题目内容
(请给出正确答案)
[单选题]
If in a GSM/DCS network the periodic location update timer is set as 10 hours,then a pe
A.10 hours after the last periodic location update
B.10 hours after the last power on location update
C.10 hours after the last generic location update
D.10 hours after the last transaction of any kind with the NSS
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