單項(xiàng)選擇題

What could a MS do when its state changes from idle to ready？（）

A.Power on
B.PDP context activation
C.GPRS attach
D.Transferring packets

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單項(xiàng)選擇題

When does a MS get IP address？（）

A.After MS finishes GPRS attach
B.After MS finishes PDP context activate procedure
C.After MS requests RA update
D.After MS finishes Cell update

單項(xiàng)選擇題

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