單項選擇題Payload traffic is transported across the GPRS network encapsulated in()。

A.GTP
B.IPSec
C.GRE
D.HTTP


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2.單項選擇題The GPRS physical channels is called ()。

A.PDCH(Packet Date Channel)
B.PTCH(Packet Traffic Channel)
C.PHCH(Physical Channel)
D.GPCH(GPRS Physical Channel)

4.單項選擇題USF is sent in the()blocks。

A.uplink
B.downlink
C.both
D.none of above

5.單項選擇題In BSS, the relay function relays()between Um and Gb interfaces。

A.SNDCP PDU
B.GTP PDU
C.LLC PDU
D.PDP PDU