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單項(xiàng)選擇題

How many families of MCS are defined for EGPRS?（）

A.1
B.2
C.3

單項(xiàng)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