What is the Generic Flow Control (GFC) header in an ATM NNI cell used for?
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A.
Rate control between the ATM NNI switches
B.
Rate control between UNI devices
C.
GFC has local significance, only, and the value encoded in the field is not end-to-end.
D.
None of the above
Explanation:
http://www.pulsewan.com/data101/atm_basics.htm