

MCQOPTIONS
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1. |
______was_developed_by_CCITT_to_provide_standard_connectionless_network_access_protocols_for_three_layers_of_OSI_model.$ |
A. | Packet switching |
B. | Datagram routing |
C. | X.25 |
D. | CDPD |
Answer» D. CDPD | |