更多"[多选题]在GGSN系统割接前，需要进行主备倒换测试，包括以下（）。
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[单选题]MPU主备倒换后，需要间隔（）分钟以上，才能再次进行倒换。
After switchover of master/slave MPU boards, we need to wait for ( ) minutes at least before switching them again.
A.5
B.10
C.15
D.20
[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
[单选题]调度通信系统数字板主备倒换试验每年（ ）次。
A.1
B.2
C.4
D.12
[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.
[多选题]微机联锁 EI32-JD、JD-1A操表机主备倒换方法
A.天窗修或登记要点，并与车站值班员联系，经同意后方可进行。
B.确认两套操表机为双机热备状态后再进行切换，在倒机单元上按下相应的“人工倒机”按钮（如A操表机主用、B操表机备用，则按下A→B按钮，如B操表机主用、A操表机备用，则按下B→A按钮。倒换后前台显示器有3-4秒黑屏时间。
C.倒换后确认鼠标、音箱工作正常。
[判断题]AAA的主备倒换功能，如果切换到备用AAA上了，当主用AAA状态恢复后，业务会自动倒回到之前主用的AAA上。
For the active/standby switchover function of the AAA, if services are switched to the slave AAA, services will automatically switch back when the master AAA is recovered.
A.正确
B.错误
[判断题]xGW（PDSN）入网前，必须进行测试用户话单分析。
Before cutover of the xGW(PDSN), we need to analyze CDRs of test users.
A.正确
B.错误
[单选题]xGW GGSN一般不需要对接的设备是（）。
xGW GGSN generally does not need to connect to ( ).
A.OCS
B.PCRF
C.SGSN
D.HLR
[多选题]GGSN与CG对接时，需要配置的项包括（）。
When the GGSN interconnects with the CG, which of the following items need to be configured?
A.配置CPU组的cgagent地址,每个CPU组都要配置各自的CG Agent地址
Configure cgagent addresses for CPU groups, and each CPU group has its own CG agent address.
B.将 cgagent地址 配置到环回接口地址中
Configure the cgaent address in the loopback interface address.
C.配置与CG通讯的接口地址及路由
Configure the interface IP and route to communicate with the CG.
D.配置CG服务器
Configure the CG server on the GGSN.
E.配置cg-profile,在cf-profile 中配置主备用CG服务器等
Configure cg-profile, and in cf-profile, configure master and slave CG servers.
F.将cg-profile 与apn 关联
Associate cg-profile with the APN.
[多选题]xGW GGSN采用多地址方式时，哪些组上需要配置IP地址？
When xGW GGSN adopts the multi-address mode, the following groups should configure IP addresses: ( ).
A.GSU Group
B.CU Group
C.SLB Group
D.xDPI Group
[单选题]xGW GGSN中，需要把手机地址池平均分配到（）上。
In xGW GGSN, addresses in the IP address pool of MS must be assigned to ( ) averagely.
A.GSU Group
B.CU Group
C.SLB Group
D.xDPI Group
[多选题]V4 GGSN中，需要配置的逻辑接口包括（）。
On V4 GGSN, which logical interfaces need to be configured? ( )
A.Gn
B.Gb
C.Gi
D.Gy
[多选题]在V4 GGSN中，需要配置下面哪些接口的loopback地址？（）
On V4 GGSN, the following interfaces should be configured with the loopback address: ( ).
A.GTPC
B.radius client
C.GTPU
D.cgagent
