【单选题】
IP地址172.15.1.1对应的自然分类网段包含的可用主机地址数为________个。___
A. 128
B. 256
C. 512
D. 65535
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相关试题
【单选题】
在windows操作系统的命令行下，进入控制台的命令是在“运行”里面键入___________。___
A. regedit
B. mstsc
C. mmc
D. gpedit、exe
【单选题】
在windows操作系统的命令行下，打开注册表的命令是___ __________。___
A. mstsc
B. gpedit、msc
C. regedit
D. nslookup
【单选题】
默认情况下，Windows远程桌面被启用后，被打开的端口为_______。___
A. 3306
B. 1433
C. 3389
D. 443
【单选题】
一般情况下，HTTPS默认使用TCP端口号________。___
A. 433
B. 1433
C. 8443
D. 443
【单选题】
H3C交换机查看当前所有配置信息的命令是________。___
A. show running-config
B. show current-config
C. dis running-config
D. display current-config
【单选题】
以下哪个选项不是防火墙提供的安全功能：___
A. IP地址欺骗防护
B. NAT
C. 访问控制
D. SQL注入攻击防护
【单选题】
下面对访问控制技术描述最准确的是：___
A. 保证系统资源的可靠性
B. 实现系统资源的可追查性
C. 防止对系统资源的非授权访问
D. 保证系统资源的可信性
【单选题】
以下哪种无线加密标准是安全性最弱？___
A. WEP
B. WPA
C. WPA2
D. WAPI
【单选题】
在关系型数据库系统中通过“视图（view）”技术，可以实现以下哪种安全原则？___
A. 纵深防御原则
B. 最小权限原则
C. 职责分离原则
D. 安全性与便利性平衡原则
【单选题】
攻击者在远程WEB页面的HTML代码中插入具有恶意目的的数据，用户认为该页面是可信赖的，但是当浏览器下载该页面，嵌入其中的脚本将被解释执行，这是哪种类型的漏洞？___
A. 缓冲区溢出
B. SQL注入
C. 设计错误
D. 跨站脚本
【单选题】
通常在网站数据库中，用户信息中的密码一项，是以哪种形式存在？___
A. 明文形式存在
B. 服务器加密后的密文形式存在
C. hash运算后的消息摘要值存在
D. 用户自己加密后的密文形式存在
【单选题】
张三将微信个人头像换成微信群中某好友头像，并将昵称改为该好友的昵称，然后向该好友的其他好友发送一些欺骗消息。该攻击行为属于以下哪类攻击？___
A. 口令攻击
B. 暴力破解
C. 拒绝服务攻击
D. 社会工程学攻击
【单选题】
_______是智慧高速公路的智慧引擎，是建设智慧高速公路的关键。___
A. GIS
B. BIM
C. AI
D. 大数据应用分析
【单选题】
“十三五”建设目标要实现监控视频数字高清率达到_______，高速公路重点路段动态监测覆盖率达到_______。___
A. 100%，100%
B. 90%，90%
C. 100%，90%
D. 90%，100%
【单选题】
为了实现快速、无损、智能的全自动化道路检测，为管理养护计划提供全面准确科学依据，最有效的设备为_______。___
A. 高清摄像头
B. 智能道路检测车等移动监测设施
C. 无人机
D. 人工巡查车
【单选题】
"BIM"的全称是_______。___
A. 建筑信息模型
B. 全球卫星定位系统
C. 北斗卫星定位系统
D. 建筑定位系统
【单选题】
_____是负责对物联网收集到的信息进行处理、管理、决策的后台计算处理平台。___
A. 感知层
B. 网络层
C. 云计算平台
D. 物理层
【单选题】
_____是物联网识别物体，采集信息的来源。 ___
A. 网络层
B. 感知层
C. 应用层
D. 云计算平台
【单选题】
RFID卡_____可分为：主动式标签（TTF）和被动式标签（RTF）。___
A. 按供电方式
B. 按工作频率
C. 按通信方式
D. 按标签芯片
【单选题】
云计算中SaaS是指____。 ___
A. 平台即服务
B. 软件即服务
C. 基础设施即服务
D. 通信即服务
【单选题】
以下特征中不属于物联网特征的是_____。 ___
A. 全面感知
B. 可靠传输
C. 智能处理
D. 虚拟化
【单选题】
由第三方服务商为用户提供的能够使用的云称为_____。 ___
A. 私有云
B. 公有云
C. 混合云
D. 社区云
【单选题】
车道车辆检测器计数精度偏差为≤0.1%，实测方法为人工记数核对，要大于_____。___
A. 100辆
B. 300辆
C. 500辆
D. 1000辆
【单选题】
电动栏杆起落总时间规定为≤4.0s，实测方法为_____。___
A. 秒表测10次，取平均值
B. 秒表测20次，取平均值
C. 秒表测50次，取平均值
D. 秒表测100次，取平均值
【单选题】
收费天棚信号灯的色度和亮度应符合_____。___
A. GB 14885
B. GB 14886
C. GB 14887
D. GB 14888
【单选题】
收费读写卡设备的响应时间以及对异常卡的处理实测次数为_____。___
A. 20次
B. 40次
C. 60次
D. 100次
【单选题】
实测过程为任意流程时关闭车道控制器(车道计算机)电源，要求车道工作状态正常，加电后数据无丢失。该测试为______。___
A. 断电数据完整性测试
B. 突发事件测试
C. 断网测试
D. 误码测试
【单选题】
ETC系统中与车载单元OBU通信完成收费交易的是______。___
A. 车道天线
B. 路测设备控制
C. 车道控制器
D. 路侧单元RSU
【单选题】
ETC系统收费方式的优越性和先进性十分突出，故适用于______。___
A. 所有的路网
B. 交通量大的高速路网
C. 城市交通主干线
D. 高等级公路
【单选题】
脚踏报警所属的系统是______。___
A. 人口车道设备
B. 出口车道设备
C. 紧急电话系统
D. 内部有线对讲系统
【单选题】
云台水平转动角规定值为______。___
A. ≥180°
B. ≥270°
C. 350°
D. ≥360°
【单选题】
云台垂直转动角规定值为______。___
A. 上仰≥10°，下俯≥70°
B. 上仰≥15°，下俯≥80°
C. 上仰≥15°，下俯≥90°
D. 上仰≥30°，下俯≥90°
【单选题】
收费视频监视系统主要单体设备包括______。___
A. 雨刷
B. 视频切换控制矩阵
C. 计算机
D. 交换机
【单选题】
过负荷保护电器，应装设在回路 或导体载流量减小处。___
【单选题】
电子信息系统机房内的业务主设备应由不间断电源系统供电。不间断电源系统应有自动和____装置，避免系统故障或维修时中断电源。___
A. 手动旁路
B. 静态旁路
C. 自动旁路
D. 手动变频旁路
【单选题】
电缆应按设计要求编号，颜色应符合：保护线（PE线）应为 色，中性线（N线）应为淡蓝色，L1相线应用黄色，L2相线应用绿色，L3相线应用 色。___
A. 黄绿相间、红
B. 黄红相间、红
C. 蓝白相间、绿
D. 红白相间、绿
【单选题】
发电机与机房的距离不得小于 米，并且发电机排出的油烟不得影响空调机组的正常运行。___
【单选题】
机房内通信设备及其供电设备正常不带电的金属部分，进机房电缆的保安装置接地端，以及电缆的金属护套均应作 。___
A. 通信回路接地
B. 保护接地
C. 中性点接地
D. 防雷接地
【单选题】
变压器安装的垂直偏差应小于（），水平度偏差应小于（）。___。
A. 1.2mm/m 1.5 mm/m
B. 1.2mm/m 1.8 mm/m
C. 1.5mm/m 2 mm/m
D. 1.8 mm/m 1.5 mm/m
【单选题】
高速公路供配电设施中户内盘柜安装中，母线平置时支持夹板的上部应与母线保存______的间隙；母线立置时，上部压板应与母线保持______的间隙。___
A. 1mm~1.5mm 1.5mm~2mm
B. 1mm~1.2mm 1.2mm~2mm
C. 1mm~1.5mm 1.2mm~1.8mm
D. 1mm~1.5mm 1.2mm~1.8mm
推荐试题
【多选题】
An administrator finds that the Microsoft Exchange virtual machines are exhibiting network latency. What two in-guest changes can help decrease latency? (Choose two.)___
A. LRO
B. TSO
C. SR-IOV
D. PVRDMA
【多选题】
Which two types of iSCSI adapters require VMkernel networking configuration? (Choose two.)___
A. dependent hardware
B. in-guest
C. software
D. independent hardware
【多选题】
Which two statements are true for NFS v4.1 firewall behavior? (Choose two.)___
A. It closes port 2049.
B. It sets allowed. All flag to TRUE.
C. It sets allowed. All flag to FALSE.
D. It opens port 2049.
【多选题】
A vSphere Administrator attempts to enable Fault Tolerance for a virtual machine but receives the following error: Secondary VM could not be powered on as there are no compatible hosts that can accommodate it. What two options could cause this error? (Choose two.)___
A. The other ESXi host(s) are in Maintenance Mode.
B. Hardware virtualization is not enabled on the other ESXi host(s).
C. The other ESXi host(s) are in Quarantine Mode.
D. Hardware MMU is enabled on the other
E. SXi host(s).
【多选题】
Storage capabilities be populated in what two ways? (Choose two.)___
A. The administrator can use tags to describe capabilities.
B. Default capabilities are provided by vCenter Server.
C. Datastores can advertise their capabilities through VAAI.
D. Datastores can advertise their capabilities through VASA.
【多选题】
In network troubleshooting it is important to know what upstream switch the ESXi host is connected to. Which two features does ESXi provide to help identify the upstream switch? (Choose two.)___
A. Promiscuous mode
B. DPM
C. LLDP
D. CDP
【多选题】
Virtual Volumes supports which three VMware features? (Choose three.)___
A. Instant Clones
B. Distributed Resource Scheduler
C. Linked Clones
D. vMotion
E. Storage Distributed Resource Scheduler
【多选题】
vSphere DRS helps to balance virtual machines with available resources in a vSphere cluster. What three types of resources can be taken into account for balancing? (Choose three.)___
A. CPU
B. physical NIC saturation of an ESXi host
C. virtual NIC saturation of a virtual machine
D. RAM
E. storage latency
【多选题】
Which three design requirements must be satisfied to enable RAID-6 objects in a VMware vSAN cluster? (Choose three.)___
A. vSAN Advanced license or higher
B. vSAN stretched cluster
C. at least six hosts contributing storage
D. deduplication and compression
E. all flash configuration
【多选题】
When using "Cluster resource percentage" for host failover capacity in vSphere HA Admission Control, the total resource requirements are calculated from which two values? (Choose two.)___
A. Total vCPUs assigned to each VM.
B. Average CPU usage on each VM over time.
C. Memory reservations on each VM.
D. Total memory assigned to each VM.
E. Average active memory on each VM over time.
F. CPU reservations on each VM.
【多选题】
Which are four attributes of the Active vCenter HA node? (Choose four)___
A. It uses the vCenter HA network to communicate with the Witness node.
B. It constantly replicates vPostgres data with the Witness node.
C. It uses a public IP address for the management interface.
D. It runs the active vCenter Server Appliance instance.
E. It uses the vCenter HA network for replication of data to the Passive node.
F. It provides a quorum to protect against split-brain situations.
【多选题】
Which are two vCenter Server two-factor authentication methods? (Choose two.)___
A. RSA SecurID
B. Smart Card
C. SAML
D. Symantec VIP
【多选题】
An administrator is creating VMkernel adapters on an ESXi 6.5 host and wants to create separate VMkernel adapters for every type of traffic in the default TCP/IP stack. Which three types of traffic can be explicitly enabled on a separate VMkernel adapter? (Choose three.)___
A. Virtual SAN traffic
B. NFS traffic
C. vMotion traffic
D. vSphere HA traffic
E. Fault Tolerance logging traffic
【多选题】
When migrating a Windows vCenter Server 6.0 to the vCenter Server Appliance 6.5, which two will be migrated by default? (Choose two.)___
A. Local Windows OS users and groups
B. Configuration
C. Custom ports
D. FQDN
E. Historical and Performance data
【多选题】
Which three types of Content Libraries exist within vSphere 6.5? (Choose three.)___
A. Remote Content Library
B. Published Content Library
C. Local Content Library
D. Shared Content Library
E. Subscribed Content Library
【多选题】
An administrator cannot enable multi-processor Fault Tolerance (SMP-FT) for a virtual machine. Which are two possible causes for this? (Choose two.)___
A. The virtual machine is running on a vSAN datastore.
B. The Fault Tolerance network is using a 10Gbit uplink.
C. The virtual machine has 6 vCPUs assigned.
D. The virtual machine has a 1TB VMDK attached.
E. The virtual machine has snapshots present.
【多选题】
Which two statements are true for Predictive DRS? (Choose two.)___
A. It balances resource utilization for virtual machines with unpredictable utilization patterns.
B. It integrates DRS with vRealize Operations Manager to balance workloads for virtual machines before resource utilization spikes occur.
C. It balances resource utilization based on a threshold's algorithm that runs each night.
D. It determines the best placement and balance of virtual machines based on a threshold's algorithm that runs each night in vCenter Server 6.5 Database.
【多选题】
Which two situations could cause a virtual machine to appear with (orphaned) appended to its name? (Choose two.)___
A. if a host failover is unsuccessful
B. if a virtual machine was removed from vCenter Server's inventory
C. if a virtual machine was deployed from template, and the template has been deleted
D. if a virtual machine is unregistered directly on the host
【多选题】
Which three requirements are needed to apply RAID 5 or RAID 6 erasure coding on a vSAN 6.2 or 6.5 object? (Choose three.)___
A. on Disk Format 3.0
B. Hybrid vSAN
C. All Flash vSAN
D. vSAN Advanced License
E. Stretched Cluster Configurations
【多选题】
An administrator sees the following error in the log files: Which two events could be the source of the error message? (Choose two.)___
A. vCenter Server failure
B. VXLAN failure
C. Disk array failure
D. Network failure
E. ESXi host failure
【多选题】
An administrator is attempting to access an ESXi host via the DCUI but is unable to do so. Which could be two possible causes? (Choose two.)___
A. The host in Qhas no out-of-band management capability (i.e. iLO/iDRAC).
B. The SSH service is disabled on the host.
C. Strict lockdown mode is enabled on the host.
D. Normal lockdown mode is enabled and the administrator is a member of the
E. xception User list.
【多选题】
Which two permissions are required to migrate a virtual machine with Storage vMotion? (Choose two.)___
A. Network > Move Network
B. Virtual Machine > Inventory > Move
C. Resource > Migrate powered on virtual machine
D. Datastore > Allocate Space
【多选题】
Which are three supported storage requirements for vCenter Server HA? (Choose three.)___
A. NFS
B. RDM
C. vSAN
D. VMFS
E. JBOD
【多选题】
Which are the two network requirements for a VMware vSAN 6.5 cluster? (Choose two.)___
A. Multicast must be enabled on the physical switches and routers that handle vSAN traffic.
B. vSAN requires IPv6 only.
C. All hosts must have a dedicated 40GbE NIC.
D. The vSAN network supported IPv4 or IPv6.
E. vSAN requires IPv4 only.
【多选题】
Which three prerequisites must be in place prior to enabling secure boot for a virtual machine? (Choose three.)___
A. VirtualMachine.Config.Settings privileges
B. an encrypted USB drive
C. Virtual Hardware version 13 or later
D. Virtual Hardware version 12 or later
E. EFI firmware
【多选题】
A user is given the "Virtual machine user (sample)" role in a vSphere 6.x environment. Which three permissions would the user be able to perform? (Choose three.)___
A. Reset a virtual machine.
B. Power on a virtual machine.
C. Move a host into a cluster.
D. Configure CD media.
E. Migrate a virtual machine with Storage vMotion.
【多选题】
Which three are supported upgrade processes for ESXi host? (Choose three.)___
A. using vSphere Auto Deploy
B. using a TFTP server
C. using Update Manager
D. using an
E. SXCLI command
【多选题】
When enabling Storage DRS on a datastore cluster, which three components are enabled as a result? (Choose three.)___
A. Space load balancing among datastore within the datastore cluster.
B. Initial placement for virtual disks based on space and I/O workload.
C. I/O load balancing among datastores within the datastore cluster.
D. Queue Depth alerting on disks within the datastore cluster.
E. Data de-duplication within the datastore cluster.
【多选题】
What are two features introduced in Network I/O Control version 3? (Choose two.)___
A. Bandwidth reservation per traffic type
B. Network resource pools
C. CoS tagging
D. Bandwidth guarantee to virtual machines
【多选题】
Which two correct virtual machine advanced configuration parameters will accomplish this? (Choose two.)___
A. isolation.device.edit.disable = “FALSE”
B. isolation.device.edit.disable = “TRUE”
C. isolation.device.connectable.disable = “FALSE”
D. isolation.device.connectable.disable = “TRUE”
【多选题】
Which three statements are correct regarding booting an ESXi Host from Fibre Channel SAN? (Choose three.)___
A. Direct connect topology is supported.
B. Each host must have its own boot LUN.
C. ESXi hosts do not require local storage.
D. Multipathing to a boot LUN on an active-passive array is supported.
E. Hosts can share one common boot LUN.
【多选题】
Which two tasks should a vSphere administrator perform if the vmkernel log reports VMFS metadata errors? (Choose two.)___
A. contact VMware technical support
B. reformat the datastore
C. check the device with VOMA
D. ignore the messages
【多选题】
Which two statements are true for a vCenterServer user account that is used for vSphere Data Protection (VDP)? (Choose two.)___
A. The user account must be assigned with Administrator role.
B. The password for the user account cannot contain spaces.
C. The user account should be created in the Single Sign-On domain
D. The user account cannot inherit required permissions from a group role.
【多选题】
Which three storage protocols are supported by Virtual Volumes? (Choose three.)___
A. FCIP
B. FCoE
C. iSCSI
D. NFS v3
E. NFS v4
【多选题】
A vSphere administrator observes a CPU spike on one of the web servers (view the Exhibit.) Which two statements can describe the cause of this activity? (Choose two.)___
A. The network packet size is too large.
B. VMware Tools is not installed.
C. Disk latency is present on the datastore.
D. The network packet size is too small.
【多选题】
Which three operations can cause VMFS metadata updates? (Choose three.)___
A. Restarting a VM using the guest OS.
B. Launching a VM console.
C. Migrating a VM with vMotion.
D. Powering a VM on or off.
E. Expanding a VMFS datastore.
【多选题】
*What two services run on all nodes in a vCenter Server HA cluster? (Choose two.)___
A. vmware-vmon
B. vmware-vpostgres
C. vmare-rbd-watchdog
D. vmware-vcha
【多选题】
Which two statements are true regarding Auto Deploy in version 6.5? (Choose two.)___
A. Auto Deploy can be configured and managed via PowerCLI.
B. Auto Deploy can be configured and managed via the vSphere Client.
C. Auto
D. eploy can be configured and managed via the vSphere Web Client.
【多选题】
What three options can improve network performance for a virtual machine? (Choose three.)___
A. MLD
B. TSO
C. NetFlow
D. LRO
E. SR-IOV
【多选题】
Which two storage technologies are supported for MSCS? (Choose two.)___
A. NFS
B. VAAI
C. iSCSI
D. FC
