更多"[多选题]SGSN割接前的准备，下面说法正确的是（）。
About S"的相关试题:
[多选题]当SGSN割接DT业务时，下面说法正确的是（）。
When SGSN cutover the DT service, which statement is correct?
A.过滤无流量的DT话单，或者过滤所有话单，否则DT产生的巨量话单会占用很多CG磁盘空间。
Need to filter the DT CDR without traffic or filter all CDRs, otherwise huge amount of CDRs generated for DT will occupy the disk space.
B.RNC和GGSN Gn接口之间媒体面要互通，承载网要保证路由双向可达。
Need to make sure the media plane interconnection between RNC and GGSN is OK and the route of bear network should be available in both side.
C.SGSN和xGW GGSN开通DT，在开启APN扩展情况下需要配置ADD DT IP，将xGW GGSN所有SLB和GTP地址配置上。
When the SGSN and xGW GGSN use the DT function ,and the APN extension is also used, [ADD DT IP] should be configured and all the SLB and GTP IP address of xGW GGSN should be configured.
D.SGSN和RNC的媒体面路由要打通，确保媒体流能经过SGSN。
The route of media plane should be through between SGSN and RNC, and make sure the media stream can go through the SGSN.
[单选题]当SGSN割接DT业务时，下面说法不正确的是（）。
During cutover of DT services on the SGSN, which of the following statements is incorrect? ( )
A.过滤无流量的DT话单，或者过滤所有话单，否则DT产生的巨量话单会占用很多CG磁盘空间。
Filter DT CDRs with no traffic or filter all CDRs. Otherwise, a huge number of CDRs will be generated for the DT service, occupying great disk spaces on the CG.
B.RNC和GGSN Gn接口之间媒体面要互通，承载网要保证路由双向可达。
Make sure that the media plane between the RNC and the Gn interface of the GGSN is connected through, and routes on the bearer network are reachable in two directions.
C.SGSN和xGW GGSN开通DT，在开启APN扩展情况下需要配置ADD DT IP，将xGW GGSN所有SLB和GTP地址配置上。
To enable the DT service on the SGSN and the xGW GGSN, if APN extension has been enabled, we should run the command "ADD DT IP" to configure all SLB and GTP addresses of the xGW GGSN.
D.SGSN和RNC的媒体面路由要打通，确保媒体流能经过SGSN。
Make sure that routes of the media plane between the SGSN and the RNC are connected through, and the media stream can pass the SGSN.
[多选题]进行SGSN割接时，需要进行那些配置数据？
Before SGSN cutover, we need to make the following configurations: ( ).
A.GN DNS的配置，需要将现网所有的LAI/RAI配置到我们的DNS下。
GN DNS configuration, where we need to configure all LAIs/PRAIs in the existing network to ZTE DNS
B.Gn DNS的配置，只需要将同我们要割接的无线区域的相邻的切换区的LAI/RAI配置在我们的DNS下。
GN DNS configuration, where we need to configure all LAIs/PRAIs of adjacent handoff areas in the wireless area to be cut over to ZTE DNS
C.SGSN同无线对接的链路的配置。
Configuration of the link between the SGSN and the wireless part
D.APN纠错以及flex的配置。
Configuration of APN correction and flex function
[判断题]SGSN POOL 的Flex参数割接必须规划好，同时NRI和NRI长度无线RNC和SGSN必须保持一致。
The Flex parameter for SGSN pools should be well planned before cutover. In addition, the NRI and NRI length should be consistent between the RNC side and the SGSN side.
A.正确
B.错误
[多选题]xGW GGSN割接上线前，需要检查PDP最大空闲时间（idle-time）设置，下面说法正确的是（）。
Before xGW GGSN cutover, need to check the PDP idle-time configuration, which statements are correct?
A.固定设置成1000MIN。
Idle-time should fix to 1000 min.
B.如果新建xGW GGSN是为了替换我司V3 GGSN，则要求xGW的idle-time设置和V3 GGSN保持一致。
If the new GGSN is for replacing ZTE old V3 GGSN, then idle-time value should be same with old V3 GGSN.
C.如果不是替换我司V3 GGSN，则要求和局方现网设置保持一致。
If the new GGSN isn't for replacing ZTE old V3 GGSN, then idle-time value should be same with current network.
D.如果不是替换我司V3 GGSN，局方现网也没有任何GGSN设备，则可根据实际需要配置，推荐1440min。
If the new GGSN isn't for replacing ZTE old V3 GGSN and there is no any GGSN in the current network, then idle-time value should be configured according to the real requirement, and 1440min is for recommendation.
[单选题]当SGSN开启POOL功能时，下面哪些配置RNC和SGSN不能一致？
When the POOL function is enabled on the SGSN, the following configuration cannot be consistent between the RNC and the SGSN: ( ).
A.GTP地址
GTP IP address
B.NRI
C.路由区信息
route area information
D.NRI长度
NRI length
[多选题]当SGSN开启POOL功能时，需要下面哪些配置RNC和SGSN保持一致？
When SGSN adopts the POOL function, which configuration is consistent between SGSN and RNC?
A.GTP地址
GTP ip address
B.NRI
C.路由区信息
route area information.
D.NRI长度
NRI length.
[多选题]系统割接原则有下面哪几项
A.需要在XPON系统上承载的业务；核实XPON系统对该业务承载的可能性；需要在设备上进行的相关配置
B.回割接必须万无一失，保证用户业务顺利开通或者用户业务顺利地从原系统倒换到新系统上
C.对于割接工作中发生地意外中断事故，必须查清原因和责任人，严肃处理
D.割接必须做充分地准备和风险评估，必须提前制定退回方案
[多选题]下述关于uMAC SGSN SNTP说法正确的是（）。
Which of the following statements are correct about the uMAC SGSN SNTP? ( )
A.OMP与OMM进行时钟同步
The OMP synchronizes clock with the OMM.
B.独立单板ECMM与OMM同步
The independent board ECMM synchronizes clock with the OMM.
C.独立单板EGBS/EGFS与OMP同步
The independent board EGBS/EGFS synchronizes clock with the OMP.
D.OMM与NTP server同步
The OMM synchronizes clock with the NTP server.
[单选题]SGSN的下面哪些信息不需要通告给漫游合作伙伴？（）
The following information of the SGSN does not need to be notified to the roaming partner: ( ).
A.GT号码
GT number
B.MCC+MNC
C.GTPC地址
GTPC IP address
D.GTPU地址
GTPU IP address
[多选题]SGSN的下面哪些信息需要通告给漫游合作伙伴？（）
Which information should announce to roaming partner from SGSN?
A.GT号码
GT number
B.MCC+MNC
C.GTPC地址
GTPC ip address
D.GTPU地址
GTPU ip address.
[判断题]SGSN与HLR对接时, 如局向路由通, 但HLR未配置SGSN的SGSN MAP子系统号, 用户attach请求时GSN MAP将产生MAP ERROR错误。
A.正确
B.错误
[单选题]下面说法正确的是
A.随着系统波长间隔的缩小，系统需要提高波长稳定度来防止通道串绕
B.VMUX中各通道VOA调整范围是 0-5dB
C.LAC+GFF单板固有插损是2 dB
D.使用调制技术可以改善信噪比
[多选题]关于uMAC SGSN网管上删除OMP上的版本包，以下说法正确的是（）。
Which of the following statements are correct about deleting version packets stored in the OMP on the OMM server of the uMAC SGSN? ( )
A.删除命令是"DEL PKG"
To delete version packets, run the command "DEL PKG".
B.从硬盘和数据库表中同时删
除
Version packets are deleted from the hard disk and database tables at the same time.
C.一次可以删除多个版本包
You can delete several version packets at one time.
D.被删除的版本包必须处于未激活状态
The version packets to be deleted should be in inactivated status.
[单选题]下面说法正确是( )
A.SRv6 Policy头端与NCE-IP建立BGP SR Policy邻居,NCE-IP将SRv6 Policy下发给头端。
B.SRv6 Policy中使用静态配置的SRv6 SID。如果使用IS-IS IPv6动态分配的SRv6 SID,则IGP重启后SRv6 SID会重新分配,可能会发生变化。SRv6 Policy需要调整,维护不方便。
C.NCE-IP可以与头端或者网络中的其他设备建立BGP-LS邻居。该设备负责收集IS-IS IPv6拓扑,并通过BGP-LS发布到NCE-IP。
D.NCE-IP根据BGP-LS获取的IPv6拓扑计算路径,生成SRv6 Policy并下发到转发器
