[单项选择题] Old SGSN can get new SGSN’s IP address by communicating to () when a MS requests inter_SGSN RA update.
A.MS
B.GGSN
C.DNS
D.HLR
参考答案:
C问题解析:
解析无
[单项选择题] Old SGSN can get new SGSN’s IP address by communicating to () when a MS requests inter_SGSN RA update.
参考答案:
C问题解析:
解析无