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Wireless Mobile Communications
Traffic Routing Wireless Networks
Q
__________ was developed by CCITT to provide standard connectionless network access protocols for three layers of OSI model.
AA. Packet switching
BB. Datagram routing
CC. X.25
DD. Cdpd
Correct Answer:
C. C. X.25
Explanation:
X.25 was developed by CCITT (now ITU-T) to provide standard connectionless network access (packet switching) protocols for the three layers (layer 1, 2 and 3) of the open systems interconnection (OSI) model.
