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Choose the best matching between Group 1 and Group 2. Group-1 Group-2 P. Data link 1. Ensures reliable transport of data over a physical point-to-point link Q. Network layer 2. Encoder/decodes data for physical transmission R. Transport layer 3. Allows end-to-end communication between two processes 4. Routes data from one network node to the next

A. P-1, Q-4, R-3
B. P-2, Q-4, R-1
C. P-2, Q-3, R-1
D. P-1, Q-3, R-2
Answer» B. P-2, Q-4, R-1


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