server Appliance Installer
【单选题】
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?___
A. VM-K2 will be unable to power on because there are insufficient resources.
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.
【单选题】
Which is the block size on the VMFS6 datastore?___
A. All small and large file blocks are 8MB.
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?___
A. to manage conversion tasks remotely
B. to convert virtual machines as well as physical machines
C. to allow installation of the Converter agent on remote source machines
D. to hot clone physical or virtual machines
【单选题】
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
【单选题】
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.
