1.

ICI (Interface Control Information) is

A. used to transfer user data from layer to layer
B. used to exchange information by peer entities at different sites on the network to instruct an entity to perform a service function
C. a combination of service data unit (SDU) and protocol control information (PCI)
D. a temporary parameter passed between N and N - 1 layers to involve service functions between two layers
Answer» E.


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