單項選擇題The Uplink State Flag(USF) field is part of:（）

A.MAC header
B.TLLI
C.RLC header


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2.單項選擇題The SCTP layer in the C7 signalling protocol stack is responsible for which of the following:（）

A. Establishing a signaling channel between two signaling entities in an ATM network
B. Provide reliable connection for signaling between two IP signaling nodes
C. Provide routing for IP signaling messages in an IP signaling network

4.單項選擇題What would be the effect of reducing the parameter PILTIMER?（）

A. It will become easier to preempt PDCH:s for the CS domain
B. RPP CP Load will decrease
C. GSL device utilization will go down