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Computer Networks
Sonet
Q
A unidirectional path switching ring is a network with __________
AA. One ring
BB. Two rings
CC. Three rings
DD. Four rings
Correct Answer:
B. B. Two rings
Explanation:
One ring is used as the working ring and other as the protection ring in which each node is connected to its respective adjacent nodes by two fibers, one to transmit, and one to receive.