EPC知识考试(试卷编号141)

EPC知识考试(试卷编号141)
1.[单选题]输入（）命令，查询各单板版本激活时间及文件大小等信息。

To query the version activation time and file size of each board, run the command ( ).
A)#show software
B)#show running-config
C)#show xgw info
D)#show pdsn info
答案:A
解析:
2.[单选题]EV-DO 的认证分两部分：AN-level认证和IP-level认证，AN-AAA作为AN的认证服务器，承担AN-Level级的认证功能。

AN-level位于AT和AN之间，被称为Inner CHAP认证，通过（）接口实现接入鉴权。

EV-DO authentication is divided into two parts: AN-level authentication and IP-level authentication. AN-AAA shoulders the AN-Level authentication function as the authentication server of AN. The AN-level authentication is located between the AT and the AN, known as Inner CHAP authentication, and the access authentication is carried out through the ( ) interface.
A)A8
B)A9
C)A10
D)A12
答案:D
解析:
3.[单选题]SGSN在路由过程中需要在不同的接口协议之间进行转换，这一过程称为（）。

During the routing process, the SGSN needs to make conversion between different interface protocols. This process is called ( ).
A)寻址Addressing
B)交换Exchange
C)适配Adaptation
D)转发Forward
答案:D
解析:
4.[单选题]关于xGW(PDSN)，下列哪个命令可以显示当前的路由表？On the xGW(PDSN), the command ( ) is used to get the current routing table.
A)show ip route
B)show ip routing table
答案:C
解析:
5.[单选题]____子系统是由各信令和业务处理模块组成，主要完成与其他网元间的信令和业务处理。

A)FE
B)UDS
C)PROVISION
D)OMM
答案:A
解析:
6.[单选题]在运营商没有特别要求的情况下，我们一般将哪个计费通道默认设置为合并话单通道When the carrier does not have any special requirement, we usually set the following channel as the merger CDR channel by default: ( ).
A)CH1
B)CH2
C)CH0
D)CH3
答案:C
解析:
7.[单选题]v4 HSS的omp模块配置，系统默认模块号为：
A)0
B)1
C)2
D)3
答案:B
解析:
8.[单选题]DPI一级规则中的优先级关系中那个最高？
A)优先级字段
B)深度优先
C)配置优先
D)交叉优先
答案:A
解析:
9.[单选题]如果想实现多个PDSN之间pool的功能，使用哪种方法比较合理？（ ）To realize the pool function among multiple PDSNs, which of the following methods is reasonable? ( )
C)在无线侧上配置PDSN的主备关系。

Configure the master and slave relationship of PDSNs on the wireless side.
D)在PDSN上配置根据用户的IMSI取模。

Make MOD calculation upon the user's IMSI on the PDSN.
答案:B
解析:
10.[单选题]xGW GGSN开启哪项功能时，不需要申请新的License？When the ( ) function is enabled on the uMAC GGSN, we do not need to apply for a new license.
A)xDPI
B)PCC
C)Lawful Interception
D)以上都不是None of the above
答案:D
解析:
11.[单选题]（）是PS域用的手机临时的识别码，代替手机的识别码IMSI用于PS域业务。

( ) is a temporary mobile subscriber identity in the PS domain. Used in PS domain services, it
is a substitute for the International Mobile Station Identity (IMSI)
A)TMSI
B)P-TMSI
C)NSAPI
D)RAB ID
答案:B
解析:
12.[单选题]V4 uMAC，通过web登录网管服务器时，使用的http端口号为？ ( )
A)2322
B)2323
C)2233
D)3322
答案:B
解析:
13.[单选题]xGW系统中，（ ）子系统对外提供统一接口，主要实现系统配置、性能采集、告警通知、信令跟踪以及各种本地维护工具功能。

In the xGW system, the ( ) subsystem provides a unified interface to the external, which achieves the following functions: system configuration, performance statistics collection, alarms and notifications, signaling trace and various local maintenance tools.
A)PS
D)DB
答案:B
解析:
14.[单选题]xGW(PDSN)的路由表如下，目的IP是10.128.0.199的报文将会转发到（）。

Dest NextHop *> 0.0.0.0/0 10.42.222.1 *> 10.128.0.0/17 10.42.222.4 *> 10.128.0.0/18
10.42.222.5 *> 10.128.0.0/24 10.42.222.3 *> 10.128.0.0/25 10.42.222.2 The route table of xGW(PDSN) is shown as below. Packets with a destination IP address of 10.128.0.199 will be transferred to ( ). Dest NextHop *> 0.0.0.0/0 10.42.222.1 *> 10.128.0.0/17 10.42.222.4 *> 10.128.0.0/18 10.42.222.5 *> 10.128.0.0/24 10.42.222.3 *> 10.128.0.0/25
10.42.222.2
A)10.42.222.2
B)10.42.222.3
C)10.42.222.4
D)10.42.222.5
答案:B
解析:
15.[单选题]____是ZXUN USPP的数据库子系统，主要完成用户数据的存储和管理。

A)FE
B)UDS
C)PROVISION
D)OMM
答案:B
解析:
16.[单选题]xGW同LIG进行对接时，需要哪些地址互通？（ ）When the xGW interconnects with the LIG, it needs to communicate with the following IP addresses: ( ).
A)需要同LIG的1/2口互通就可以了。

It only needs to communicate with X1 and X2 interfaces of the LIG.
B)需要同LIG的1/2互通，LIG的3口媒体面互通。

It needs to communicate with X1 and X2 interfaces of the LIG, and the media plane of X3 interface on the LIG.
C)需要同LIG的1/2口互通，LIG的3口信令面互通。

It needs to communicate with X1 and X2 interfaces of the LIG, and the signaling plane of X3 interface on the LIG.
D)需要同LIG的1/2口互通，LIG的3口信令和媒体面都要互通。

It needs to communicate with X1 and X2 interfaces of the LIG, and signaling and media planes of X3 interface on the LIG.
答案:D
解析:
when a new local IP pool is added. Since the global number of ACL entries is limited, we need to plan the IP pool reasonably. On the following address segment, the number of ACL entries is the least: ( ).
A)segment 10.123.1.0 10.123.1.255 mask 255.255.255.0 cpulocation 2/1
B)segment 10.123.1.1 10.123.1.254 mask 255.255.255.0 cpulocation 2/1
C)segment 10.123.1.1 10.123.1.255 mask 255.255.255.0 cpulocation 2/1
D)segment 10.123.1.2 10.123.1.255 mask 255.255.255.0 cpulocation 2/1
答案:A
解析:
18.[单选题]使用串口线进行独立单板的调试，超级终端设置的波特率应该为（）。

While debugging the independent board through the serial cable, we should set the baud rate on the Hyper Terminal to ( ).
A)9600
B)11500
C)115200
D)9650
答案:C
解析:
19.[单选题]在LTE EPC组网环境里,SGW必须连接以下哪个网元？
A)MME
B)HSS
C)MGW
D)MSC
答案:A
解析:
20.[单选题]在xGW(PDSN)的信令中，下面哪条信令表示终端主动发起释放PPP连接？Among
signaling messages of the xGW(PDSN), the following signaling message shows that the terminal initially releases the PPP connection: ( ).
A)ST_PPP_SIGNAL_PPP_LCP_TER_REQ_RCV
B)ST_PPP_SIGNAL_PPP_LCP_TER_REQ_SEND
C)ST_PPP_SIGNAL_PPP_IPCP_TER_REQ_RCV
D)ST_PPP_SIGNAL_PPP_IPCP_TER_REQ_SEND
答案:A
解析:
21.[单选题]关于地址池，下面描述错误的是（）。

Which of the following statements is wrong about the address pool? ( )
C)APN配置的VRF需要和地址池的VRF一致The VRF configured in the APN should be the same with the VRF of the address pool.
D)某个CPU GROUP上新增加地址池时，会导致整个GSU单板的业务瞬断When you add an IP address pool on one CPU GROUP, all services of the entire GSU board will be disconnected shortly.
答案:B
解析:
22.[单选题]ETCA一个机架最大支持（）个机框。

One rack supports ( ) ETCA shelves at maximum.
A)2
B)3
C)4
D)5
答案:B
解析:
23.[单选题]GGSN中用于跟OCS对接的接口是（）。

In GGSN,() is the interface for interconnection with OCS.
A)Gx
B)Gy
C)Gi
D)Gn
答案:B
解析:
24.[单选题]在遇到设备故障时，我们常使用（）和失败观察来确定当前用户的信令状况。

A)性能统计
B)专业维护
C)当前告警
D)用户跟踪
答案:D
解析:
25.[单选题]SGSN各个单板的128面的地址的计算公式是（）。

How to calculate the 128 plane IP address of each board on the SGSN? ( )
A)128.(128+机架号).（16*cpu+1）.(128+机框号*32+槽位号) 128.(128+rack
number).(16*cpu+1).(128+shelf number*32+slot number)
B)128.(128+机架号).（16*cpu+2）.(机框号*32+槽位号) 128.(128+rack
number).(16*cpu+2).(shelf number*32+slot number)
D)128.(128+机架号).（16*cpu+1）.(机框号*32+槽位号) 128.(128+rack
number).(16*cpu+1).(shelf number*32+slot number)
答案:A
解析:
26.[单选题]DPI规则管理中，GUI界面无法打开可能原因可能是（）。

In DPI rule management, if the GUI window fails to open, what is the possible cause? ( )
A)配置了中文的规则别名configured with Chinese rules alias
B)配置了英文的规则别名configured with Rules of the English alias
C)rulesi相同configured same rulesi
D)apn名称相同导致的configured same APN
答案:A
解析:
27.[单选题]以下哪种网元不参与PDP修改流程？Which of the following NEs does not participate in the PDP modification process?
A)HLR
B)UE
C)RNC
D)SGSN
答案:A
解析:
28.[单选题]下面哪个设备不能发起PDP上下文去激活流程？ （ ）
A)MS
B)SGSN
C)GGSN
D)HLR
答案:D
解析:
29.[单选题]GTP-C解码后发现有PDP ACTIVE请求，会根据（）调用数据库提供的接口查询是否有相应GTP-C PDP上下文存在。

If the "PDP ACTIVE" request is found after GTP-C decoding, the system uses the interface provided by the database according to ( ), to check whether the corresponding GTP-C PDP context exists or not.
A)IMSI＋NSAPI
B)TEID-C＋NSAPI
C)IMSI＋TLLI
D)TEID-C＋TLLI
答案:A
30.[单选题]Diameter链路对接是HSS侧端口号为（ ）。

A)3866
B)3867
C)3868
D)3869
答案:C
解析:
31.[单选题]xGW 系统升级前一般先需要设置FTP 的默认路径，该默认路径为（）。

Before upgrading the xGW system， we need to set the FTP default path, which is ( ).
A)datadisk0
B)datadisk1
C)sysdisk0
D)sysdisk1
答案:C
解析:
32.[单选题]PDSN DPI bin文件的存放路径（）。

The PDSN DPI bin file is saved under the path ( ).
A)/sysdisk0/DPI/1/PDSN
B)/sysdisk0/DPI/XDPI/
C)/sysdisk0/EXCINFO
D)/datadisk0/pmop
答案:A
解析:
33.[单选题]在SGSN V4.10.10版本中，一个SBCJ刀片上最多可以配置多少个模块？
A)8
B)4
C)6
D)10
答案:A
解析:
34.[单选题]调试attach业务时, 信令跟踪中必需选择的协议是（）。

A)FRNS
B)LLC
C)GMM
D)SM
答案:C
35.[单选题]xGW的DPI文件配置，生成的文件名的后缀是（ ）。

For the DPI file of the xGW, the filename suffix is ( ).
A)bin
B)excel
C)cap
D)set
答案:A
解析:
36.[单选题]xGW单板正常运行时（）。

A)RUN灯常亮
B)RUN灯长灭
C)RUN灯慢闪（1Hz）
D)RUN灯快闪（5Hz）
答案:C
解析:
37.[单选题]当配置MAC地址偏移时（在T8000平台的xGW中），这个偏移是相对于（）的mac地址而言的。

A)接口板第一个网口
B)STDY 口
C)MGMT 口
D)AUX口
答案:C
解析:
38.[单选题]对于单板HOST灯，下列描述错误的是？ ( )
A)绿灯1Hz频率闪烁：正常工作
B)红灯闪烁：工作异常、有告警
C)红灯频率越高表示告警级别越高
D)主备状态指示
答案:D
解析:
39.[单选题]安装LMT软件时，本节点编号范围（）。

During installation of the LMT software, the ID range of the local node should be set to ( ).
A)[150,200]
B)[201,249]
C)[250,300]
D)[200,300]
40.[单选题]下面说法正确的是（）。

Which of the following statements is correct? ( )
A)主用AAA宕机后，PDSN会自动使用备用AAA，当原主用AAA恢复正常，会自动切到原主用AAA。

When the master AAA is down, PDSN will automatically switch to the slave AAA; after the original master AAA is recovered to normal, PDSN will automatically switch back to the original master AAA.
B)主用AAA宕机后，PDSN要手动切换到备用AAA，当原主用AAA恢复正常，要手动切到原主用AAA。

When the master AAA is down, you need to manually switch the PDSN to the slave AAA; after the original master AAA is recovered, you need to manually switch the PDSN back to the original AAA.
C)主用AAA宕机后，PDSN要手动切换到备用AAA，当原主用AAA恢复正常，会自动切到原主用AAA。

When the master AAA is down, you need to manually switch the PDSN to the slave AAA; after the original master AAA is recovered, the PDSN can automatically switch back to the original master AAA.
D)主用AAA宕机后，PDSN会自动切换到备用AAA，当原主用AAA恢复正常，要手动切到原主用AAA。

When the master AAA is down, the PDSN can automatically switch to the slave AAA; after the original master AAA is recovered, you need to manually switch the PDSN back to the original master AAA.
答案:D
解析:
41.[单选题]EMS安全管理提供了角色、角色集、用户和部门管理功能。

以下说法错误的是（）。

EMS Security Management provides functions of role management, role set management, user management and department management. Which of the following statements is wrong? ( ) A)用户在行政规划上隶属于某个部门A user belongs to a specific department in terms of administrative planning.
B)用户管理权限由其所属的角色集和角色决定Management rights of a user are determined by the role set and the role the user belongs to.
C)角色的权限仅由定义的操作集决定The rights of a role are only defined by the operation set.
D)一个操作集是一个或多个操作权限的集合An operation set is a collection of one or multiple operation rights.
答案:C
解析:
42.[单选题]V4uMAC里，21和22槽位板卡的物理单板名称是（）
A)SBCW
B)EGFS
C)EGBS
D)EMSI
43.[单选题]PDSN通过发送（）给PCF请求释放A10连接。

PDSN releases the A10 connection by sending ( ) to the PCF.
A)A11-Registration Update
B)A11-Registration Request
C)RADIUS Accounting-Request
D)RADIUS Accounting-Response
答案:A
解析:
44.[单选题]SGSN与SCF网元之间的接口为（）。

A)Gs
B)Ga
C)Gp
D)Ge
答案:D
解析:
45.[单选题]ZXUN USPP系统与MME对接接口为____
A)S11
B)S6a
C)S3
D)S6d
答案:B
解析:
46.[单选题]uMAC系统组网中，Gs口是和（ ）直接的接口。

In the uMAC system networking structure, the Gs interface is directly connected to the ( ).
A)GGSN
B)RNC
C)MSC
D)HLR
答案:C
解析:
47.[单选题]下列关于DO用户的流量总和的计算方法，说法正确的是（）。

A)“PDSN使用简单IP业务且SO为33的前向流量总数”和“PDSN使用简单IP业务且SO为33的反向流量总数”的总和
B)“PDSN使用简单IP业务且SO为59的前向流量总数”和“PDSN使用简单IP业务且SO为59的反向流量总数”的总和
D)“PDSN使用简单IP业务且SO为59的前向流量总数”和“PDSN使用简单IP业务且SO为33的反向流量总数”的总和
答案:B
解析:
48.[单选题]xGW的GSU单板的控制面地址计算公式是（ ）。

A)168.0.128+槽位号.16×CPU号168.0.128+slot number.16×CPU ID
B)168.0.129+槽位号.16×CPU号168.0.129+slot number.16×CPU ID
C)168.0.130+槽位号.16×CPU号168.0.130+slot number.16×CPU ID
D)168.0.131+槽位号.16×CPU号168.0.131+slot number.16×CPU ID
答案:B
解析:
49.[单选题]关于DT功能，下面描述错误的是（）。

Which of the following statements is wrong about the DT function? ( )
A)实现DT功能后，控制面仍由两条隧道组成After the DT function is realized, the control plane still consists of two tunnels.
B)实现DT功能后，用户面仍由两条隧道组成After the DT function is realized, the user plane still consists of two tunnels.
C)SGSN 为RAN提供GGSN TEID和用户面地址，为GGSN 提供 RAN TEID 和用户面地址The SGSN provides GGSN TEID and user plane IP for the RAN, and provides RAN TEID and user plane IP for the GGSN.
D)DT功能不支持Gb接入方式The DT function does not support the Gb access mode.
答案:B
解析:
50.[单选题]uMAC SGSN OMM网管日志不包括（）。

OMM logs of the uMAC SGSN do not include ( ).
A)操作日志operation log
B)安全日志security log
C)系统日志system log
D)告警日志alarm log
答案:D
解析:
51.[单选题]在设置Application资源时，设置StartProgram属性为（）。

While setting the Application resource, we should set the attribute of StartProgram to ( ).
A)/home/omc/zxhome/omcboot/omcstop
B)/home/omc/zxhome/omcboot/omcclean
C)/home/omc/zxhome/omcboot/omcstart
解析:
52.[单选题]UOMP单板正常运行时，指示灯显示状态正确的是（）？Which of the indicator status is correct when the UOMP board is working properly? ( )
A)OOS灯熄灭indicator OOS is off
B)OK灯熄灭indicator OK is off
C)HOST灯熄灭indicator HOST is off
D)H/S灯1HZ闪烁indicator H/S is flashing in 1HZ
答案:A
解析:
53.[单选题]终端测试激活过程中，哪些原因会造出GGSN上下文响应失败？During the terminal activation test process, which of the following causes may result in the GGSN context response failure? ( ).
A)漏配GTPU地址The GTPU address is not configured.
B)Gi口不通The Gi interface is not connected through.
C)未开启鉴权Authentication is disabled.
D)未开启授权Authorization is disabled.
答案:A
解析:
54.[单选题]设定本局的信令点编码用于（）协议的寻址。

The SPC of the local office is set for ( ) protocol addressing.
A)SCCP
B)RANAP
C)GTP
D)MTP3
答案:D
解析:
55.[单选题]ZXUN xGW软件安装，MPU版本加载过程中，设置单板启动方式，第一次启动和版本正确加载后分别该用什么方式？ ( )
A)
B)1.local flash 2.local flash
C) 2. local flash
D)1.local flash
答案:C
解析:
56.[单选题]PDSS系统中，AAAC地址和NAS地址之间的关系，下面说法对的是？（ ）
C)AAAC和NAS是同一个地址，NASIP用来同WAG对接用的，AAAC用来和AAA对接用的。

D)AAAC和NAS不是同一个地址，NASIP用来同WAG对接用的，AAAC用来和AAA对接用的。

答案:A
解析:
57.[单选题]AAA OMC的admin登录密码给忘记了，需要初始化一下密码，下面哪个语句是对的？（）
A)Update sm_usertable set password = '8779428B6CB83531' where username='admin'
B)Update sm_usertable modify password = '8779428B6CB83531' where username='admin'
C)Update sm_user_table set password = '8779428B6CB83531' where username='admin'
D)Update sm_user_table modify password = '8779428B6CB83531' where username='admin'
答案:C
解析:
58.[单选题]ZXWN CG业务处理机所产生的数据如话单文件、数据库等存储在（ ）。

A)网上
B)服务器的硬盘
C)共享磁盘
D)计费中心
答案:C
解析:
59.[单选题]EMS可以周期性地定时执行告警统计任务，系统支持将xGW告警统计结果输出为哪些格式的文件？The EMS server can periodically carry out alarm statistics tasks. The system supports exporting the alarm statistics results of the xGW into files of the following formats: ( ).
A)csv
B)xml
C)xls
D)doc
答案:D
解析:
60.[单选题]CCG需要支持在线计费和离线计费两种方式。

对于在线计费CCG要与上层计费系统（）进行信令交互。

The CCG supports both online charging and offline charging. For the online charging mode, the CCG exchanges signaling with (), which is the upper-level billing system.
A)AAA
B)HAAA
C)OCS
D)PPS
61.[单选题]EPC HSS与SGSN之间的接口为___接口，用于更新用户位置信息并向SGSN发送用户签约和鉴权信息
A)S11
B)S6a
C)S3
D)S6d
答案:D
解析:
62.[单选题]在GGSN系统割接前，需要检查单板内存，在GGSN中查看内存状态的命令是（）。

Before GGSN system cutover, we need to check board memory. To check the memory status in the GGSN, run the command ( ).
A)show memory
B)show host
C)show processor
D)show hardware
答案:C
解析:
63.[单选题]执行（）命令可以查看到PFU上每个接口的物理MAC地址。

By running the ( ) command, we can view the MAC address of each physical interface on the PFU board.
A)show interface
B)show running-config
C)show ip interface
D)show ip interface brief
答案:A
解析:
64.[单选题]xGW PDSN有3种类型的GSU单板，分别为GSU-0、GSU-1、GSU-2，其中GSU-2比GSU-0多了（ ）块子卡。

A)1
B)2
C)3
D)4
答案:B
解析:
65.[单选题]xGW-PDSN系统中，CU网元必须在哪种类型的单板上配置？（ ）
A)MPU
66.[单选题]用户附着牵涉到的网元不包括（）网元。

Which of the following NEs is not involved in subscriber attachment?( )
A)RNC
B)SGSN
C)HLR
D)GGSN
答案:D
解析:
67.[单选题]( ) 用来记录GPRS终端在GGSN中与分组数据业务有关的计费信息。

A)SCDR
B)MCDR
C)GCDR
D)S-SMO/SMT-CDR
答案:C
解析:
68.[单选题]替换现网GGSN时，一般常用的操作方案是（）。

To swap the GGSN in the existing network, we usually apply the following operation plan: ( ).
A)割接当晚直接将现网的SGSN的所有APN的流量指向我们的GGSN.On the night of cutover, direct the traffic of all APNs from the current SGSN to ZTE GGSN.
B)先同局方确定，可以考虑先割接几个APN到我们的GGSN下，待观察一段时间后，再逐步割接其他的APN到我们的GGSN下。

Discuss with the carrier first. We can cut over some APNs to ZTE GGSN first, and cut over other APNs to ZTE GGSN gradually after making observation for some time.
C)同局方确定，可以考虑先割接少量用户到我们的GGSN下，该用户的所有APN都指向我们的GGSN。

Discuss with the carrier. We can swap some subscribers to ZTE GGSN first, and direct
all APNs of these users to ZTE GGSN.
D)以上方案都可行。

All the above operation plans
答案:B
解析:
69.[单选题]考虑到用户报文在Gn/Gp口可能经过多层隧道封装，为了避免报文分片，推荐在xGW GGSN的APN配置中将Max Segment Size (MSS)设为（ ）。

In consideration that user packets are encapsulated through multi-layer tunnels on the Gn/Gp interface, to avoid packet segments, it is recommended to set Max Segment Size (MSS) in APN configuration on the
答案:A
解析:
70.[单选题]用来建立GGSN与SGSN之间逻辑链路的消息为（）。

The ( ) message establishes a logic link between GGSN and SGSN.
A)Cell Selection
B)Attach
C)PDP Context Activation
D)RA update
答案:C
解析:
71.[单选题]手机发起的PDP激活请求中携带的APN为cmnet，用户签约的APN为*，则SGSN选择哪个APN来激活？ （ ）If the MS carries the APN "cmnet" in the PDP activation request, and the subscribed APN is "*", the SGSN selects the following APN to activate the PDP: ( ).
A)使用手机携带的APN来激活Use the APN carried by MS
B)使用SGSN配置的默认APNUse the default APN configured in SGSN
C)拒绝激活Reject the activation request
D)使用任意APN 激活Use any APN to activate
答案:A
解析:
72.[单选题]下列哪个单板是V4 SGSN的媒体面交换板？ ( )
A)SBCJ
B)EGBS
C)EGFS
D)EMSI
答案:C
解析:
73.[单选题]信令跟踪工具在本机参数设置里可以将数据缓冲区最大记录数设置为多少？ ( )
A)2000条
B)5000条
C)10000条
D)以上都是
答案:D
解析:
A)Fast mode
B)Bios hard disk
C)Os setup
D)Bios USB
答案:B
解析:
75.[单选题]MME与MME之间的接口是（）
A)S3
B)S5
C)S10
D)S11
答案:C
解析:
76.[单选题]V4刀片在下列哪种情况下可以安全下电？（ ）
A)OOS灯慢闪
B)OOS灯长亮
C)HOST灯慢闪
D)H/S灯长亮
答案:D
解析:
77.[单选题]在配置SGSN数据的时候, 本局移动数据配置中的SGSN信令IP地址, 应该配置成为（）。

A)SGSN GTP-C地址
B)SGSN GTP-U地址
C)GGSN GTP-C地址
D)GGSN GTP-U地址
答案:A
解析:
78.[多选题]uMAC系统组网中，下面哪些接口建议使用OSPF？（ ）In the uMAC system networking structure, it is recommended to use OSPF for the following interfaces: ( ).
A)Gn
B)IuPS
C)Gb
D)Gr
答案:ABC
解析:
B)GGSN动态分配
C)Radius Server分配
D)DNS分配
答案:ABC
解析:
80.[多选题]分组域的移动性管理的功能, 主要是依靠（ ）结合相应用户的MM上下文来配合实现的。

A)MS
B)HLR
C)SGSN
D)GGSN
答案:ABC
解析:
81.[多选题]动态偶联标志的四元组是指（）？
A)本端地址
B)对端地址
C)本端端口
D)对端端口
答案:ABCD
解析:
82.[多选题]xGW GGSN单板倒换需要注意的事项有（）。

During switching of xGW GGSN boards, you need to pay attention to the following items: ( ).
A)禁止人工复位或插拔主用MPU或GSU单板It is forbidden to manually reset or plug out the master MPU or GSU.
B)备用MPU上电后A0分钟内禁止进行MPU主备倒换Within A0 minutes after the slave MPU is powered on, it is forbidden to perform master/slave switchover of the MPU.
C)备用GSU单板或CPU上电后E分钟之内禁止进行该GSU单板或GSU CPU的主备倒换Within E minutes after the slave GSU board or the MPU is powered on, it is forbidden to perform
master/slave switchover of this GSU board or the GSU CPU.
D)禁止使用redundancy switch sc force命令强制倒换MPU单板It is forbidden to switch over the MPU board by force by running the "redundancy switch sc force" command.
答案:ABCD
解析:
83.[多选题]IPsec引进了完整的安全机制，（）确保用户数据可以通过安全的IPsec隧道实现端到端的安全、保密传输。

IPsec introduces a complete security mechanism, and ( ) ensures that the user data can realize end-to-end secure and encrypted transmission through the
B)包括加密Including encryption
C)认证功能Authentication function
D)数据防篡改功能Data tamper-proof features
答案:BCD
解析:
84.[多选题]加载OMP后激活版本时，需要哪几个命令？（ ）
A)INSTALL_ADD_REMOTE
B)INSTALL_VALIDATE_DFT
C)INSTALL_ACTIVE_DFT
D)LOAD_PKG
答案:ABC
解析:
85.[多选题]在xGW(PDSN)中，以下CPU不是A+A备份工作方式的有？In the xGW(PDSN), the following CPUs do not work in A+A backup mode: ( ).
A)slb
B)cu
C)pdsn
D)xdpi
答案:BD
解析:
86.[多选题]下面哪些情况，SGSN可以发起PDP上下文修改流程？（）Under the following situations, SGSN will initiate the PDP update flow: ( ).
A)RAB重建，发生QoS改变During RAB recreation, the QoS changes.
B)PDP上下文处于激活状态下，SGSN之间的路由区更新When the PDP context is in activated state, the routing area between SGSNs will be updated.
C)当HLR向SGSN插入用户数据且PDP上下文处于激活状态When the PDP context is in activated state, the HLR inserts user data to the SGSN.
D)PDP上下文处于激活状态下，SGSN内的路由区更新When the PDP context is in activated state, the routing area inside the SGSN is updated.
答案:ABC
解析:
87.[多选题]关于xGW的PCC功能，charge-control的配置需要关联哪些参数？About the PCC function of the xGW, which of the following parameters should be associated in charge-control configuration?
A)rule base ID
B)template ID
答案:ACD
解析:
88.[多选题]当升级完成后出现下列情况，可认为升级失败，需要回退版本：（）。

If the following situations occur after upgrade, we can confirm that the upgrade fails and we need to recover the version: ( ).
A)个别用户无法接入网络Some users can not access the network.
B)版本升级失败，单板无法正常工作。

Version upgrade fails, and the board cannot run normally.
C)整个版本升级完后，经测试，业务功能不能正常实现，必须要求回退。

After the entire version upgrade is completed, according to service tests, service functions cannot be implemented, so the upgrade must be rolled back.
D)与所内联系确认回退The R&D center confirms that rollback is necessary.
答案:BCD
解析:
89.[多选题]处理刀片的OK指示灯熄灭的原因是（）？What's the reason of "the ok indicator is off" in processing board ?
A)单板未上电the board is not power on
B)单板未插紧the board is not insert properly
C)单板工作正常the board is working normally
D)单板有告警there's alarm in the board
答案:AB
解析:
90.[多选题]以下哪些属于V4 ZXUN USPP硬件模块？
A)DPBX0
B)SIPI
C)OMP
D)DPBA2
答案:AD
解析:
91.[多选题]PDP上下文是记录PDP状态及相关信息的文件，存在于（ ）中。

A PDP context is the file that records the status of the PDP and related information. It is located in ( ).
A)MS/UE
B)SGSN
C)GGSN
D)RNC
答案:ABC
92.[多选题]GTP的主要功能有哪些
A)路径管理功能
B)位置管理功能
C)隧道管理功能
D)移动性管理功能
答案:ABCD
解析:
93.[多选题]CCG为内容计费网关，在线计费方式可以实现（）。

On the CCG (Content Charging Gateway), the online charging mode can achieve the following functions: ( ).
A)基于OCP协议的承载层流量或时长计费采集；Collect charging information based on the traffic or duration of the bearer layer according to the OCP protocol.
B)基于OCP协议的内容流量或时长计费采集；Collect charging information based on contents traffic or duration according to the OCP protocol.
C)能够根据上层计费系统的指示对用户的在线计费会话进行控制；Control users' online charging sessions according to indications of the upper-layer billing system.
D)基于内容计费UDR的承载层流量或时长计费采集；Collect charging information based on the traffic or duration of the bearer layer according to the contents charging UDR.
答案:ABC
解析:
94.[多选题]WPS Qos 协商主要发生在哪些设备上？In a WPS network, Qos negotiation happens on the following Nes: ( ).
A)UE
B)SGSN
C)GGSN
D)HLR
答案:ABC
解析:
95.[多选题]关于IP协议栈的配置，割接前需要做哪些检查？Before cutover, we need to check the following IP protocol stack configurations: ( ).
A)检查业务地址配置Check service IP address configuration.
B)检查OSPF配置Check OSPF configuration.
C)检查各接口有无丢包现象Check whether there is any packet loss on each interface.
D)检查VRF配置Check VRF configuration.
答案:ABCD
解析:
96.[多选题]UE处于idle状态的特点是
C)MME的EMM上下文中没有有效的路由信息
D)UE不可及
答案:AB
解析:
97.[多选题]SGSN可接几路外部时钟源？The SGSN can connect ( ) external clock sources.
A)A
B)B
C)C
D)D
答案:ABCD
解析:
98.[多选题]割接前，关于计费检查的说明正确的是（）。

Which of the following statements are correct about billing checks before cutover? ( )
A)eCG上要定义所有处理业务的CPU组的CG AGENT地址，不要遗漏On the eCG, we need to define CG AGENT addresses of all CPU groups processing services.
B)配置话单定时备份,备份到其他客户端上。

We need to configure scheduled backup of CDRs and back up CDRs to other clients.
C)磁阵管理口配置上管理IP地址，磁阵磁盘镜像方式为RAIDA+0方式。

We need to configure the management IP address on the management port on the disk array, and set the mirroring mode of the disk array to RAIDA+0.
D)SPU处于work状态，异常话单目录中无文件即无异常话单。

The SPU should be in work status, and there's no file in directory that stores the abnormal CDR, indicating that there is no exception CDR.
答案:ABCD
解析:
99.[多选题]xGW中有哪些单板会影响系统的总体容量？In the xGW, which boards can affect the system capacity?
A)MPU
B)GSU
C)SFU
D)PFU
答案:BCD
解析:
100.[多选题]AAA的功能包括（）。

The AAA carries out the following functions: ( ).
A)authentication
B)authorization
答案:ABC
解析:
101.[多选题]GGSN上线之前，需要检查SNMP配置，下面说法正确的是（）。

Before online GGSN, need to check the SNMP configuration, which statements are correct?
A)snmp-server host vrf mng 配置了EMS的地址。

Configure the EMS ip address in snmp-server host vrf mng.
B)snmp-server trap-source配置了xGW的管理口地址。

Configure the xGW manager interface ip in snmp-server trap-source.
C)snmp-server community配置了读串和写串。

Configure the read&write string in snmp-server community.
D)snmp-server user配置了不同权限的用户。

Configure the users with different kind of privilege.
答案:ABC
解析:
102.[多选题]V4 SGSN中，需要配置的逻辑接口包括（）。

On V4 SGSN, which logical interfaces need to be configured? ( )
A)Gy
B)Gi
C)Gn
D)Iu
答案:CD
解析:
103.[多选题]前台MP模块地址分配原则
A)前台模块内部 IP 服务端端口的计算：F0000 + 模块号
B)前台模块外部 IP 服务端端口的计算：F0000 + 模块号
C)前台模块外部 IP 服务端端口的计算：E0000 + 模块号
D)前台模块外部 IP 客户端端口的计算：E000 + 模块号
答案:ACD
解析:
104.[多选题]有关xGW GGSN的告警过滤规则说法正确的是？Which of the following statements are correct about alarm filtering rules of the xGW GGSN? ( )
A)只有本客户端不显示，但告警仍然入库Alarm filtering rules are not displayed on the
local client, but alarms are still saved to the database.
B)只有本客户端不显示，但告警不入库Alarm filtering rules are not displayed on the local client, but alarms are not saved to the database.
C)所有客户端均不显示，但告警仍然入库Alarm filtering rules are not displayed on any
client, but alarms are not saved to the database.
答案:ABD
解析:
105.[多选题]VCS双机需要配置哪些资源？The following resources should be configured in the VCS dual-computer: ( ).
A)IP
B)NIC
C)MOUNT
D)APPLICATION
答案:ABCD
解析:
106.[多选题]下列哪些概念只与Iu-PS接口有关，与Gb接口无关？（ ）
A)flex
B)RAB assignment
C)security mode command
D)IP
答案:BC
解析:
107.[多选题]PDP context即PDP上下文，保存PDP状态以及PDP相关信息，存在于（）中，PDP上下文是动态维护的。

A PDP context is the file that records the status of the PDP and related information. It is located in ( ) and it is maintained dynamically.
A)MS/UE
B)SGSN
C)HLR
D)GGSN
答案:ABD
解析:
108.[多选题]GGSN作为PCEF实体，要求具备的功能点有？（ ）
A)数据流检测
B)控制策略实施
C)流计费
D)事件上报
答案:BCD
解析:
109.[多选题]3GPP规范接口要求PCEF支持用户、业务的使用量监控及上报功能。

遵循3GPP R9协议中
service usage. According to traffic monitoring requirements as specified in the 3GPP R9 protocol, the PCEF monitors and reports the ( of users or services.
A)流量traffic
B)时长duration
C)事件event
D)内容content
答案:ABC
解析:
110.[多选题]xGW PDSN上A+A主备工作的单板有（）。

For the xGW PDSN, the following boards work in A+A master/slave mode: ( ).
A)MPU
B)GSU
C)PFU
D)SFU
答案:AB
解析:
111.[多选题]SGSN中本局移动数据中必须勾选支持的接口类型（）。

In local office mobile data on the SGSN, the following interface types must be selected: ( ).
A)Gb
B)Iu
C)Egbs
D)Gs
答案:ABC
解析:
112.[多选题]ZXUN xGW产品具备以下哪些特性？（ )
A)高集合度
B)支持多网关融合
C)绿色环保
D)易维护性
答案:ABCD
解析:
113.[多选题]VD-uMAC里，UOMM模块可以配置在（ ）槽位。

A)C
B)D
C)E
D)F
114.[多选题]在同一个PDSN内不同PCF间的切换流程包括（）The handoff flow between different PCFs inside the same PDSN include the following steps: ( ).
A)先建立目标BSC和PCF间的AHFirst establish an AH link between the target BSC and the PCF.
B)断开源BS和MS间的空中接口，再建立目标BS和MS间的空中接口Disconnect the air interface between the source BS and the MS, and then create an air interface between the target BS and the MS.
C)建立PDSN和目标PCF间的AA0，此时可在目标BS和PCF上传送分组数据Establish an AA0 link between the PDSN and the target PCF. In this way, packet data can be transferred between the target BS and the PCF.
D)释放源PCF和BS间的AH，PDSN和源PCF间的AA0Release the AH link between the source PCF and the BS, and release the AA0 link between the PDSN and the source PCF.
答案:ABCD
解析:
115.[多选题]V4 uMAC商用局开通时，需遵循以下哪些要求？
A)1) OMP固定位于1架3框9/10槽位，必须采用主备配置
B)2) OMP所在单板上还可以配置USMP模块（OMP单板上是否配置SMP模块由售前商务决定）；如果OMP单板类型为SBCJ，则还可以配置6个SMP模块；如果OMP单板类型为PPBC1，则还可以配置14个SMP模块
C)3) SMP必须为主备配置，SMP有两种物理类型：SBCJ、PPBC1。

对于每对SBCJ单板，必须创建8个USMP模块；对于每对PPBC1单板，必须创建16个USMP模块。

互为主备的一对单板的物理类型必须相同D)4) 对于多框级联，主框的5、6槽位固定为OMM的槽位。

从框的5、6槽位禁止插USUP单板，可以插SMP单板
答案:ABCD
解析:
116.[多选题]APN下的离线计费模式包括（）。

Offline charging modes of APN include ( ).
A)time
B)flow
C)time-flow
D)event
答案:ABC
解析:
117.[多选题]XB切换中，MME发给eNB的PATH SWITCH REQUEST ACKNOWLEDGE消息必须包含的参数有Which options are there must be in PATH SWITCH REQUEST ACKNOWLEDGE message for XB handover
A)GTP-TEID。