刷题
导入试题
【多选题】
【多选题】NB-IoT定义的上行物理信道有( )。
A. NPUSCH
B. NPUCCH
C. NPRACH
D. NPHICH
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答案
AC
解析
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【多选题】中国5G将部署在哪些频段上?( )
A. 4.8-5.0G
B. 3.4-3.8G
C. 3.3-3.6G
D. 4.4-4.9G
【多选题】
【多选题】5G的三大应用场景分别为( )。
A. 低时延高可靠
B. 海量机器通信
C. 增强移动宽带
D. 热点高容量
【多选题】
【多选题】5G NR中,3GPP主要指定了两个频率范围,分别是( )。
A. FR3
B. FR2
C. FR1
D. FR4
【多选题】
【多选题】5G网络架构三个平面是( )。
A. 用户平面
B. 转发平面
C. 接入平面
D. 控制平面
【多选题】
【多选题】5G网络规划与2/3/4G相比存在很大不同,主要面临的挑战有( )。
A. 新业务的挑战
B. 新空口的挑战
C. 新频谱的挑战
D. 新架构的挑战
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【多选题】CDMA属于干扰受限系统,无线干扰的增加可能影响到系统的( )
A. 呼叫成功率
B. 覆盖
C. 容量
D. 掉话率
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【多选题】 CDMA2000 1X采用的语音编码技术是( )。
A. 8K QCLEP
B. 13K EVRC
C. 8K EVRC
D. 13K QCLEP
【多选题】
【多选题】目前移动通信系统中用到的多址方式有( )。
A. FDMA
B. CDMA
C. OFDMA
D. TDMA
【多选题】
【多选题】自由空间的路径损耗与哪些因素有关? ( )
A. 天线增益
B. 频率
C. 距离
D. 发射功率
【多选题】
【多选题】在移动通信网络中,天线下倾的主要作用是( )
A. 增强覆盖范围内的信号强度。
B. 减少干扰
C. 提高天线的增益
D. 使小区覆盖范围减少。
【多选题】
【多选题】关于天线的极化,描述正确的是: ( )
A. 双极化天线是指两个天线为一个整体,传播两个独立的波,各自具有不同的极 化方向。
B. 当接收天线的极化方向与来波的极化方向完全正交时,则接收天线完全接收不 到来波的能量。
C. 我们常用的单极化和双极化天线都属于线极化天线。
D. 天线辐射的电磁场的方向就是天线的极化方向。
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【多选题】在E-UTRA中,RRC状态有( )
A. RRC_CONNECTED
B. CELL_PCH
C. CELL_BCH
D. RRC_IDLE
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【多选题】TDL基站站址设计一般应满足下列要求( )。
A. 将天线的主瓣方向指向高话务密度区,可以加强该地区的信号强度,从而提高通话质量
B. 郊区的海拔很高的山峰一般考虑作为站址
C. 针对公路及山区覆盖的选址时,要充分利用地形特点,如公路拐弯处等开阔的地方
D. 在不影响网络结构的情况下,尽量选择现有的站址,以利用其机房电源铁塔等设施
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【多选题】上行覆盖弱的情况,通过哪几种方式解决?( )
A. 排除上行干扰
B. 调整天线的下倾角和方位角
C. 增加塔放
D. 增大RS功率
【多选题】
【多选题】在系统消息上查看LTE终端能力时,从NPO的角度,主要需关注UE的哪些方面能力和特性?( )
A. 支持的频段
B. 支持的加密算法
C. 支持的传输模式
D. 支持的终端能力等级
E. 是否支持同频异频切换
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【多选题】以下IMS中涉及的网元有( )。
A. E-CSCF
B. BGCF
C. MGCF
D. P-CSCF
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【多选题】4G附着跟3G附着的区别有( )
A. UE在附着流程中上报的临时标识不同
B. QoS协商机制不同
C. APN域名的解析格式不同
D. EPS在附着过程中会建立默认承载
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【多选题】CQI反馈的主要方式有:( )。
A. 宽带CQI
B. 子带CQI
C. 以上都正确
D. 窄带CQI
【多选题】
【多选题】下面哪种场景可以使用TTI bundling?( )
A. 对于覆盖面积大的小区中处于小区边缘的用户最好是使用TTI Bundling。
B. 如果UE的RSRQ和RSRP都很低,则最好是使用TTI Bundling
C. 如果SRS的SINR很低,则最好是使用TTI Bundling
D. 如果UE的RSRQ,RSRP和SRS的SINR都很低,则最好是使用TTI Bundling
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【多选题】工程参数检查内容( )
A. 天线线序
B. 扇区顺序
C. 天线型号
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【多选题】随机接入根据前导的不同分为哪两大类?( )
A. 采用专用前导基于非竞争的随机接入
B. 采用PreambleGroupA的随机接入
C. 采用PreambleGroupB的随机接入
D. 采用公共前导基于竞争的随机接入
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【多选题】对于LTE,适用于中/高速移动的MIMO模式包括:( )
A. 开环空间复用
B. 双流预编码
C. 多用户
D. 发射分集
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【多选题】制约基站布局的因素有哪些?( )
A. 业务密度分布
B. 建站条件
C. 经济条件
D. 场强覆盖
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【多选题】一个数据业务核心网不允许漫游业务为了支持漫游,重新配置了EPG作为S-GW,以下哪三项是需要增加的功能?( )
A. 漫游参考点-Gp
B. 基于承载的计费
C. 法律监听
D. 基于业务的计费
E. 漫游参考点-S8
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【多选题】单站验证测试过程中测试Log保存需要注意哪些?( )
A. 测试Log文件一般按照适度大小分段保存
B. 测试Log文件不能过多的分段保存
C. 测试Log文件分段保存可以提高测试效率
D. 测试Log文件尽可能大,然后再保存
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【多选题】公共搜索空间的聚合等级为( )。
A. 2
B. 4
C. 8
D. 1
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【多选题】 MAC层主要功能包括( )。
A. HARQ重传
B. 上下行调度
C. 无线承载(RB)管理
D. 执行头压缩
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【多选题】可采用的LTE话音方案包括:( )。
A. CSFB
B. SRVCC
C. 双待机
D. VoLTE
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【多选题】NB-IoT系统中,使用的子载波间隔为( )。
A. 15KHz
B. 180 KHz
C. 22.5KHz
D. 3.75KHz
【多选题】
【多选题】NPBCH的作用有( )。
A. 传递NB-SIB1的调度信息
B. 传递接入限制信息
C. 传递操作模式信息
D. 传递系统帧号
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【多选题】5G的含义包括:无所不在,超宽带,( )的无线接入。
A. 高密度
B. 高可靠
C. 高可信
D. 低延时
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【多选题】在NR下,满足如下哪几个条件之后,UE才会验证接收到的PDCCH是否用于SPS的激活和释放?( )
A. PDCCH的CRC校验位使用CS-RNTI进行加扰
B. NDI域为0
C. NDI域为1
D. PDCCH的CRC校验位使用SPS C-RNTI进行加扰
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【多选题】在相同的PRB中,下面哪种PUCCH不支持multiplexing(复用)能力?( )
A. PUCCHformat 1
B. PUCCHformat 2
C. PUCCHformat 3
D. PUCCHformat 0
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【多选题】3GPP对5G定义了三大场景:( ),( )和( )。
A. mMTC
B. ETC
C. URLLC
D. eMBB
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【多选题】5G所支持的子载波间隔中,支持所有的物理信道的是( )。
A. 15KHz
B. 30KHz
C. 60KHz
D. 120KHz
E. 240KHz
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【多选题】CDMA2000 1x系统前向信道包括哪些?( )
A. 接入信道
B. 同步信道
C. 寻呼信道
D. 导频信道
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【多选题】IPv6相对于IPv4的改进说法正确的是 ( )?
A. 更大的地址空间和更小的路由表
B. 加入了对自动配置 (Auto-configuration)的支持
C. 增强的组播(Multicast)支持以及对流的支持 (Flow-control)
D. 更高的安全性和QoS
【多选题】
【多选题】以下哪些是 IPv6 的特征? ( )
A. 支持地址自动配置
B. 通过流标签识别数据流
C. 支持 Mobile IP
D. 多报文头嵌套实现扩展
【多选题】
【多选题】关于 IPv6 和 IPv4 的区别,以下哪些描述是正确的( )?
A. IPv6 不支持子网划分
B. IPv6 不支持广播地址?
C. IPv6 不支持报 文分片
D. IPv6不支持安全认证
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【多选题】要做好网络规划,必须了解无线传播的特性,一般的无线传播损耗主要包括:( )
A. 空间传播损耗
B. 快衰落损耗,如多径效应
C. 阴影衰落损耗,如慢衰落损耗
D. 其他损耗,如穿透损耗等
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Which two statements are true about Highly Available vSphere Auto Deploy infrastructure? (Choose two.)___
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Which two statements are true for NFS v4.1 firewall behavior? (Choose two.)___
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C. It sets allowed. All flag to FALSE.
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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.)___
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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.)___
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E. Average active memory on each VM over time.
F. CPU reservations on each VM.
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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.
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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
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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
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D. FQDN
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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
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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.
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E. The virtual machine has snapshots present.
【多选题】
Which two statements are true for Predictive DRS? (Choose two.)___
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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
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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
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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).
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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
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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
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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
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